/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 01:12:38,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 01:12:38,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 01:12:39,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 01:12:39,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 01:12:39,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 01:12:39,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 01:12:39,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-09 01:12:39,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 01:12:39,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 01:12:39,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 01:12:39,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 01:12:39,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 01:12:39,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 01:12:39,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 01:12:39,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 01:12:39,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 01:12:39,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 01:12:39,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 01:12:39,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 01:12:39,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 01:12:39,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 01:12:39,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 01:12:39,098 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 01:12:39,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 01:12:39,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 01:12:39,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 01:12:39,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 01:12:39,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 01:12:39,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-09 01:12:39,442 INFO L275 PluginConnector]: CDTParser initialized [2022-02-09 01:12:39,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-09 01:12:39,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2858939f2/afe0b391920740888f76d946101ddd6d/FLAGac103adaf [2022-02-09 01:12:39,820 INFO L306 CDTParser]: Found 1 translation units. [2022-02-09 01:12:39,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-09 01:12:39,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2858939f2/afe0b391920740888f76d946101ddd6d/FLAGac103adaf [2022-02-09 01:12:40,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2858939f2/afe0b391920740888f76d946101ddd6d [2022-02-09 01:12:40,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 01:12:40,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-09 01:12:40,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-09 01:12:40,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-09 01:12:40,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-09 01:12:40,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac79b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40, skipping insertion in model container [2022-02-09 01:12:40,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-09 01:12:40,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-09 01:12:40,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-09 01:12:40,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-09 01:12:40,474 INFO L203 MainTranslator]: Completed pre-run [2022-02-09 01:12:40,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-09 01:12:40,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-09 01:12:40,515 INFO L208 MainTranslator]: Completed translation [2022-02-09 01:12:40,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40 WrapperNode [2022-02-09 01:12:40,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-09 01:12:40,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 01:12:40,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 01:12:40,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 01:12:40,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,550 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-02-09 01:12:40,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 01:12:40,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 01:12:40,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 01:12:40,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 01:12:40,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 01:12:40,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 01:12:40,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 01:12:40,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 01:12:40,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (1/1) ... [2022-02-09 01:12:40,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 01:12:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:40,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 01:12:40,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 01:12:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-09 01:12:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 01:12:40,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 01:12:40,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 01:12:40,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-09 01:12:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-09 01:12:40,680 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 01:12:40,759 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 01:12:40,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 01:12:40,960 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 01:12:41,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 01:12:41,017 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-09 01:12:41,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:12:41 BoogieIcfgContainer [2022-02-09 01:12:41,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 01:12:41,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 01:12:41,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 01:12:41,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 01:12:41,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.02 01:12:40" (1/3) ... [2022-02-09 01:12:41,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3c661f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:12:41, skipping insertion in model container [2022-02-09 01:12:41,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:40" (2/3) ... [2022-02-09 01:12:41,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3c661f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:12:41, skipping insertion in model container [2022-02-09 01:12:41,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:12:41" (3/3) ... [2022-02-09 01:12:41,044 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-02-09 01:12:41,047 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 01:12:41,047 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 01:12:41,048 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 01:12:41,048 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 01:12:41,105 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,106 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,106 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,106 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,107 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,107 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,108 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,108 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,109 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,109 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,110 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,110 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,110 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,110 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,110 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,111 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,112 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,112 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,113 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,113 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,116 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,117 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,118 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:41,121 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-09 01:12:41,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 01:12:41,171 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 01:12:41,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 01:12:41,187 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 188 flow [2022-02-09 01:12:41,229 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-09 01:12:41,243 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:41,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:41,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 146847265, now seen corresponding path program 1 times [2022-02-09 01:12:41,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:41,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162285426] [2022-02-09 01:12:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:41,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:41,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:41,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162285426] [2022-02-09 01:12:41,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162285426] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:12:41,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:12:41,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 01:12:41,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108496422] [2022-02-09 01:12:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:12:41,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-09 01:12:41,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:41,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-09 01:12:41,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-09 01:12:41,449 INFO L87 Difference]: Start difference. First operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:41,508 INFO L93 Difference]: Finished difference Result 332 states and 782 transitions. [2022-02-09 01:12:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 01:12:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-09 01:12:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:41,522 INFO L225 Difference]: With dead ends: 332 [2022-02-09 01:12:41,522 INFO L226 Difference]: Without dead ends: 330 [2022-02-09 01:12:41,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-09 01:12:41,526 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:41,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:12:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-02-09 01:12:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-02-09 01:12:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.370820668693009) internal successors, (780), 329 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 780 transitions. [2022-02-09 01:12:41,592 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 780 transitions. Word has length 62 [2022-02-09 01:12:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:41,593 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 780 transitions. [2022-02-09 01:12:41,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,593 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 780 transitions. [2022-02-09 01:12:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-09 01:12:41,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:41,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:41,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 01:12:41,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -618423457, now seen corresponding path program 1 times [2022-02-09 01:12:41,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:41,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365132870] [2022-02-09 01:12:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:41,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:41,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:41,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365132870] [2022-02-09 01:12:41,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365132870] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:12:41,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:12:41,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-09 01:12:41,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279449629] [2022-02-09 01:12:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:12:41,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-09 01:12:41,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-09 01:12:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-09 01:12:41,831 INFO L87 Difference]: Start difference. First operand 330 states and 780 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:41,905 INFO L93 Difference]: Finished difference Result 408 states and 990 transitions. [2022-02-09 01:12:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-09 01:12:41,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-09 01:12:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:41,908 INFO L225 Difference]: With dead ends: 408 [2022-02-09 01:12:41,909 INFO L226 Difference]: Without dead ends: 408 [2022-02-09 01:12:41,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-09 01:12:41,910 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 102 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:41,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 138 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:12:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-02-09 01:12:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 369. [2022-02-09 01:12:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.404891304347826) internal successors, (885), 368 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 885 transitions. [2022-02-09 01:12:41,924 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 885 transitions. Word has length 62 [2022-02-09 01:12:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:41,924 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 885 transitions. [2022-02-09 01:12:41,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 885 transitions. [2022-02-09 01:12:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-09 01:12:41,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:41,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:41,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 01:12:41,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash -230953445, now seen corresponding path program 1 times [2022-02-09 01:12:41,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:41,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949497749] [2022-02-09 01:12:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:41,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:42,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:42,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949497749] [2022-02-09 01:12:42,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949497749] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:42,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189962904] [2022-02-09 01:12:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:42,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:42,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:42,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:42,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-09 01:12:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:42,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-09 01:12:42,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:42,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:42,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189962904] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:42,538 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:42,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-09 01:12:42,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018819463] [2022-02-09 01:12:42,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:42,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-09 01:12:42,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-09 01:12:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-09 01:12:42,545 INFO L87 Difference]: Start difference. First operand 369 states and 885 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:42,585 INFO L93 Difference]: Finished difference Result 514 states and 1250 transitions. [2022-02-09 01:12:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 01:12:42,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-02-09 01:12:42,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:42,588 INFO L225 Difference]: With dead ends: 514 [2022-02-09 01:12:42,588 INFO L226 Difference]: Without dead ends: 436 [2022-02-09 01:12:42,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-09 01:12:42,589 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 46 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:42,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 284 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:12:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-02-09 01:12:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 389. [2022-02-09 01:12:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 2.399484536082474) internal successors, (931), 388 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 931 transitions. [2022-02-09 01:12:42,602 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 931 transitions. Word has length 64 [2022-02-09 01:12:42,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:42,603 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 931 transitions. [2022-02-09 01:12:42,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 931 transitions. [2022-02-09 01:12:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:12:42,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:42,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:42,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-09 01:12:42,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:42,818 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:42,818 INFO L85 PathProgramCache]: Analyzing trace with hash 679645881, now seen corresponding path program 1 times [2022-02-09 01:12:42,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:42,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172087984] [2022-02-09 01:12:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:42,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:43,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:43,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172087984] [2022-02-09 01:12:43,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172087984] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:43,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752974681] [2022-02-09 01:12:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:43,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:43,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:43,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:43,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-09 01:12:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:43,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:12:43,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:43,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:44,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752974681] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:44,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:44,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:12:44,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614425872] [2022-02-09 01:12:44,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:44,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:12:44,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:44,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:12:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:12:44,093 INFO L87 Difference]: Start difference. First operand 389 states and 931 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:45,760 INFO L93 Difference]: Finished difference Result 1666 states and 4060 transitions. [2022-02-09 01:12:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-09 01:12:45,760 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:12:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:45,765 INFO L225 Difference]: With dead ends: 1666 [2022-02-09 01:12:45,765 INFO L226 Difference]: Without dead ends: 1216 [2022-02-09 01:12:45,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1743 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=998, Invalid=5008, Unknown=0, NotChecked=0, Total=6006 [2022-02-09 01:12:45,767 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 817 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:45,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3224 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:12:45,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-02-09 01:12:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 652. [2022-02-09 01:12:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 2.493087557603687) internal successors, (1623), 651 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1623 transitions. [2022-02-09 01:12:45,786 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1623 transitions. Word has length 69 [2022-02-09 01:12:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:45,787 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1623 transitions. [2022-02-09 01:12:45,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1623 transitions. [2022-02-09 01:12:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:12:45,788 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:45,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:45,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:45,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-09 01:12:45,992 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:45,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash 302508043, now seen corresponding path program 2 times [2022-02-09 01:12:45,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:45,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585064098] [2022-02-09 01:12:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:45,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:46,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:46,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585064098] [2022-02-09 01:12:46,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585064098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:46,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198956571] [2022-02-09 01:12:46,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:12:46,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:46,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:46,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:46,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-09 01:12:46,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:12:46,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:46,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:12:46,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:46,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:47,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198956571] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:47,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:47,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:12:47,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246464951] [2022-02-09 01:12:47,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:47,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:12:47,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:12:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:12:47,142 INFO L87 Difference]: Start difference. First operand 652 states and 1623 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:49,950 INFO L93 Difference]: Finished difference Result 2266 states and 5697 transitions. [2022-02-09 01:12:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-09 01:12:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:12:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:49,959 INFO L225 Difference]: With dead ends: 2266 [2022-02-09 01:12:49,959 INFO L226 Difference]: Without dead ends: 2113 [2022-02-09 01:12:49,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3336 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1749, Invalid=7953, Unknown=0, NotChecked=0, Total=9702 [2022-02-09 01:12:49,963 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1325 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:49,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 2773 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:12:49,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2022-02-09 01:12:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 812. [2022-02-09 01:12:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.6473489519112205) internal successors, (2147), 811 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2147 transitions. [2022-02-09 01:12:50,016 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2147 transitions. Word has length 69 [2022-02-09 01:12:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:50,017 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 2147 transitions. [2022-02-09 01:12:50,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2147 transitions. [2022-02-09 01:12:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:12:50,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:50,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:50,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:50,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:50,228 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -371365213, now seen corresponding path program 3 times [2022-02-09 01:12:50,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:50,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877573644] [2022-02-09 01:12:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:50,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:50,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:50,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877573644] [2022-02-09 01:12:50,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877573644] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:50,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504402269] [2022-02-09 01:12:50,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:12:50,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:50,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:50,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:50,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-09 01:12:50,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 01:12:50,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:50,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:12:50,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:50,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:51,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504402269] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:51,387 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:51,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:12:51,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347039980] [2022-02-09 01:12:51,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:51,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:12:51,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:12:51,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:12:51,389 INFO L87 Difference]: Start difference. First operand 812 states and 2147 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:55,067 INFO L93 Difference]: Finished difference Result 2427 states and 6104 transitions. [2022-02-09 01:12:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-09 01:12:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:12:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:55,075 INFO L225 Difference]: With dead ends: 2427 [2022-02-09 01:12:55,075 INFO L226 Difference]: Without dead ends: 2199 [2022-02-09 01:12:55,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4787 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2213, Invalid=11127, Unknown=0, NotChecked=0, Total=13340 [2022-02-09 01:12:55,078 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1482 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:55,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 3056 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:12:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2022-02-09 01:12:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 788. [2022-02-09 01:12:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.6137229987293518) internal successors, (2057), 787 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2057 transitions. [2022-02-09 01:12:55,101 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2057 transitions. Word has length 69 [2022-02-09 01:12:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:55,102 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 2057 transitions. [2022-02-09 01:12:55,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2057 transitions. [2022-02-09 01:12:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:12:55,103 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:55,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:55,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:55,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:55,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:55,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:55,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1442639007, now seen corresponding path program 4 times [2022-02-09 01:12:55,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:55,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307738546] [2022-02-09 01:12:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:55,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:55,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:55,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307738546] [2022-02-09 01:12:55,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307738546] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:55,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041678872] [2022-02-09 01:12:55,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:12:55,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:55,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:55,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:55,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-09 01:12:55,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:12:55,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:55,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:12:55,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:56,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:56,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041678872] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:56,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:56,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:12:56,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526147626] [2022-02-09 01:12:56,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:56,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:12:56,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:12:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:12:56,539 INFO L87 Difference]: Start difference. First operand 788 states and 2057 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:58,865 INFO L93 Difference]: Finished difference Result 1936 states and 4877 transitions. [2022-02-09 01:12:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-09 01:12:58,866 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:12:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:58,871 INFO L225 Difference]: With dead ends: 1936 [2022-02-09 01:12:58,871 INFO L226 Difference]: Without dead ends: 1714 [2022-02-09 01:12:58,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2938 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1368, Invalid=7752, Unknown=0, NotChecked=0, Total=9120 [2022-02-09 01:12:58,874 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 891 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:58,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 3277 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:12:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-02-09 01:12:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 788. [2022-02-09 01:12:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.5984752223634056) internal successors, (2045), 787 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2045 transitions. [2022-02-09 01:12:58,892 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2045 transitions. Word has length 69 [2022-02-09 01:12:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:58,892 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 2045 transitions. [2022-02-09 01:12:58,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2045 transitions. [2022-02-09 01:12:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:12:58,894 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:58,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:58,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:59,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:59,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -281754549, now seen corresponding path program 5 times [2022-02-09 01:12:59,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:59,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835463769] [2022-02-09 01:12:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:59,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:59,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:59,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835463769] [2022-02-09 01:12:59,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835463769] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:59,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640414220] [2022-02-09 01:12:59,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:12:59,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:59,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:59,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-09 01:12:59,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:12:59,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:59,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:12:59,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:59,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:00,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640414220] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:00,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:00,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:13:00,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177475756] [2022-02-09 01:13:00,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:00,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:13:00,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:13:00,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:00,280 INFO L87 Difference]: Start difference. First operand 788 states and 2045 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:02,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:02,545 INFO L93 Difference]: Finished difference Result 2147 states and 5583 transitions. [2022-02-09 01:13:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-09 01:13:02,545 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:02,553 INFO L225 Difference]: With dead ends: 2147 [2022-02-09 01:13:02,553 INFO L226 Difference]: Without dead ends: 2045 [2022-02-09 01:13:02,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2408 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1302, Invalid=6180, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 01:13:02,555 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 911 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:02,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2818 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-02-09 01:13:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 832. [2022-02-09 01:13:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 2.645006016847172) internal successors, (2198), 831 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2198 transitions. [2022-02-09 01:13:02,579 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 2198 transitions. Word has length 69 [2022-02-09 01:13:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:02,579 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 2198 transitions. [2022-02-09 01:13:02,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 2198 transitions. [2022-02-09 01:13:02,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:02,581 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:02,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:02,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:02,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:02,801 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash -955627805, now seen corresponding path program 6 times [2022-02-09 01:13:02,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:02,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558511054] [2022-02-09 01:13:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:02,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:03,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:03,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558511054] [2022-02-09 01:13:03,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558511054] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:03,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363876844] [2022-02-09 01:13:03,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:03,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:03,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:03,012 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:03,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-09 01:13:03,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 01:13:03,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:03,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:03,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:03,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:03,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363876844] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:03,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:03,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:13:03,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89367086] [2022-02-09 01:13:03,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:03,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:13:03,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:13:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:03,926 INFO L87 Difference]: Start difference. First operand 832 states and 2198 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:05,738 INFO L93 Difference]: Finished difference Result 1911 states and 4977 transitions. [2022-02-09 01:13:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-09 01:13:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:05,744 INFO L225 Difference]: With dead ends: 1911 [2022-02-09 01:13:05,744 INFO L226 Difference]: Without dead ends: 1794 [2022-02-09 01:13:05,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1169, Invalid=5311, Unknown=0, NotChecked=0, Total=6480 [2022-02-09 01:13:05,746 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 766 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:05,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2708 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-02-09 01:13:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 820. [2022-02-09 01:13:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.623931623931624) internal successors, (2149), 819 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2149 transitions. [2022-02-09 01:13:05,763 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2149 transitions. Word has length 69 [2022-02-09 01:13:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:05,763 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2149 transitions. [2022-02-09 01:13:05,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2149 transitions. [2022-02-09 01:13:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:05,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:05,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:05,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:05,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:05,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1554749941, now seen corresponding path program 7 times [2022-02-09 01:13:05,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:05,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431922190] [2022-02-09 01:13:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:05,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:06,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:06,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431922190] [2022-02-09 01:13:06,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431922190] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:06,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250540668] [2022-02-09 01:13:06,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:06,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:06,231 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:06,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-09 01:13:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:06,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:06,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:06,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:07,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250540668] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:07,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:07,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:13:07,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827841076] [2022-02-09 01:13:07,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:07,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:13:07,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:13:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:07,202 INFO L87 Difference]: Start difference. First operand 820 states and 2149 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:08,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:08,839 INFO L93 Difference]: Finished difference Result 1835 states and 4868 transitions. [2022-02-09 01:13:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-09 01:13:08,839 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:08,845 INFO L225 Difference]: With dead ends: 1835 [2022-02-09 01:13:08,845 INFO L226 Difference]: Without dead ends: 1784 [2022-02-09 01:13:08,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2022-02-09 01:13:08,847 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 511 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:08,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 2650 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-02-09 01:13:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 836. [2022-02-09 01:13:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 2.645508982035928) internal successors, (2209), 835 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2209 transitions. [2022-02-09 01:13:08,864 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2209 transitions. Word has length 69 [2022-02-09 01:13:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:08,865 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2209 transitions. [2022-02-09 01:13:08,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2209 transitions. [2022-02-09 01:13:08,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:08,866 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:08,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:08,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:09,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-09 01:13:09,079 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash 880876685, now seen corresponding path program 8 times [2022-02-09 01:13:09,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:09,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785924419] [2022-02-09 01:13:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:09,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:09,254 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:09,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785924419] [2022-02-09 01:13:09,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785924419] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:09,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879567286] [2022-02-09 01:13:09,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:09,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:09,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:09,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-09 01:13:09,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:09,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:09,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:09,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:09,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:10,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879567286] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:10,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:10,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:13:10,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865595342] [2022-02-09 01:13:10,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:10,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:13:10,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:13:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:10,092 INFO L87 Difference]: Start difference. First operand 836 states and 2209 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:11,440 INFO L93 Difference]: Finished difference Result 1685 states and 4489 transitions. [2022-02-09 01:13:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 01:13:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:11,446 INFO L225 Difference]: With dead ends: 1685 [2022-02-09 01:13:11,446 INFO L226 Difference]: Without dead ends: 1619 [2022-02-09 01:13:11,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=803, Invalid=3619, Unknown=0, NotChecked=0, Total=4422 [2022-02-09 01:13:11,449 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 556 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:11,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 2416 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:11,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2022-02-09 01:13:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 816. [2022-02-09 01:13:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 2.6233128834355828) internal successors, (2138), 815 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 2138 transitions. [2022-02-09 01:13:11,467 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 2138 transitions. Word has length 69 [2022-02-09 01:13:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:11,467 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 2138 transitions. [2022-02-09 01:13:11,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2138 transitions. [2022-02-09 01:13:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:11,469 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:11,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:11,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:11,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:11,699 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1872132149, now seen corresponding path program 9 times [2022-02-09 01:13:11,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:11,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790905865] [2022-02-09 01:13:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:11,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:11,885 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:11,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790905865] [2022-02-09 01:13:11,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790905865] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:11,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145937400] [2022-02-09 01:13:11,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:11,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:11,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:11,887 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:11,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-09 01:13:11,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:13:11,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:11,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:11,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:12,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:12,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145937400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:12,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:12,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:13:12,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121781668] [2022-02-09 01:13:12,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:12,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:13:12,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:12,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:13:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:12,839 INFO L87 Difference]: Start difference. First operand 816 states and 2138 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:14,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:14,887 INFO L93 Difference]: Finished difference Result 1947 states and 5148 transitions. [2022-02-09 01:13:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-09 01:13:14,888 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:14,894 INFO L225 Difference]: With dead ends: 1947 [2022-02-09 01:13:14,894 INFO L226 Difference]: Without dead ends: 1896 [2022-02-09 01:13:14,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1128, Invalid=4572, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 01:13:14,896 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 742 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:14,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1999 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-02-09 01:13:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 832. [2022-02-09 01:13:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 2.6498194945848375) internal successors, (2202), 831 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2202 transitions. [2022-02-09 01:13:14,913 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 2202 transitions. Word has length 69 [2022-02-09 01:13:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:14,914 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 2202 transitions. [2022-02-09 01:13:14,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 2202 transitions. [2022-02-09 01:13:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:14,915 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:14,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:14,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:15,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-09 01:13:15,123 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1198258893, now seen corresponding path program 10 times [2022-02-09 01:13:15,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:15,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71164548] [2022-02-09 01:13:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:15,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:15,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:15,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71164548] [2022-02-09 01:13:15,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71164548] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:15,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600092736] [2022-02-09 01:13:15,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:15,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:15,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:15,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:15,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-09 01:13:15,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:15,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:15,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:15,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:15,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:16,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600092736] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:16,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:16,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-09 01:13:16,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102276012] [2022-02-09 01:13:16,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:16,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:13:16,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:13:16,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:16,207 INFO L87 Difference]: Start difference. First operand 832 states and 2202 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:17,547 INFO L93 Difference]: Finished difference Result 1681 states and 4422 transitions. [2022-02-09 01:13:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-09 01:13:17,548 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:17,556 INFO L225 Difference]: With dead ends: 1681 [2022-02-09 01:13:17,556 INFO L226 Difference]: Without dead ends: 1615 [2022-02-09 01:13:17,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=798, Invalid=3108, Unknown=0, NotChecked=0, Total=3906 [2022-02-09 01:13:17,557 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 568 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:17,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2236 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:13:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2022-02-09 01:13:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 812. [2022-02-09 01:13:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.62268803945746) internal successors, (2127), 811 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2127 transitions. [2022-02-09 01:13:17,573 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2127 transitions. Word has length 69 [2022-02-09 01:13:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:17,573 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 2127 transitions. [2022-02-09 01:13:17,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2127 transitions. [2022-02-09 01:13:17,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:17,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:17,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:17,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-09 01:13:17,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-09 01:13:17,792 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash -908930907, now seen corresponding path program 11 times [2022-02-09 01:13:17,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:17,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612153797] [2022-02-09 01:13:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:17,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:17,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:17,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612153797] [2022-02-09 01:13:17,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612153797] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:17,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252072182] [2022-02-09 01:13:17,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:13:17,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:17,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:17,980 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:17,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-09 01:13:18,027 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:13:18,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:18,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:18,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:18,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:18,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252072182] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:18,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:18,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:13:18,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767083569] [2022-02-09 01:13:18,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:18,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:13:18,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:13:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:13:18,920 INFO L87 Difference]: Start difference. First operand 812 states and 2127 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:22,067 INFO L93 Difference]: Finished difference Result 2421 states and 6256 transitions. [2022-02-09 01:13:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-09 01:13:22,067 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:22,085 INFO L225 Difference]: With dead ends: 2421 [2022-02-09 01:13:22,085 INFO L226 Difference]: Without dead ends: 2268 [2022-02-09 01:13:22,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2646 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1514, Invalid=6858, Unknown=0, NotChecked=0, Total=8372 [2022-02-09 01:13:22,086 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 952 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:22,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 2536 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2022-02-09 01:13:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 948. [2022-02-09 01:13:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 947 states have (on average 2.7212249208025345) internal successors, (2577), 947 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2577 transitions. [2022-02-09 01:13:22,108 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2577 transitions. Word has length 69 [2022-02-09 01:13:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:22,108 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 2577 transitions. [2022-02-09 01:13:22,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2577 transitions. [2022-02-09 01:13:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:22,110 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:22,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:22,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:22,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-09 01:13:22,319 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1582804163, now seen corresponding path program 12 times [2022-02-09 01:13:22,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:22,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20602936] [2022-02-09 01:13:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:22,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:22,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:22,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20602936] [2022-02-09 01:13:22,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20602936] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:22,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665139300] [2022-02-09 01:13:22,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:22,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:22,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:22,503 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:22,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-09 01:13:22,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 01:13:22,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:22,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:22,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:23,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665139300] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:23,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:23,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:13:23,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198835380] [2022-02-09 01:13:23,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:23,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:13:23,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:13:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:13:23,419 INFO L87 Difference]: Start difference. First operand 948 states and 2577 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:25,645 INFO L93 Difference]: Finished difference Result 2140 states and 5563 transitions. [2022-02-09 01:13:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-09 01:13:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:25,650 INFO L225 Difference]: With dead ends: 2140 [2022-02-09 01:13:25,650 INFO L226 Difference]: Without dead ends: 1912 [2022-02-09 01:13:25,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1135, Invalid=4871, Unknown=0, NotChecked=0, Total=6006 [2022-02-09 01:13:25,652 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 906 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:25,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 2346 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-02-09 01:13:25,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 924. [2022-02-09 01:13:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 2.677139761646804) internal successors, (2471), 923 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2471 transitions. [2022-02-09 01:13:25,678 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2471 transitions. Word has length 69 [2022-02-09 01:13:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:25,678 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2471 transitions. [2022-02-09 01:13:25,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2471 transitions. [2022-02-09 01:13:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:25,681 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:25,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:25,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:25,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-09 01:13:25,893 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1345350197, now seen corresponding path program 13 times [2022-02-09 01:13:25,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:25,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369064934] [2022-02-09 01:13:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:25,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:26,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:26,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369064934] [2022-02-09 01:13:26,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369064934] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:26,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909757105] [2022-02-09 01:13:26,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:26,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:26,060 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:26,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-09 01:13:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:26,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:26,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:26,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:27,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909757105] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:27,026 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:27,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:13:27,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402376405] [2022-02-09 01:13:27,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:27,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:13:27,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:27,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:13:27,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:13:27,027 INFO L87 Difference]: Start difference. First operand 924 states and 2471 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:29,776 INFO L93 Difference]: Finished difference Result 2474 states and 6518 transitions. [2022-02-09 01:13:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-09 01:13:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:29,781 INFO L225 Difference]: With dead ends: 2474 [2022-02-09 01:13:29,781 INFO L226 Difference]: Without dead ends: 2372 [2022-02-09 01:13:29,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1835, Invalid=7477, Unknown=0, NotChecked=0, Total=9312 [2022-02-09 01:13:29,783 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 842 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:29,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 2719 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-02-09 01:13:29,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1048. [2022-02-09 01:13:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 2.7621776504297992) internal successors, (2892), 1047 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 2892 transitions. [2022-02-09 01:13:29,808 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 2892 transitions. Word has length 69 [2022-02-09 01:13:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:29,808 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 2892 transitions. [2022-02-09 01:13:29,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 2892 transitions. [2022-02-09 01:13:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:29,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:29,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:29,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:30,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:30,020 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2019223453, now seen corresponding path program 14 times [2022-02-09 01:13:30,021 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:30,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731365011] [2022-02-09 01:13:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:30,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:30,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:30,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731365011] [2022-02-09 01:13:30,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731365011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:30,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71259560] [2022-02-09 01:13:30,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:30,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:30,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:30,220 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:30,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-09 01:13:30,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:30,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:30,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:30,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:30,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:31,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71259560] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:31,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:31,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:13:31,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745788723] [2022-02-09 01:13:31,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:31,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:13:31,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:13:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:13:31,127 INFO L87 Difference]: Start difference. First operand 1048 states and 2892 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:34,143 INFO L93 Difference]: Finished difference Result 2541 states and 6662 transitions. [2022-02-09 01:13:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-09 01:13:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:34,153 INFO L225 Difference]: With dead ends: 2541 [2022-02-09 01:13:34,153 INFO L226 Difference]: Without dead ends: 2394 [2022-02-09 01:13:34,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1699, Invalid=7231, Unknown=0, NotChecked=0, Total=8930 [2022-02-09 01:13:34,154 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 826 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:34,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2873 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:13:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2022-02-09 01:13:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 1008. [2022-02-09 01:13:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 2.714995034756703) internal successors, (2734), 1007 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 2734 transitions. [2022-02-09 01:13:34,177 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 2734 transitions. Word has length 69 [2022-02-09 01:13:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:34,177 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 2734 transitions. [2022-02-09 01:13:34,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 2734 transitions. [2022-02-09 01:13:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:34,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:34,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:34,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:34,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-09 01:13:34,384 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:34,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash -205219233, now seen corresponding path program 15 times [2022-02-09 01:13:34,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:34,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704822676] [2022-02-09 01:13:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:34,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:34,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:34,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704822676] [2022-02-09 01:13:34,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704822676] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:34,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140986238] [2022-02-09 01:13:34,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:34,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:34,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:34,535 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:34,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-09 01:13:34,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 01:13:34,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:34,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:34,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:34,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:35,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140986238] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:35,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:35,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:13:35,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120041727] [2022-02-09 01:13:35,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:35,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:13:35,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:13:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:13:35,422 INFO L87 Difference]: Start difference. First operand 1008 states and 2734 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:37,186 INFO L93 Difference]: Finished difference Result 2277 states and 5902 transitions. [2022-02-09 01:13:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-09 01:13:37,186 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:37,196 INFO L225 Difference]: With dead ends: 2277 [2022-02-09 01:13:37,196 INFO L226 Difference]: Without dead ends: 2070 [2022-02-09 01:13:37,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=989, Invalid=5017, Unknown=0, NotChecked=0, Total=6006 [2022-02-09 01:13:37,197 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 619 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:37,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2771 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2022-02-09 01:13:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 968. [2022-02-09 01:13:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 2.672182006204757) internal successors, (2584), 967 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2584 transitions. [2022-02-09 01:13:37,218 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2584 transitions. Word has length 69 [2022-02-09 01:13:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:37,218 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 2584 transitions. [2022-02-09 01:13:37,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2584 transitions. [2022-02-09 01:13:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:37,220 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:37,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:37,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:37,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-09 01:13:37,435 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1138393483, now seen corresponding path program 16 times [2022-02-09 01:13:37,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:37,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536308827] [2022-02-09 01:13:37,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:37,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:37,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:37,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536308827] [2022-02-09 01:13:37,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536308827] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:37,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77073611] [2022-02-09 01:13:37,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:37,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:37,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:37,612 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:37,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-09 01:13:37,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:37,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:37,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:37,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:38,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:38,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77073611] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:38,435 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:38,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:13:38,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145887404] [2022-02-09 01:13:38,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:38,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:13:38,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:13:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:13:38,437 INFO L87 Difference]: Start difference. First operand 968 states and 2584 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:39,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:39,965 INFO L93 Difference]: Finished difference Result 1943 states and 5153 transitions. [2022-02-09 01:13:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 01:13:39,966 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:39,969 INFO L225 Difference]: With dead ends: 1943 [2022-02-09 01:13:39,970 INFO L226 Difference]: Without dead ends: 1892 [2022-02-09 01:13:39,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=777, Invalid=3645, Unknown=0, NotChecked=0, Total=4422 [2022-02-09 01:13:39,971 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 597 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:39,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 2252 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2022-02-09 01:13:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 984. [2022-02-09 01:13:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 2.6897253306205493) internal successors, (2644), 983 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 2644 transitions. [2022-02-09 01:13:39,992 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 2644 transitions. Word has length 69 [2022-02-09 01:13:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:39,992 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 2644 transitions. [2022-02-09 01:13:39,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 2644 transitions. [2022-02-09 01:13:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:39,994 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:39,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:40,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:40,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:40,208 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 464520227, now seen corresponding path program 17 times [2022-02-09 01:13:40,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:40,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117115809] [2022-02-09 01:13:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:40,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:40,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:40,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117115809] [2022-02-09 01:13:40,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117115809] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:40,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496009488] [2022-02-09 01:13:40,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:13:40,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:40,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:40,380 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:40,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-09 01:13:40,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:40,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:40,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:40,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:40,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:41,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496009488] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:41,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:41,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:13:41,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743079204] [2022-02-09 01:13:41,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:41,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:13:41,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:13:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:13:41,262 INFO L87 Difference]: Start difference. First operand 984 states and 2644 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:42,714 INFO L93 Difference]: Finished difference Result 1741 states and 4635 transitions. [2022-02-09 01:13:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 01:13:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:42,724 INFO L225 Difference]: With dead ends: 1741 [2022-02-09 01:13:42,724 INFO L226 Difference]: Without dead ends: 1675 [2022-02-09 01:13:42,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=771, Invalid=3519, Unknown=0, NotChecked=0, Total=4290 [2022-02-09 01:13:42,725 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 452 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:42,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 2397 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2022-02-09 01:13:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 972. [2022-02-09 01:13:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 2.6725025746652937) internal successors, (2595), 971 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2595 transitions. [2022-02-09 01:13:42,751 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2595 transitions. Word has length 69 [2022-02-09 01:13:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:42,751 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 2595 transitions. [2022-02-09 01:13:42,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2595 transitions. [2022-02-09 01:13:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:42,753 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:42,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:42,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:42,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:42,970 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:42,971 INFO L85 PathProgramCache]: Analyzing trace with hash -639518377, now seen corresponding path program 18 times [2022-02-09 01:13:42,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:42,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223990347] [2022-02-09 01:13:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:42,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:43,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:43,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223990347] [2022-02-09 01:13:43,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223990347] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:43,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426343905] [2022-02-09 01:13:43,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:43,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:43,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:43,146 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:43,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-09 01:13:43,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:13:43,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:43,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-09 01:13:43,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:43,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:44,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426343905] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:44,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:44,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 38 [2022-02-09 01:13:44,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997776024] [2022-02-09 01:13:44,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:44,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:13:44,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:44,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:13:44,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:13:44,642 INFO L87 Difference]: Start difference. First operand 972 states and 2595 transitions. Second operand has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:47,363 INFO L93 Difference]: Finished difference Result 2080 states and 5468 transitions. [2022-02-09 01:13:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-09 01:13:47,363 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:47,367 INFO L225 Difference]: With dead ends: 2080 [2022-02-09 01:13:47,367 INFO L226 Difference]: Without dead ends: 2029 [2022-02-09 01:13:47,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1406, Invalid=6076, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 01:13:47,368 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 915 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:47,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 2334 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-02-09 01:13:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1020. [2022-02-09 01:13:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 2.6957801766437686) internal successors, (2747), 1019 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2747 transitions. [2022-02-09 01:13:47,386 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2747 transitions. Word has length 69 [2022-02-09 01:13:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:47,386 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 2747 transitions. [2022-02-09 01:13:47,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2747 transitions. [2022-02-09 01:13:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:47,388 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:47,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:47,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:47,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:47,590 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:47,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:47,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1313391633, now seen corresponding path program 19 times [2022-02-09 01:13:47,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:47,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914061425] [2022-02-09 01:13:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:47,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:47,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:47,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914061425] [2022-02-09 01:13:47,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914061425] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:47,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942922901] [2022-02-09 01:13:47,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:47,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:47,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:47,783 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:47,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-09 01:13:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:47,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:47,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:48,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:48,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942922901] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:48,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:48,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:13:48,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550321011] [2022-02-09 01:13:48,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:48,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:13:48,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:13:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:13:48,668 INFO L87 Difference]: Start difference. First operand 1020 states and 2747 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:49,914 INFO L93 Difference]: Finished difference Result 1688 states and 4545 transitions. [2022-02-09 01:13:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-09 01:13:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:49,917 INFO L225 Difference]: With dead ends: 1688 [2022-02-09 01:13:49,917 INFO L226 Difference]: Without dead ends: 1622 [2022-02-09 01:13:49,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=666, Invalid=2640, Unknown=0, NotChecked=0, Total=3306 [2022-02-09 01:13:49,918 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 421 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:49,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2401 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-02-09 01:13:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1016. [2022-02-09 01:13:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 2.695566502463054) internal successors, (2736), 1015 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 2736 transitions. [2022-02-09 01:13:49,934 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 2736 transitions. Word has length 69 [2022-02-09 01:13:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 2736 transitions. [2022-02-09 01:13:49,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2736 transitions. [2022-02-09 01:13:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:49,936 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:49,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:49,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:50,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-02-09 01:13:50,136 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1916474139, now seen corresponding path program 20 times [2022-02-09 01:13:50,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:50,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466729324] [2022-02-09 01:13:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:50,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:50,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:50,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466729324] [2022-02-09 01:13:50,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466729324] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:50,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664649754] [2022-02-09 01:13:50,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:50,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:50,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:50,326 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:50,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-09 01:13:50,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:50,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:50,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:50,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:50,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:51,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664649754] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:51,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:51,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:13:51,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396261046] [2022-02-09 01:13:51,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:51,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:13:51,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:13:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:13:51,230 INFO L87 Difference]: Start difference. First operand 1016 states and 2736 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:54,067 INFO L93 Difference]: Finished difference Result 2804 states and 7312 transitions. [2022-02-09 01:13:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-09 01:13:54,067 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:54,071 INFO L225 Difference]: With dead ends: 2804 [2022-02-09 01:13:54,071 INFO L226 Difference]: Without dead ends: 2651 [2022-02-09 01:13:54,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2614 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1397, Invalid=6975, Unknown=0, NotChecked=0, Total=8372 [2022-02-09 01:13:54,072 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1072 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:54,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2487 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-02-09 01:13:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 1172. [2022-02-09 01:13:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.7711357813834328) internal successors, (3245), 1171 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3245 transitions. [2022-02-09 01:13:54,093 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3245 transitions. Word has length 69 [2022-02-09 01:13:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:54,093 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3245 transitions. [2022-02-09 01:13:54,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3245 transitions. [2022-02-09 01:13:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:54,095 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:54,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:54,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:54,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-09 01:13:54,295 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1704619901, now seen corresponding path program 21 times [2022-02-09 01:13:54,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:54,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482569011] [2022-02-09 01:13:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:54,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:54,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:54,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482569011] [2022-02-09 01:13:54,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482569011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:54,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112098728] [2022-02-09 01:13:54,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:54,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:54,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:54,486 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:54,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-09 01:13:54,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:13:54,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:54,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:54,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:54,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:55,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112098728] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:55,431 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:55,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:13:55,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702205086] [2022-02-09 01:13:55,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:55,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:13:55,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:55,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:13:55,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:13:55,432 INFO L87 Difference]: Start difference. First operand 1172 states and 3245 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:57,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:57,775 INFO L93 Difference]: Finished difference Result 2627 states and 6998 transitions. [2022-02-09 01:13:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-09 01:13:57,776 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:13:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:57,779 INFO L225 Difference]: With dead ends: 2627 [2022-02-09 01:13:57,779 INFO L226 Difference]: Without dead ends: 2348 [2022-02-09 01:13:57,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1200, Invalid=5442, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 01:13:57,781 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 893 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:57,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 2434 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-02-09 01:13:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 1328. [2022-02-09 01:13:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.8138658628485307) internal successors, (3734), 1327 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3734 transitions. [2022-02-09 01:13:57,801 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3734 transitions. Word has length 69 [2022-02-09 01:13:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:57,801 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 3734 transitions. [2022-02-09 01:13:57,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3734 transitions. [2022-02-09 01:13:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:13:57,803 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:57,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:57,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:58,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:58,008 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 331809321, now seen corresponding path program 22 times [2022-02-09 01:13:58,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:58,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910383520] [2022-02-09 01:13:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:58,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:58,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:58,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910383520] [2022-02-09 01:13:58,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910383520] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:58,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538806365] [2022-02-09 01:13:58,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:58,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:58,198 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:58,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-09 01:13:58,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:58,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:58,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:13:58,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:58,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:59,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538806365] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:59,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:59,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:13:59,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466746370] [2022-02-09 01:13:59,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:59,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:13:59,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:59,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:13:59,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:13:59,133 INFO L87 Difference]: Start difference. First operand 1328 states and 3734 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:01,596 INFO L93 Difference]: Finished difference Result 2743 states and 7353 transitions. [2022-02-09 01:14:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-09 01:14:01,598 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:01,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:01,602 INFO L225 Difference]: With dead ends: 2743 [2022-02-09 01:14:01,602 INFO L226 Difference]: Without dead ends: 2464 [2022-02-09 01:14:01,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1228, Invalid=5744, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 01:14:01,603 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 892 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:01,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 2462 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-02-09 01:14:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1232. [2022-02-09 01:14:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 2.7831031681559706) internal successors, (3426), 1231 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3426 transitions. [2022-02-09 01:14:01,626 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3426 transitions. Word has length 69 [2022-02-09 01:14:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:01,626 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 3426 transitions. [2022-02-09 01:14:01,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3426 transitions. [2022-02-09 01:14:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:01,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:01,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:01,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:01,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:01,828 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:01,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash 569263287, now seen corresponding path program 23 times [2022-02-09 01:14:01,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:01,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324952867] [2022-02-09 01:14:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:01,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:01,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:01,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324952867] [2022-02-09 01:14:01,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324952867] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:01,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140924162] [2022-02-09 01:14:01,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:14:01,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:01,980 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:01,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-09 01:14:02,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:14:02,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:02,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:02,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:02,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:02,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140924162] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:02,806 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:02,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:02,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850729372] [2022-02-09 01:14:02,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:02,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:02,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:02,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:02,807 INFO L87 Difference]: Start difference. First operand 1232 states and 3426 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:05,850 INFO L93 Difference]: Finished difference Result 3170 states and 8607 transitions. [2022-02-09 01:14:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-09 01:14:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:05,855 INFO L225 Difference]: With dead ends: 3170 [2022-02-09 01:14:05,855 INFO L226 Difference]: Without dead ends: 3068 [2022-02-09 01:14:05,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3394 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1831, Invalid=8069, Unknown=0, NotChecked=0, Total=9900 [2022-02-09 01:14:05,856 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 810 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:05,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 2702 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2022-02-09 01:14:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 1332. [2022-02-09 01:14:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1331 states have (on average 2.825694966190834) internal successors, (3761), 1331 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 3761 transitions. [2022-02-09 01:14:05,885 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 3761 transitions. Word has length 69 [2022-02-09 01:14:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:05,885 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 3761 transitions. [2022-02-09 01:14:05,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 3761 transitions. [2022-02-09 01:14:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:05,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:05,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:05,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-09 01:14:06,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-09 01:14:06,094 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:06,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -104609969, now seen corresponding path program 24 times [2022-02-09 01:14:06,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:06,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10427310] [2022-02-09 01:14:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:06,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:06,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:06,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10427310] [2022-02-09 01:14:06,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10427310] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:06,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566142240] [2022-02-09 01:14:06,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:14:06,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:06,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:06,263 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:06,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-09 01:14:06,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 01:14:06,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:06,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:06,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:06,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:07,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566142240] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:07,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:07,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:07,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80453554] [2022-02-09 01:14:07,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:07,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:07,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:07,069 INFO L87 Difference]: Start difference. First operand 1332 states and 3761 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:10,103 INFO L93 Difference]: Finished difference Result 2794 states and 7452 transitions. [2022-02-09 01:14:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-09 01:14:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:10,107 INFO L225 Difference]: With dead ends: 2794 [2022-02-09 01:14:10,107 INFO L226 Difference]: Without dead ends: 2623 [2022-02-09 01:14:10,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1769, Invalid=7737, Unknown=0, NotChecked=0, Total=9506 [2022-02-09 01:14:10,109 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 835 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:10,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 2902 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-02-09 01:14:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 1364. [2022-02-09 01:14:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 2.8239178283198827) internal successors, (3849), 1363 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 3849 transitions. [2022-02-09 01:14:10,133 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 3849 transitions. Word has length 69 [2022-02-09 01:14:10,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:10,133 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 3849 transitions. [2022-02-09 01:14:10,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 3849 transitions. [2022-02-09 01:14:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:10,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:10,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:10,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:10,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-09 01:14:10,336 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1709394251, now seen corresponding path program 25 times [2022-02-09 01:14:10,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:10,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833150935] [2022-02-09 01:14:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:10,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:10,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:10,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833150935] [2022-02-09 01:14:10,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833150935] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:10,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640234299] [2022-02-09 01:14:10,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:14:10,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:10,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:10,508 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:10,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-09 01:14:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:10,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:10,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:10,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:11,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640234299] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:11,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:11,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:11,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533502970] [2022-02-09 01:14:11,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:11,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:11,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:11,296 INFO L87 Difference]: Start difference. First operand 1364 states and 3849 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:12,949 INFO L93 Difference]: Finished difference Result 2436 states and 6507 transitions. [2022-02-09 01:14:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-09 01:14:12,949 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:12,953 INFO L225 Difference]: With dead ends: 2436 [2022-02-09 01:14:12,953 INFO L226 Difference]: Without dead ends: 2229 [2022-02-09 01:14:12,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=970, Invalid=4882, Unknown=0, NotChecked=0, Total=5852 [2022-02-09 01:14:12,954 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 526 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:12,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2594 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2022-02-09 01:14:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1284. [2022-02-09 01:14:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.7911145752143414) internal successors, (3581), 1283 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3581 transitions. [2022-02-09 01:14:12,978 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3581 transitions. Word has length 69 [2022-02-09 01:14:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:12,978 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 3581 transitions. [2022-02-09 01:14:12,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3581 transitions. [2022-02-09 01:14:12,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:12,980 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:12,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:12,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:13,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-09 01:14:13,185 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1915833585, now seen corresponding path program 26 times [2022-02-09 01:14:13,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:13,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380851932] [2022-02-09 01:14:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:13,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:13,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:13,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380851932] [2022-02-09 01:14:13,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380851932] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:13,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904230709] [2022-02-09 01:14:13,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:14:13,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:13,343 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:13,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-09 01:14:13,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:14:13,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:13,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:13,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:13,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:14,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904230709] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:14,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:14,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:14,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216689265] [2022-02-09 01:14:14,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:14,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:14,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:14,161 INFO L87 Difference]: Start difference. First operand 1284 states and 3581 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:17,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:17,279 INFO L93 Difference]: Finished difference Result 2984 states and 8166 transitions. [2022-02-09 01:14:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-09 01:14:17,280 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:17,284 INFO L225 Difference]: With dead ends: 2984 [2022-02-09 01:14:17,284 INFO L226 Difference]: Without dead ends: 2816 [2022-02-09 01:14:17,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1772, Invalid=9358, Unknown=0, NotChecked=0, Total=11130 [2022-02-09 01:14:17,286 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 570 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:17,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 3377 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:14:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2022-02-09 01:14:17,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1440. [2022-02-09 01:14:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 2.8339124391938846) internal successors, (4078), 1439 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4078 transitions. [2022-02-09 01:14:17,311 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4078 transitions. Word has length 69 [2022-02-09 01:14:17,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:17,311 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4078 transitions. [2022-02-09 01:14:17,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:17,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4078 transitions. [2022-02-09 01:14:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:17,313 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:17,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:17,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:17,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-09 01:14:17,533 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash 601221851, now seen corresponding path program 27 times [2022-02-09 01:14:17,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:17,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445659638] [2022-02-09 01:14:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:17,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:17,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:17,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445659638] [2022-02-09 01:14:17,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445659638] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:17,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659960511] [2022-02-09 01:14:17,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:14:17,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:17,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:17,712 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:17,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-09 01:14:17,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 01:14:17,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:17,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:17,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:18,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:18,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659960511] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:18,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:18,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:18,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985465966] [2022-02-09 01:14:18,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:18,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:18,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:18,564 INFO L87 Difference]: Start difference. First operand 1440 states and 4078 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:20,734 INFO L93 Difference]: Finished difference Result 2886 states and 8086 transitions. [2022-02-09 01:14:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-09 01:14:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:20,739 INFO L225 Difference]: With dead ends: 2886 [2022-02-09 01:14:20,739 INFO L226 Difference]: Without dead ends: 2706 [2022-02-09 01:14:20,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1027, Invalid=4979, Unknown=0, NotChecked=0, Total=6006 [2022-02-09 01:14:20,740 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 630 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:20,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2360 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-02-09 01:14:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1684. [2022-02-09 01:14:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 2.866904337492573) internal successors, (4825), 1683 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 4825 transitions. [2022-02-09 01:14:20,766 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 4825 transitions. Word has length 69 [2022-02-09 01:14:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:20,766 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 4825 transitions. [2022-02-09 01:14:20,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 4825 transitions. [2022-02-09 01:14:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:20,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:20,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:20,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-09 01:14:20,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:20,977 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:20,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:20,977 INFO L85 PathProgramCache]: Analyzing trace with hash 407050943, now seen corresponding path program 28 times [2022-02-09 01:14:20,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:20,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091261568] [2022-02-09 01:14:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:20,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:21,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:21,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091261568] [2022-02-09 01:14:21,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091261568] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:21,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719173649] [2022-02-09 01:14:21,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:14:21,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:21,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:21,131 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:21,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-09 01:14:21,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:14:21,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:21,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:21,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:21,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:22,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719173649] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:22,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:22,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:14:22,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738241167] [2022-02-09 01:14:22,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:22,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:22,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:22,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:22,009 INFO L87 Difference]: Start difference. First operand 1684 states and 4825 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:24,321 INFO L93 Difference]: Finished difference Result 3462 states and 9392 transitions. [2022-02-09 01:14:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-09 01:14:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:24,326 INFO L225 Difference]: With dead ends: 3462 [2022-02-09 01:14:24,326 INFO L226 Difference]: Without dead ends: 3258 [2022-02-09 01:14:24,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1217, Invalid=4945, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 01:14:24,327 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 787 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:24,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 2403 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2022-02-09 01:14:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 1800. [2022-02-09 01:14:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1799 states have (on average 2.886047804335742) internal successors, (5192), 1799 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 5192 transitions. [2022-02-09 01:14:24,364 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 5192 transitions. Word has length 69 [2022-02-09 01:14:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:24,364 INFO L470 AbstractCegarLoop]: Abstraction has 1800 states and 5192 transitions. [2022-02-09 01:14:24,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 5192 transitions. [2022-02-09 01:14:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:24,367 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:24,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:24,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:24,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:24,587 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -266822313, now seen corresponding path program 29 times [2022-02-09 01:14:24,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:24,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181879846] [2022-02-09 01:14:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:24,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:24,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:24,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181879846] [2022-02-09 01:14:24,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181879846] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:24,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210756809] [2022-02-09 01:14:24,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:14:24,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:24,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:24,739 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:24,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-09 01:14:24,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:14:24,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:24,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:24,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:25,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:25,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210756809] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:25,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:25,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:14:25,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944939791] [2022-02-09 01:14:25,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:25,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:25,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:25,629 INFO L87 Difference]: Start difference. First operand 1800 states and 5192 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:27,397 INFO L93 Difference]: Finished difference Result 3061 states and 8375 transitions. [2022-02-09 01:14:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-09 01:14:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:27,401 INFO L225 Difference]: With dead ends: 3061 [2022-02-09 01:14:27,401 INFO L226 Difference]: Without dead ends: 2833 [2022-02-09 01:14:27,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=851, Invalid=3571, Unknown=0, NotChecked=0, Total=4422 [2022-02-09 01:14:27,402 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 673 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:27,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 2413 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2022-02-09 01:14:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 1776. [2022-02-09 01:14:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1775 states have (on average 2.865352112676056) internal successors, (5086), 1775 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 5086 transitions. [2022-02-09 01:14:27,444 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 5086 transitions. Word has length 69 [2022-02-09 01:14:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:27,444 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 5086 transitions. [2022-02-09 01:14:27,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 5086 transitions. [2022-02-09 01:14:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:27,447 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:27,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:27,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:27,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-09 01:14:27,647 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1230124231, now seen corresponding path program 30 times [2022-02-09 01:14:27,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:27,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370622998] [2022-02-09 01:14:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:27,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:27,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:27,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370622998] [2022-02-09 01:14:27,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370622998] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:27,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253941682] [2022-02-09 01:14:27,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:14:27,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:27,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:27,826 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:27,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-09 01:14:27,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 01:14:27,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:27,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:27,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:28,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:28,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253941682] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:28,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:28,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:14:28,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206510346] [2022-02-09 01:14:28,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:28,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:28,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:28,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:28,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:28,702 INFO L87 Difference]: Start difference. First operand 1776 states and 5086 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:32,006 INFO L93 Difference]: Finished difference Result 3869 states and 10465 transitions. [2022-02-09 01:14:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-09 01:14:32,006 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:32,013 INFO L225 Difference]: With dead ends: 3869 [2022-02-09 01:14:32,013 INFO L226 Difference]: Without dead ends: 3665 [2022-02-09 01:14:32,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1510, Invalid=7046, Unknown=0, NotChecked=0, Total=8556 [2022-02-09 01:14:32,014 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 992 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:32,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2619 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:14:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2022-02-09 01:14:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 1996. [2022-02-09 01:14:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1995 states have (on average 2.8987468671679197) internal successors, (5783), 1995 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 5783 transitions. [2022-02-09 01:14:32,049 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 5783 transitions. Word has length 69 [2022-02-09 01:14:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:32,050 INFO L470 AbstractCegarLoop]: Abstraction has 1996 states and 5783 transitions. [2022-02-09 01:14:32,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 5783 transitions. [2022-02-09 01:14:32,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:32,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:32,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:32,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-09 01:14:32,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:32,258 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:32,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1903997487, now seen corresponding path program 31 times [2022-02-09 01:14:32,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:32,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588244994] [2022-02-09 01:14:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:32,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:32,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:32,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588244994] [2022-02-09 01:14:32,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588244994] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:32,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919099239] [2022-02-09 01:14:32,450 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:14:32,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:32,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:32,451 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:32,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-09 01:14:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:32,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:32,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:32,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:33,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919099239] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:33,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:33,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:14:33,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299431465] [2022-02-09 01:14:33,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:33,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:33,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:33,302 INFO L87 Difference]: Start difference. First operand 1996 states and 5783 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:35,252 INFO L93 Difference]: Finished difference Result 3808 states and 10574 transitions. [2022-02-09 01:14:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-09 01:14:35,252 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:35,258 INFO L225 Difference]: With dead ends: 3808 [2022-02-09 01:14:35,258 INFO L226 Difference]: Without dead ends: 3529 [2022-02-09 01:14:35,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1114, Invalid=4738, Unknown=0, NotChecked=0, Total=5852 [2022-02-09 01:14:35,258 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 932 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:35,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2422 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2022-02-09 01:14:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2140. [2022-02-09 01:14:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 2.929873772791024) internal successors, (6267), 2139 states have internal predecessors, (6267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 6267 transitions. [2022-02-09 01:14:35,286 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 6267 transitions. Word has length 69 [2022-02-09 01:14:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:35,286 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 6267 transitions. [2022-02-09 01:14:35,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 6267 transitions. [2022-02-09 01:14:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:35,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:35,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:35,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-09 01:14:35,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:35,491 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1018159229, now seen corresponding path program 32 times [2022-02-09 01:14:35,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:35,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317773722] [2022-02-09 01:14:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:35,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:35,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:35,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317773722] [2022-02-09 01:14:35,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317773722] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:35,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111599916] [2022-02-09 01:14:35,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:14:35,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:35,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:35,656 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:35,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-09 01:14:35,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:14:35,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:35,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:35,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:36,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:36,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111599916] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:36,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:36,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-09 01:14:36,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514097336] [2022-02-09 01:14:36,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:36,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:36,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:36,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:36,411 INFO L87 Difference]: Start difference. First operand 2140 states and 6267 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:38,546 INFO L93 Difference]: Finished difference Result 3721 states and 10301 transitions. [2022-02-09 01:14:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-09 01:14:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:38,552 INFO L225 Difference]: With dead ends: 3721 [2022-02-09 01:14:38,552 INFO L226 Difference]: Without dead ends: 3442 [2022-02-09 01:14:38,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1263, Invalid=5379, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 01:14:38,553 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 961 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:38,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 2459 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-02-09 01:14:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 1944. [2022-02-09 01:14:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 2.8903757076685537) internal successors, (5616), 1943 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 5616 transitions. [2022-02-09 01:14:38,580 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 5616 transitions. Word has length 69 [2022-02-09 01:14:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:38,580 INFO L470 AbstractCegarLoop]: Abstraction has 1944 states and 5616 transitions. [2022-02-09 01:14:38,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 5616 transitions. [2022-02-09 01:14:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:38,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:38,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:38,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-09 01:14:38,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-02-09 01:14:38,793 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:38,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1255613195, now seen corresponding path program 33 times [2022-02-09 01:14:38,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:38,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614271108] [2022-02-09 01:14:38,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:38,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:38,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:38,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614271108] [2022-02-09 01:14:38,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614271108] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:38,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918375758] [2022-02-09 01:14:38,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:14:38,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:38,950 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:38,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-09 01:14:39,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:14:39,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:39,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:39,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:39,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:39,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918375758] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:39,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:39,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:39,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016181015] [2022-02-09 01:14:39,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:39,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:39,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:39,721 INFO L87 Difference]: Start difference. First operand 1944 states and 5616 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:42,413 INFO L93 Difference]: Finished difference Result 3735 states and 10356 transitions. [2022-02-09 01:14:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-09 01:14:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:42,419 INFO L225 Difference]: With dead ends: 3735 [2022-02-09 01:14:42,419 INFO L226 Difference]: Without dead ends: 3633 [2022-02-09 01:14:42,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2984 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1683, Invalid=7247, Unknown=0, NotChecked=0, Total=8930 [2022-02-09 01:14:42,420 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 782 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:42,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 3057 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-02-09 01:14:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 2004. [2022-02-09 01:14:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 2003 states have (on average 2.9061407888167747) internal successors, (5821), 2003 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 5821 transitions. [2022-02-09 01:14:42,449 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 5821 transitions. Word has length 69 [2022-02-09 01:14:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:42,449 INFO L470 AbstractCegarLoop]: Abstraction has 2004 states and 5821 transitions. [2022-02-09 01:14:42,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 5821 transitions. [2022-02-09 01:14:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:42,452 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:42,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:42,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:42,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-09 01:14:42,655 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash 581739939, now seen corresponding path program 34 times [2022-02-09 01:14:42,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:42,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681308706] [2022-02-09 01:14:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:42,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:42,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:42,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681308706] [2022-02-09 01:14:42,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681308706] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:42,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756604080] [2022-02-09 01:14:42,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:14:42,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:42,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:42,801 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:42,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-09 01:14:42,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:14:42,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:42,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:42,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:43,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:43,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756604080] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:43,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:43,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:43,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954287866] [2022-02-09 01:14:43,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:43,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:43,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:43,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:43,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:43,573 INFO L87 Difference]: Start difference. First operand 2004 states and 5821 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:46,235 INFO L93 Difference]: Finished difference Result 3591 states and 9886 transitions. [2022-02-09 01:14:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-09 01:14:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:46,240 INFO L225 Difference]: With dead ends: 3591 [2022-02-09 01:14:46,240 INFO L226 Difference]: Without dead ends: 3420 [2022-02-09 01:14:46,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2816 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1668, Invalid=7074, Unknown=0, NotChecked=0, Total=8742 [2022-02-09 01:14:46,241 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1043 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:46,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 2374 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2022-02-09 01:14:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 2036. [2022-02-09 01:14:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2035 states have (on average 2.903685503685504) internal successors, (5909), 2035 states have internal predecessors, (5909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 5909 transitions. [2022-02-09 01:14:46,268 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 5909 transitions. Word has length 69 [2022-02-09 01:14:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:46,268 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 5909 transitions. [2022-02-09 01:14:46,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 5909 transitions. [2022-02-09 01:14:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:46,271 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:46,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:46,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:46,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-09 01:14:46,472 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1899223137, now seen corresponding path program 35 times [2022-02-09 01:14:46,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:46,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996933337] [2022-02-09 01:14:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:46,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:46,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:46,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996933337] [2022-02-09 01:14:46,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996933337] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:46,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953111857] [2022-02-09 01:14:46,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:14:46,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:46,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:46,612 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:46,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-09 01:14:46,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:14:46,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:46,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:46,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:46,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:47,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953111857] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:47,370 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:47,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:47,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970744041] [2022-02-09 01:14:47,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:47,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:47,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:47,371 INFO L87 Difference]: Start difference. First operand 2036 states and 5909 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:48,890 INFO L93 Difference]: Finished difference Result 3197 states and 8830 transitions. [2022-02-09 01:14:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-09 01:14:48,891 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:48,895 INFO L225 Difference]: With dead ends: 3197 [2022-02-09 01:14:48,895 INFO L226 Difference]: Without dead ends: 2990 [2022-02-09 01:14:48,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=931, Invalid=4769, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 01:14:48,896 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 644 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:48,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 2155 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:14:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2022-02-09 01:14:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1933. [2022-02-09 01:14:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 2.8840579710144927) internal successors, (5572), 1932 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 5572 transitions. [2022-02-09 01:14:48,921 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 5572 transitions. Word has length 69 [2022-02-09 01:14:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:48,921 INFO L470 AbstractCegarLoop]: Abstraction has 1933 states and 5572 transitions. [2022-02-09 01:14:48,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 5572 transitions. [2022-02-09 01:14:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:48,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:48,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:48,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:49,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:49,124 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash -555610421, now seen corresponding path program 36 times [2022-02-09 01:14:49,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:49,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720284626] [2022-02-09 01:14:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:49,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:49,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:49,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720284626] [2022-02-09 01:14:49,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720284626] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:49,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135558622] [2022-02-09 01:14:49,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:14:49,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:49,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:49,285 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:49,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-09 01:14:49,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:14:49,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:49,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:49,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:49,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:50,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135558622] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:50,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:50,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:50,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025979856] [2022-02-09 01:14:50,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:50,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:50,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:50,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:50,016 INFO L87 Difference]: Start difference. First operand 1933 states and 5572 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:52,998 INFO L93 Difference]: Finished difference Result 4414 states and 12245 transitions. [2022-02-09 01:14:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-09 01:14:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:53,005 INFO L225 Difference]: With dead ends: 4414 [2022-02-09 01:14:53,006 INFO L226 Difference]: Without dead ends: 4312 [2022-02-09 01:14:53,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1894, Invalid=9236, Unknown=0, NotChecked=0, Total=11130 [2022-02-09 01:14:53,007 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 857 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:53,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 2725 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:14:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-02-09 01:14:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 2005. [2022-02-09 01:14:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 2.8932135728542914) internal successors, (5798), 2004 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 5798 transitions. [2022-02-09 01:14:53,049 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 5798 transitions. Word has length 69 [2022-02-09 01:14:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:53,049 INFO L470 AbstractCegarLoop]: Abstraction has 2005 states and 5798 transitions. [2022-02-09 01:14:53,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 5798 transitions. [2022-02-09 01:14:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:53,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:53,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:53,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:53,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-09 01:14:53,279 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:53,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1229483677, now seen corresponding path program 37 times [2022-02-09 01:14:53,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:53,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954936481] [2022-02-09 01:14:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:53,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:53,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:53,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954936481] [2022-02-09 01:14:53,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954936481] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:53,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201214230] [2022-02-09 01:14:53,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:14:53,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:53,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:53,460 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:53,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-09 01:14:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:53,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:53,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:53,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:54,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201214230] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:54,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:54,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:54,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561283990] [2022-02-09 01:14:54,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:54,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:54,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:54,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:54,277 INFO L87 Difference]: Start difference. First operand 2005 states and 5798 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:56,742 INFO L93 Difference]: Finished difference Result 3849 states and 10811 transitions. [2022-02-09 01:14:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-09 01:14:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:14:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:56,748 INFO L225 Difference]: With dead ends: 3849 [2022-02-09 01:14:56,748 INFO L226 Difference]: Without dead ends: 3681 [2022-02-09 01:14:56,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1510, Invalid=7046, Unknown=0, NotChecked=0, Total=8556 [2022-02-09 01:14:56,749 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 675 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:56,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 2721 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2022-02-09 01:14:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2001. [2022-02-09 01:14:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 2.8855) internal successors, (5771), 2000 states have internal predecessors, (5771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 5771 transitions. [2022-02-09 01:14:56,778 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 5771 transitions. Word has length 69 [2022-02-09 01:14:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:56,778 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 5771 transitions. [2022-02-09 01:14:56,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 5771 transitions. [2022-02-09 01:14:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:14:56,781 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:56,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:56,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:56,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-09 01:14:56,991 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1961445015, now seen corresponding path program 38 times [2022-02-09 01:14:56,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:56,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178015067] [2022-02-09 01:14:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:56,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:57,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:57,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178015067] [2022-02-09 01:14:57,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178015067] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:57,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754888435] [2022-02-09 01:14:57,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:14:57,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:57,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:57,149 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:57,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-09 01:14:57,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:14:57,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:57,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:14:57,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:57,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:58,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754888435] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:58,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:58,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:14:58,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737779478] [2022-02-09 01:14:58,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:58,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:58,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:58,232 INFO L87 Difference]: Start difference. First operand 2001 states and 5771 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:02,695 INFO L93 Difference]: Finished difference Result 4952 states and 13817 transitions. [2022-02-09 01:15:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-09 01:15:02,695 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:15:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:02,718 INFO L225 Difference]: With dead ends: 4952 [2022-02-09 01:15:02,718 INFO L226 Difference]: Without dead ends: 4799 [2022-02-09 01:15:02,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4246 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2175, Invalid=10481, Unknown=0, NotChecked=0, Total=12656 [2022-02-09 01:15:02,722 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 876 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:02,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 3077 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:15:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-02-09 01:15:02,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 2409. [2022-02-09 01:15:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 2.933970099667774) internal successors, (7065), 2408 states have internal predecessors, (7065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 7065 transitions. [2022-02-09 01:15:02,767 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 7065 transitions. Word has length 69 [2022-02-09 01:15:02,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:02,767 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 7065 transitions. [2022-02-09 01:15:02,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 7065 transitions. [2022-02-09 01:15:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-09 01:15:02,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:02,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:02,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:02,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:02,979 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1287571759, now seen corresponding path program 39 times [2022-02-09 01:15:02,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:02,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859526758] [2022-02-09 01:15:02,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:02,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:03,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:03,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859526758] [2022-02-09 01:15:03,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859526758] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:03,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995063133] [2022-02-09 01:15:03,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:15:03,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:03,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:03,222 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:03,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-09 01:15:03,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 01:15:03,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:03,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 01:15:03,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:03,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:04,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995063133] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:04,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:04,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-09 01:15:04,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224988929] [2022-02-09 01:15:04,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:04,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:15:04,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:15:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:15:04,048 INFO L87 Difference]: Start difference. First operand 2409 states and 7065 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:06,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:06,419 INFO L93 Difference]: Finished difference Result 4385 states and 12544 transitions. [2022-02-09 01:15:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-09 01:15:06,419 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-09 01:15:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:06,427 INFO L225 Difference]: With dead ends: 4385 [2022-02-09 01:15:06,427 INFO L226 Difference]: Without dead ends: 4151 [2022-02-09 01:15:06,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1300, Invalid=5672, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 01:15:06,428 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 788 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:06,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 2504 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:15:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2022-02-09 01:15:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 2457. [2022-02-09 01:15:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2456 states have (on average 2.91571661237785) internal successors, (7161), 2456 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 7161 transitions. [2022-02-09 01:15:06,478 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 7161 transitions. Word has length 69 [2022-02-09 01:15:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:06,479 INFO L470 AbstractCegarLoop]: Abstraction has 2457 states and 7161 transitions. [2022-02-09 01:15:06,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 7161 transitions. [2022-02-09 01:15:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:06,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:06,483 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:06,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-09 01:15:06,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-09 01:15:06,683 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:06,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1319302325, now seen corresponding path program 40 times [2022-02-09 01:15:06,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:06,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234474220] [2022-02-09 01:15:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:06,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:06,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:06,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234474220] [2022-02-09 01:15:06,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234474220] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:06,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704351691] [2022-02-09 01:15:06,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:15:06,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:06,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:06,878 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:06,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-09 01:15:06,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:15:06,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:06,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:06,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:07,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:08,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704351691] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:08,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:08,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:08,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526709326] [2022-02-09 01:15:08,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:08,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:08,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:08,088 INFO L87 Difference]: Start difference. First operand 2457 states and 7161 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:12,089 INFO L93 Difference]: Finished difference Result 5078 states and 14210 transitions. [2022-02-09 01:15:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-09 01:15:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:12,097 INFO L225 Difference]: With dead ends: 5078 [2022-02-09 01:15:12,097 INFO L226 Difference]: Without dead ends: 4724 [2022-02-09 01:15:12,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5834 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1835, Invalid=16255, Unknown=0, NotChecked=0, Total=18090 [2022-02-09 01:15:12,098 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1692 mSDsluCounter, 4906 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 4830 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:12,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 4830 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:15:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2022-02-09 01:15:12,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 2756. [2022-02-09 01:15:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2755 states have (on average 2.9288566243194194) internal successors, (8069), 2755 states have internal predecessors, (8069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 8069 transitions. [2022-02-09 01:15:12,146 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 8069 transitions. Word has length 74 [2022-02-09 01:15:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:12,146 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 8069 transitions. [2022-02-09 01:15:12,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 8069 transitions. [2022-02-09 01:15:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:12,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:12,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:12,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-09 01:15:12,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:12,361 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1906029941, now seen corresponding path program 41 times [2022-02-09 01:15:12,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:12,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431116206] [2022-02-09 01:15:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:12,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:12,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:12,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431116206] [2022-02-09 01:15:12,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431116206] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:12,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429981853] [2022-02-09 01:15:12,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:15:12,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:12,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:12,593 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:12,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-09 01:15:12,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:15:12,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:12,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:12,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:13,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:13,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429981853] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:13,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:13,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:13,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966242476] [2022-02-09 01:15:13,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:13,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:13,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:13,804 INFO L87 Difference]: Start difference. First operand 2756 states and 8069 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:17,786 INFO L93 Difference]: Finished difference Result 5564 states and 15546 transitions. [2022-02-09 01:15:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-09 01:15:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:17,795 INFO L225 Difference]: With dead ends: 5564 [2022-02-09 01:15:17,795 INFO L226 Difference]: Without dead ends: 5462 [2022-02-09 01:15:17,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4981 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1621, Invalid=14129, Unknown=0, NotChecked=0, Total=15750 [2022-02-09 01:15:17,796 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1330 mSDsluCounter, 5527 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:17,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 5426 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:15:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2022-02-09 01:15:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 2856. [2022-02-09 01:15:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2855 states have (on average 2.9408056042031525) internal successors, (8396), 2855 states have internal predecessors, (8396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 8396 transitions. [2022-02-09 01:15:17,847 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 8396 transitions. Word has length 74 [2022-02-09 01:15:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:17,847 INFO L470 AbstractCegarLoop]: Abstraction has 2856 states and 8396 transitions. [2022-02-09 01:15:17,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 8396 transitions. [2022-02-09 01:15:17,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:17,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:17,852 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:17,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:18,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:18,052 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1715064099, now seen corresponding path program 42 times [2022-02-09 01:15:18,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:18,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283081234] [2022-02-09 01:15:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:18,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:18,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:18,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283081234] [2022-02-09 01:15:18,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283081234] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:18,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195780500] [2022-02-09 01:15:18,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:15:18,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:18,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:18,256 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:18,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-09 01:15:18,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:15:18,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:18,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:18,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:18,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:19,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195780500] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:19,539 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:19,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:19,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577511901] [2022-02-09 01:15:19,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:19,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:19,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:19,540 INFO L87 Difference]: Start difference. First operand 2856 states and 8396 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:24,028 INFO L93 Difference]: Finished difference Result 5008 states and 14002 transitions. [2022-02-09 01:15:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-09 01:15:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:24,035 INFO L225 Difference]: With dead ends: 5008 [2022-02-09 01:15:24,035 INFO L226 Difference]: Without dead ends: 4840 [2022-02-09 01:15:24,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5624 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1764, Invalid=15528, Unknown=0, NotChecked=0, Total=17292 [2022-02-09 01:15:24,037 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1628 mSDsluCounter, 4718 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:24,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 4687 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:15:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2022-02-09 01:15:24,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 2824. [2022-02-09 01:15:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2823 states have (on average 2.933049946865037) internal successors, (8280), 2823 states have internal predecessors, (8280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 8280 transitions. [2022-02-09 01:15:24,101 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 8280 transitions. Word has length 74 [2022-02-09 01:15:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:24,101 INFO L470 AbstractCegarLoop]: Abstraction has 2824 states and 8280 transitions. [2022-02-09 01:15:24,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 8280 transitions. [2022-02-09 01:15:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:24,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:24,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:24,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-09 01:15:24,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-09 01:15:24,306 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:24,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:24,307 INFO L85 PathProgramCache]: Analyzing trace with hash -69525451, now seen corresponding path program 43 times [2022-02-09 01:15:24,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:24,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305432125] [2022-02-09 01:15:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:24,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:24,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:24,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305432125] [2022-02-09 01:15:24,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305432125] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:24,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017706754] [2022-02-09 01:15:24,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:15:24,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:24,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:24,545 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:24,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-09 01:15:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:24,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:25,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:25,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017706754] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:25,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:25,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:25,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845071065] [2022-02-09 01:15:25,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:25,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:25,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:25,749 INFO L87 Difference]: Start difference. First operand 2824 states and 8280 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:30,276 INFO L93 Difference]: Finished difference Result 5999 states and 16712 transitions. [2022-02-09 01:15:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-09 01:15:30,277 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:30,285 INFO L225 Difference]: With dead ends: 5999 [2022-02-09 01:15:30,285 INFO L226 Difference]: Without dead ends: 5846 [2022-02-09 01:15:30,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6406 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2075, Invalid=17107, Unknown=0, NotChecked=0, Total=19182 [2022-02-09 01:15:30,287 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1390 mSDsluCounter, 5984 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 5899 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:30,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 5899 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:15:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2022-02-09 01:15:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 2972. [2022-02-09 01:15:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2971 states have (on average 2.9481656008078088) internal successors, (8759), 2971 states have internal predecessors, (8759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 8759 transitions. [2022-02-09 01:15:30,369 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 8759 transitions. Word has length 74 [2022-02-09 01:15:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:30,369 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 8759 transitions. [2022-02-09 01:15:30,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 8759 transitions. [2022-02-09 01:15:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:30,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:30,373 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:30,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:30,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-09 01:15:30,574 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash -743398707, now seen corresponding path program 44 times [2022-02-09 01:15:30,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:30,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940754726] [2022-02-09 01:15:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:30,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:30,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:30,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940754726] [2022-02-09 01:15:30,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940754726] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:30,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485682360] [2022-02-09 01:15:30,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:15:30,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:30,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:30,797 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:30,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-09 01:15:30,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:15:30,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:30,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:30,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:31,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:31,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485682360] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:31,965 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:31,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:31,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837509351] [2022-02-09 01:15:31,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:31,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:31,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:31,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:31,966 INFO L87 Difference]: Start difference. First operand 2972 states and 8759 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:36,886 INFO L93 Difference]: Finished difference Result 5333 states and 14931 transitions. [2022-02-09 01:15:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-09 01:15:36,886 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:36,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:36,894 INFO L225 Difference]: With dead ends: 5333 [2022-02-09 01:15:36,894 INFO L226 Difference]: Without dead ends: 5099 [2022-02-09 01:15:36,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7757 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2381, Invalid=19969, Unknown=0, NotChecked=0, Total=22350 [2022-02-09 01:15:36,896 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1463 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 5130 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:36,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 5130 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:15:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2022-02-09 01:15:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 2852. [2022-02-09 01:15:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 2.9354612416695898) internal successors, (8369), 2851 states have internal predecessors, (8369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 8369 transitions. [2022-02-09 01:15:36,962 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 8369 transitions. Word has length 74 [2022-02-09 01:15:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:36,962 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 8369 transitions. [2022-02-09 01:15:36,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 8369 transitions. [2022-02-09 01:15:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:36,967 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:36,967 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:36,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:37,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-09 01:15:37,167 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1084664455, now seen corresponding path program 45 times [2022-02-09 01:15:37,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:37,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975682738] [2022-02-09 01:15:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:37,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:37,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:37,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975682738] [2022-02-09 01:15:37,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975682738] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:37,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311964401] [2022-02-09 01:15:37,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:15:37,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:37,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:37,394 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:37,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-09 01:15:37,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:15:37,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:37,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:37,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:37,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:38,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311964401] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:38,492 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:38,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:38,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117473537] [2022-02-09 01:15:38,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:38,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:38,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:38,493 INFO L87 Difference]: Start difference. First operand 2852 states and 8369 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:40,452 INFO L93 Difference]: Finished difference Result 4260 states and 12093 transitions. [2022-02-09 01:15:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-09 01:15:40,452 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:40,459 INFO L225 Difference]: With dead ends: 4260 [2022-02-09 01:15:40,459 INFO L226 Difference]: Without dead ends: 4158 [2022-02-09 01:15:40,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=873, Invalid=6609, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 01:15:40,460 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 894 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:40,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 3754 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:15:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-02-09 01:15:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3034. [2022-02-09 01:15:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 2.945268710847346) internal successors, (8933), 3033 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 8933 transitions. [2022-02-09 01:15:40,513 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 8933 transitions. Word has length 74 [2022-02-09 01:15:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:40,513 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 8933 transitions. [2022-02-09 01:15:40,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 8933 transitions. [2022-02-09 01:15:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:40,517 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:40,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:40,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-09 01:15:40,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:40,718 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash 440163693, now seen corresponding path program 46 times [2022-02-09 01:15:40,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:40,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511754958] [2022-02-09 01:15:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:40,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:40,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:40,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511754958] [2022-02-09 01:15:40,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511754958] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:40,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810902417] [2022-02-09 01:15:40,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:15:40,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:40,948 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:40,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-09 01:15:41,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:15:41,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:41,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:41,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:41,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:42,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810902417] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:42,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:42,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:42,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042053352] [2022-02-09 01:15:42,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:42,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:42,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1414, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:42,070 INFO L87 Difference]: Start difference. First operand 3034 states and 8933 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:47,945 INFO L93 Difference]: Finished difference Result 6528 states and 17989 transitions. [2022-02-09 01:15:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-09 01:15:47,945 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:47,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:47,955 INFO L225 Difference]: With dead ends: 6528 [2022-02-09 01:15:47,956 INFO L226 Difference]: Without dead ends: 6324 [2022-02-09 01:15:47,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10052 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3586, Invalid=24806, Unknown=0, NotChecked=0, Total=28392 [2022-02-09 01:15:47,957 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1922 mSDsluCounter, 5963 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:47,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 5937 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:15:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2022-02-09 01:15:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 3174. [2022-02-09 01:15:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 2.970690198550268) internal successors, (9426), 3173 states have internal predecessors, (9426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 9426 transitions. [2022-02-09 01:15:48,027 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 9426 transitions. Word has length 74 [2022-02-09 01:15:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:48,027 INFO L470 AbstractCegarLoop]: Abstraction has 3174 states and 9426 transitions. [2022-02-09 01:15:48,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 9426 transitions. [2022-02-09 01:15:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:48,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:48,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:48,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:48,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-09 01:15:48,240 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash -233709563, now seen corresponding path program 47 times [2022-02-09 01:15:48,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:48,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768796111] [2022-02-09 01:15:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:48,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:48,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:48,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768796111] [2022-02-09 01:15:48,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768796111] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:48,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508596939] [2022-02-09 01:15:48,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:15:48,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:48,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:48,461 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:48,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-09 01:15:48,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:15:48,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:48,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:48,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:49,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:49,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508596939] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:49,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:49,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:49,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049983573] [2022-02-09 01:15:49,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:49,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:49,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:49,552 INFO L87 Difference]: Start difference. First operand 3174 states and 9426 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:53,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:53,658 INFO L93 Difference]: Finished difference Result 5542 states and 15554 transitions. [2022-02-09 01:15:53,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-09 01:15:53,658 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:15:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:53,666 INFO L225 Difference]: With dead ends: 5542 [2022-02-09 01:15:53,666 INFO L226 Difference]: Without dead ends: 5182 [2022-02-09 01:15:53,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6118 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2686, Invalid=15674, Unknown=0, NotChecked=0, Total=18360 [2022-02-09 01:15:53,668 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1553 mSDsluCounter, 4386 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:53,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 4333 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:15:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2022-02-09 01:15:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 3145. [2022-02-09 01:15:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3144 states have (on average 2.9580152671755724) internal successors, (9300), 3144 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 9300 transitions. [2022-02-09 01:15:53,721 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 9300 transitions. Word has length 74 [2022-02-09 01:15:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:53,721 INFO L470 AbstractCegarLoop]: Abstraction has 3145 states and 9300 transitions. [2022-02-09 01:15:53,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:53,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 9300 transitions. [2022-02-09 01:15:53,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:15:53,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:53,726 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:53,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-09 01:15:53,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-09 01:15:53,933 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash 126938247, now seen corresponding path program 48 times [2022-02-09 01:15:53,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:53,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101278975] [2022-02-09 01:15:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:53,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:54,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:54,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101278975] [2022-02-09 01:15:54,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101278975] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:54,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392536512] [2022-02-09 01:15:54,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:15:54,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:54,180 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:54,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-09 01:15:54,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:15:54,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:54,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:15:54,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:54,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:55,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392536512] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:55,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:55,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:15:55,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187951292] [2022-02-09 01:15:55,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:55,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:15:55,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:15:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:15:55,338 INFO L87 Difference]: Start difference. First operand 3145 states and 9300 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:00,895 INFO L93 Difference]: Finished difference Result 6751 states and 18929 transitions. [2022-02-09 01:16:00,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-09 01:16:00,895 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:00,906 INFO L225 Difference]: With dead ends: 6751 [2022-02-09 01:16:00,906 INFO L226 Difference]: Without dead ends: 6598 [2022-02-09 01:16:00,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7798 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2198, Invalid=20452, Unknown=0, NotChecked=0, Total=22650 [2022-02-09 01:16:00,907 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1423 mSDsluCounter, 6159 mSDsCounter, 0 mSdLazyCounter, 3365 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 6129 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:00,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 6129 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 3365 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:16:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2022-02-09 01:16:00,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 3321. [2022-02-09 01:16:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 2.9819277108433737) internal successors, (9900), 3320 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 9900 transitions. [2022-02-09 01:16:00,969 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 9900 transitions. Word has length 74 [2022-02-09 01:16:00,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:00,969 INFO L470 AbstractCegarLoop]: Abstraction has 3321 states and 9900 transitions. [2022-02-09 01:16:00,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 9900 transitions. [2022-02-09 01:16:00,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:00,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:00,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:00,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:01,174 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash -546935009, now seen corresponding path program 49 times [2022-02-09 01:16:01,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:01,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421034562] [2022-02-09 01:16:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:01,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:01,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:01,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421034562] [2022-02-09 01:16:01,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421034562] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:01,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516238742] [2022-02-09 01:16:01,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:16:01,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:01,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:01,370 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:01,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-09 01:16:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:01,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:01,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:01,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:02,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516238742] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:02,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:02,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:02,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903224920] [2022-02-09 01:16:02,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:02,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:02,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1450, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:02,537 INFO L87 Difference]: Start difference. First operand 3321 states and 9900 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:07,833 INFO L93 Difference]: Finished difference Result 5917 states and 16625 transitions. [2022-02-09 01:16:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-09 01:16:07,834 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:07,842 INFO L225 Difference]: With dead ends: 5917 [2022-02-09 01:16:07,842 INFO L226 Difference]: Without dead ends: 5674 [2022-02-09 01:16:07,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8089 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2207, Invalid=21049, Unknown=0, NotChecked=0, Total=23256 [2022-02-09 01:16:07,843 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1267 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 6029 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:07,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 6029 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:16:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2022-02-09 01:16:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 3289. [2022-02-09 01:16:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3289 states, 3288 states have (on average 2.9695863746958637) internal successors, (9764), 3288 states have internal predecessors, (9764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3289 states to 3289 states and 9764 transitions. [2022-02-09 01:16:07,898 INFO L78 Accepts]: Start accepts. Automaton has 3289 states and 9764 transitions. Word has length 74 [2022-02-09 01:16:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:07,898 INFO L470 AbstractCegarLoop]: Abstraction has 3289 states and 9764 transitions. [2022-02-09 01:16:07,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3289 states and 9764 transitions. [2022-02-09 01:16:07,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:07,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:07,903 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:07,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:08,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-02-09 01:16:08,104 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1507884503, now seen corresponding path program 50 times [2022-02-09 01:16:08,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:08,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193078185] [2022-02-09 01:16:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:08,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:08,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:08,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193078185] [2022-02-09 01:16:08,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193078185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:08,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103653774] [2022-02-09 01:16:08,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:16:08,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:08,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:08,333 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:08,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-09 01:16:08,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:16:08,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:08,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:08,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:08,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:09,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103653774] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:09,458 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:09,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:09,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808380177] [2022-02-09 01:16:09,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:09,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:09,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:09,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:09,459 INFO L87 Difference]: Start difference. First operand 3289 states and 9764 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:13,768 INFO L93 Difference]: Finished difference Result 6358 states and 17923 transitions. [2022-02-09 01:16:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-09 01:16:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:13,778 INFO L225 Difference]: With dead ends: 6358 [2022-02-09 01:16:13,778 INFO L226 Difference]: Without dead ends: 6205 [2022-02-09 01:16:13,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5959 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1786, Invalid=16304, Unknown=0, NotChecked=0, Total=18090 [2022-02-09 01:16:13,780 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 1301 mSDsluCounter, 5205 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 5183 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:13,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1301 Valid, 5183 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:16:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2022-02-09 01:16:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 3349. [2022-02-09 01:16:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 2.9811827956989245) internal successors, (9981), 3348 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 9981 transitions. [2022-02-09 01:16:13,840 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 9981 transitions. Word has length 74 [2022-02-09 01:16:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:13,840 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 9981 transitions. [2022-02-09 01:16:13,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 9981 transitions. [2022-02-09 01:16:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:13,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:13,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:13,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:14,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:14,045 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2113209537, now seen corresponding path program 51 times [2022-02-09 01:16:14,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:14,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831613558] [2022-02-09 01:16:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:14,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:14,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:14,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831613558] [2022-02-09 01:16:14,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831613558] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:14,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147282047] [2022-02-09 01:16:14,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:16:14,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:14,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:14,252 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:14,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-09 01:16:14,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:16:14,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:14,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:14,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:14,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:15,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147282047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:15,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:15,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:15,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053211561] [2022-02-09 01:16:15,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:15,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:15,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:15,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:15,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:15,396 INFO L87 Difference]: Start difference. First operand 3349 states and 9981 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:19,325 INFO L93 Difference]: Finished difference Result 5612 states and 15933 transitions. [2022-02-09 01:16:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-09 01:16:19,326 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:19,334 INFO L225 Difference]: With dead ends: 5612 [2022-02-09 01:16:19,335 INFO L226 Difference]: Without dead ends: 5369 [2022-02-09 01:16:19,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5344 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1628, Invalid=14884, Unknown=0, NotChecked=0, Total=16512 [2022-02-09 01:16:19,341 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1106 mSDsluCounter, 5146 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:19,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 5155 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:16:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2022-02-09 01:16:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 3325. [2022-02-09 01:16:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 2.9732250300842358) internal successors, (9883), 3324 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 9883 transitions. [2022-02-09 01:16:19,401 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 9883 transitions. Word has length 74 [2022-02-09 01:16:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:19,401 INFO L470 AbstractCegarLoop]: Abstraction has 3325 states and 9883 transitions. [2022-02-09 01:16:19,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 9883 transitions. [2022-02-09 01:16:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:19,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:19,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:19,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:19,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-02-09 01:16:19,606 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:19,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1327806731, now seen corresponding path program 52 times [2022-02-09 01:16:19,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:19,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158403067] [2022-02-09 01:16:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:19,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:19,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:19,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158403067] [2022-02-09 01:16:19,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158403067] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:19,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490690411] [2022-02-09 01:16:19,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:16:19,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:19,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:19,797 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:19,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-09 01:16:19,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:16:19,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:19,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:19,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:20,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:20,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490690411] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:20,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:20,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:20,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356086670] [2022-02-09 01:16:20,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:20,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:20,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:20,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:20,951 INFO L87 Difference]: Start difference. First operand 3325 states and 9883 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:26,242 INFO L93 Difference]: Finished difference Result 6086 states and 17244 transitions. [2022-02-09 01:16:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-09 01:16:26,242 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:26,251 INFO L225 Difference]: With dead ends: 6086 [2022-02-09 01:16:26,251 INFO L226 Difference]: Without dead ends: 5873 [2022-02-09 01:16:26,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7977 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2229, Invalid=21027, Unknown=0, NotChecked=0, Total=23256 [2022-02-09 01:16:26,254 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1228 mSDsluCounter, 4894 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 4924 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:26,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 4924 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:16:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5873 states. [2022-02-09 01:16:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5873 to 3509. [2022-02-09 01:16:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3508 states have (on average 2.9740592930444696) internal successors, (10433), 3508 states have internal predecessors, (10433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 10433 transitions. [2022-02-09 01:16:26,320 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 10433 transitions. Word has length 74 [2022-02-09 01:16:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:26,320 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 10433 transitions. [2022-02-09 01:16:26,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 10433 transitions. [2022-02-09 01:16:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:26,324 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:26,325 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:26,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:26,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-09 01:16:26,525 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:26,526 INFO L85 PathProgramCache]: Analyzing trace with hash -485881909, now seen corresponding path program 53 times [2022-02-09 01:16:26,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:26,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928431621] [2022-02-09 01:16:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:26,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:26,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:26,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928431621] [2022-02-09 01:16:26,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928431621] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:26,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840509512] [2022-02-09 01:16:26,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:16:26,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:26,740 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:26,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-09 01:16:26,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:16:26,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:26,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:26,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:27,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:27,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840509512] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:27,903 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:27,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:27,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669446021] [2022-02-09 01:16:27,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:27,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:27,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:27,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:27,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:27,904 INFO L87 Difference]: Start difference. First operand 3509 states and 10433 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:33,544 INFO L93 Difference]: Finished difference Result 7054 states and 20040 transitions. [2022-02-09 01:16:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-09 01:16:33,544 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:33,556 INFO L225 Difference]: With dead ends: 7054 [2022-02-09 01:16:33,556 INFO L226 Difference]: Without dead ends: 6901 [2022-02-09 01:16:33,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8492 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2703, Invalid=21477, Unknown=0, NotChecked=0, Total=24180 [2022-02-09 01:16:33,559 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1230 mSDsluCounter, 7479 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 7433 SdHoareTripleChecker+Invalid, 4057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:33,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 7433 Invalid, 4057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3866 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 01:16:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2022-02-09 01:16:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 3597. [2022-02-09 01:16:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 2.981924360400445) internal successors, (10723), 3596 states have internal predecessors, (10723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 10723 transitions. [2022-02-09 01:16:33,640 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 10723 transitions. Word has length 74 [2022-02-09 01:16:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:33,640 INFO L470 AbstractCegarLoop]: Abstraction has 3597 states and 10723 transitions. [2022-02-09 01:16:33,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 10723 transitions. [2022-02-09 01:16:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:33,645 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:33,645 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:33,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:33,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:33,846 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1159755165, now seen corresponding path program 54 times [2022-02-09 01:16:33,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:33,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504458826] [2022-02-09 01:16:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:33,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:34,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:34,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504458826] [2022-02-09 01:16:34,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504458826] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:34,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772377873] [2022-02-09 01:16:34,061 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:16:34,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:34,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:34,063 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:34,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-09 01:16:34,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:16:34,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:34,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:34,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:34,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:35,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772377873] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:35,234 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:35,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:35,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528195288] [2022-02-09 01:16:35,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:35,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:35,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:35,235 INFO L87 Difference]: Start difference. First operand 3597 states and 10723 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:40,826 INFO L93 Difference]: Finished difference Result 6511 states and 18544 transitions. [2022-02-09 01:16:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-09 01:16:40,827 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:40,837 INFO L225 Difference]: With dead ends: 6511 [2022-02-09 01:16:40,837 INFO L226 Difference]: Without dead ends: 6313 [2022-02-09 01:16:40,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9175 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2527, Invalid=23233, Unknown=0, NotChecked=0, Total=25760 [2022-02-09 01:16:40,839 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1272 mSDsluCounter, 5118 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:40,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 5179 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:16:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2022-02-09 01:16:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 3593. [2022-02-09 01:16:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3592 states have (on average 2.977728285077951) internal successors, (10696), 3592 states have internal predecessors, (10696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 10696 transitions. [2022-02-09 01:16:40,896 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 10696 transitions. Word has length 74 [2022-02-09 01:16:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:40,896 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 10696 transitions. [2022-02-09 01:16:40,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 10696 transitions. [2022-02-09 01:16:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:40,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:40,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:40,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:41,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:41,102 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash -410298985, now seen corresponding path program 55 times [2022-02-09 01:16:41,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:41,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930149920] [2022-02-09 01:16:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:41,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:41,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:41,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930149920] [2022-02-09 01:16:41,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930149920] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:41,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740476368] [2022-02-09 01:16:41,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:16:41,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:41,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:41,285 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:41,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-09 01:16:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:41,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:41,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:41,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:42,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740476368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:42,300 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:42,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:16:42,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727630267] [2022-02-09 01:16:42,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:42,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:16:42,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:16:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:16:42,301 INFO L87 Difference]: Start difference. First operand 3593 states and 10696 transitions. Second operand has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:44,710 INFO L93 Difference]: Finished difference Result 5647 states and 16137 transitions. [2022-02-09 01:16:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-09 01:16:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:44,719 INFO L225 Difference]: With dead ends: 5647 [2022-02-09 01:16:44,719 INFO L226 Difference]: Without dead ends: 5545 [2022-02-09 01:16:44,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1246, Invalid=9056, Unknown=0, NotChecked=0, Total=10302 [2022-02-09 01:16:44,721 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 931 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:44,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 4545 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:16:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-02-09 01:16:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 3749. [2022-02-09 01:16:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3749 states, 3748 states have (on average 2.9906616862326576) internal successors, (11209), 3748 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 11209 transitions. [2022-02-09 01:16:44,785 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 11209 transitions. Word has length 74 [2022-02-09 01:16:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:44,785 INFO L470 AbstractCegarLoop]: Abstraction has 3749 states and 11209 transitions. [2022-02-09 01:16:44,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 11209 transitions. [2022-02-09 01:16:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:44,804 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:44,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:44,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:45,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:45,022 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:45,022 INFO L85 PathProgramCache]: Analyzing trace with hash -389581599, now seen corresponding path program 56 times [2022-02-09 01:16:45,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:45,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302683794] [2022-02-09 01:16:45,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:45,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:45,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:45,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302683794] [2022-02-09 01:16:45,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302683794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:45,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768496147] [2022-02-09 01:16:45,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:16:45,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:45,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:45,210 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:45,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-09 01:16:45,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:16:45,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:45,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:45,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:45,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:46,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768496147] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:46,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:46,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:46,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836636243] [2022-02-09 01:16:46,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:46,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:46,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1436, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:46,286 INFO L87 Difference]: Start difference. First operand 3749 states and 11209 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:49,107 INFO L93 Difference]: Finished difference Result 5455 states and 15673 transitions. [2022-02-09 01:16:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-09 01:16:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:49,115 INFO L225 Difference]: With dead ends: 5455 [2022-02-09 01:16:49,115 INFO L226 Difference]: Without dead ends: 5353 [2022-02-09 01:16:49,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2678 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1115, Invalid=7815, Unknown=0, NotChecked=0, Total=8930 [2022-02-09 01:16:49,116 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 941 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 4014 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:49,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 4014 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:16:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-02-09 01:16:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3777. [2022-02-09 01:16:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3777 states, 3776 states have (on average 2.9909957627118646) internal successors, (11294), 3776 states have internal predecessors, (11294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 11294 transitions. [2022-02-09 01:16:49,166 INFO L78 Accepts]: Start accepts. Automaton has 3777 states and 11294 transitions. Word has length 74 [2022-02-09 01:16:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:49,166 INFO L470 AbstractCegarLoop]: Abstraction has 3777 states and 11294 transitions. [2022-02-09 01:16:49,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3777 states and 11294 transitions. [2022-02-09 01:16:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:49,171 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:49,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:49,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:49,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-09 01:16:49,371 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:49,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1034082361, now seen corresponding path program 57 times [2022-02-09 01:16:49,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:49,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151894223] [2022-02-09 01:16:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:49,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:49,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:49,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151894223] [2022-02-09 01:16:49,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151894223] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:49,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762564351] [2022-02-09 01:16:49,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:16:49,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:49,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:49,588 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:49,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-09 01:16:49,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:16:49,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:49,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:50,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:50,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762564351] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:50,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:50,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:50,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498485436] [2022-02-09 01:16:50,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:50,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:50,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:50,665 INFO L87 Difference]: Start difference. First operand 3777 states and 11294 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:58,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:58,065 INFO L93 Difference]: Finished difference Result 8438 states and 23665 transitions. [2022-02-09 01:16:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-02-09 01:16:58,065 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:16:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:58,078 INFO L225 Difference]: With dead ends: 8438 [2022-02-09 01:16:58,078 INFO L226 Difference]: Without dead ends: 8204 [2022-02-09 01:16:58,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16868 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5486, Invalid=38404, Unknown=0, NotChecked=0, Total=43890 [2022-02-09 01:16:58,081 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 2232 mSDsluCounter, 5929 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 5939 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:58,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 5939 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:16:58,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2022-02-09 01:16:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 4045. [2022-02-09 01:16:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4044 states have (on average 3.007665677546983) internal successors, (12163), 4044 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 12163 transitions. [2022-02-09 01:16:58,182 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 12163 transitions. Word has length 74 [2022-02-09 01:16:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:58,182 INFO L470 AbstractCegarLoop]: Abstraction has 4045 states and 12163 transitions. [2022-02-09 01:16:58,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 12163 transitions. [2022-02-09 01:16:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:16:58,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:58,188 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:58,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:58,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-09 01:16:58,403 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:58,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1509045113, now seen corresponding path program 58 times [2022-02-09 01:16:58,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:58,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016664780] [2022-02-09 01:16:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:58,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:58,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:58,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016664780] [2022-02-09 01:16:58,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016664780] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:58,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110045143] [2022-02-09 01:16:58,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:16:58,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:58,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:58,612 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:58,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-09 01:16:58,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:16:58,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:58,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:16:58,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:59,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:59,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110045143] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:59,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:59,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:16:59,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693451839] [2022-02-09 01:16:59,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:59,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:16:59,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:16:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:16:59,834 INFO L87 Difference]: Start difference. First operand 4045 states and 12163 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:06,938 INFO L93 Difference]: Finished difference Result 8622 states and 24476 transitions. [2022-02-09 01:17:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-09 01:17:06,938 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:17:06,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:06,952 INFO L225 Difference]: With dead ends: 8622 [2022-02-09 01:17:06,953 INFO L226 Difference]: Without dead ends: 8337 [2022-02-09 01:17:06,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12173 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2808, Invalid=30498, Unknown=0, NotChecked=0, Total=33306 [2022-02-09 01:17:06,955 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1608 mSDsluCounter, 6504 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 6528 SdHoareTripleChecker+Invalid, 3510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:06,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 6528 Invalid, 3510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 01:17:06,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2022-02-09 01:17:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 4325. [2022-02-09 01:17:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4325 states, 4324 states have (on average 3.027058279370953) internal successors, (13089), 4324 states have internal predecessors, (13089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 13089 transitions. [2022-02-09 01:17:07,045 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 13089 transitions. Word has length 74 [2022-02-09 01:17:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:07,045 INFO L470 AbstractCegarLoop]: Abstraction has 4325 states and 13089 transitions. [2022-02-09 01:17:07,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 13089 transitions. [2022-02-09 01:17:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:17:07,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:07,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:07,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:07,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:07,252 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash 835171857, now seen corresponding path program 59 times [2022-02-09 01:17:07,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:07,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746343978] [2022-02-09 01:17:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:07,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:07,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:07,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746343978] [2022-02-09 01:17:07,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746343978] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:07,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903760895] [2022-02-09 01:17:07,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:17:07,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:07,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:07,472 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:07,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-09 01:17:07,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:17:07,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:07,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:17:07,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:08,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:08,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903760895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:08,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:08,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:17:08,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991534138] [2022-02-09 01:17:08,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:08,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:17:08,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:17:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:17:08,800 INFO L87 Difference]: Start difference. First operand 4325 states and 13089 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:15,187 INFO L93 Difference]: Finished difference Result 7542 states and 21572 transitions. [2022-02-09 01:17:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-09 01:17:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:17:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:15,200 INFO L225 Difference]: With dead ends: 7542 [2022-02-09 01:17:15,200 INFO L226 Difference]: Without dead ends: 7131 [2022-02-09 01:17:15,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9795 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2682, Invalid=25040, Unknown=0, NotChecked=0, Total=27722 [2022-02-09 01:17:15,203 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1374 mSDsluCounter, 6476 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 6464 SdHoareTripleChecker+Invalid, 3621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:15,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 6464 Invalid, 3621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 3443 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 01:17:15,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7131 states. [2022-02-09 01:17:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7131 to 4573. [2022-02-09 01:17:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 3.034776902887139) internal successors, (13875), 4572 states have internal predecessors, (13875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 13875 transitions. [2022-02-09 01:17:15,295 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 13875 transitions. Word has length 74 [2022-02-09 01:17:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:15,295 INFO L470 AbstractCegarLoop]: Abstraction has 4573 states and 13875 transitions. [2022-02-09 01:17:15,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 13875 transitions. [2022-02-09 01:17:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:17:15,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:15,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:15,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:15,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:15,503 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -125777637, now seen corresponding path program 60 times [2022-02-09 01:17:15,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:15,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141887172] [2022-02-09 01:17:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:15,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:15,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:15,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141887172] [2022-02-09 01:17:15,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141887172] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:15,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807712759] [2022-02-09 01:17:15,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:17:15,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:15,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:15,708 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:15,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-09 01:17:15,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:17:15,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:15,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:17:15,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:16,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:16,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807712759] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:16,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:16,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:17:16,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223263096] [2022-02-09 01:17:16,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:16,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:17:16,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:17:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:17:16,874 INFO L87 Difference]: Start difference. First operand 4573 states and 13875 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:25,208 INFO L93 Difference]: Finished difference Result 9691 states and 27577 transitions. [2022-02-09 01:17:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-09 01:17:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:17:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:25,224 INFO L225 Difference]: With dead ends: 9691 [2022-02-09 01:17:25,225 INFO L226 Difference]: Without dead ends: 9478 [2022-02-09 01:17:25,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15071 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3428, Invalid=36772, Unknown=0, NotChecked=0, Total=40200 [2022-02-09 01:17:25,227 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1816 mSDsluCounter, 8084 mSDsCounter, 0 mSdLazyCounter, 3978 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 7954 SdHoareTripleChecker+Invalid, 4247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 3978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:25,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1816 Valid, 7954 Invalid, 4247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 3978 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 01:17:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9478 states. [2022-02-09 01:17:25,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9478 to 4804. [2022-02-09 01:17:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4803 states have (on average 3.047886737455757) internal successors, (14639), 4803 states have internal predecessors, (14639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:25,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 14639 transitions. [2022-02-09 01:17:25,341 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 14639 transitions. Word has length 74 [2022-02-09 01:17:25,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:25,341 INFO L470 AbstractCegarLoop]: Abstraction has 4804 states and 14639 transitions. [2022-02-09 01:17:25,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:25,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 14639 transitions. [2022-02-09 01:17:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:17:25,348 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:25,348 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:25,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:25,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:25,549 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash -799650893, now seen corresponding path program 61 times [2022-02-09 01:17:25,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:25,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732156207] [2022-02-09 01:17:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:25,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:25,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:25,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732156207] [2022-02-09 01:17:25,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732156207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:25,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218648368] [2022-02-09 01:17:25,781 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:17:25,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:25,782 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:25,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-09 01:17:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:25,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:17:25,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:26,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:26,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218648368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:26,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:26,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:17:26,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48162970] [2022-02-09 01:17:26,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:26,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:17:26,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:26,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:17:26,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:17:26,991 INFO L87 Difference]: Start difference. First operand 4804 states and 14639 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:33,035 INFO L93 Difference]: Finished difference Result 7968 states and 22993 transitions. [2022-02-09 01:17:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-02-09 01:17:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:17:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:33,048 INFO L225 Difference]: With dead ends: 7968 [2022-02-09 01:17:33,048 INFO L226 Difference]: Without dead ends: 7644 [2022-02-09 01:17:33,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9845 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2738, Invalid=25318, Unknown=0, NotChecked=0, Total=28056 [2022-02-09 01:17:33,050 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1519 mSDsluCounter, 5989 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:33,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 5976 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 01:17:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7644 states. [2022-02-09 01:17:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7644 to 4836. [2022-02-09 01:17:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4836 states, 4835 states have (on average 3.050879007238883) internal successors, (14751), 4835 states have internal predecessors, (14751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 14751 transitions. [2022-02-09 01:17:33,152 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 14751 transitions. Word has length 74 [2022-02-09 01:17:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:33,152 INFO L470 AbstractCegarLoop]: Abstraction has 4836 states and 14751 transitions. [2022-02-09 01:17:33,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 14751 transitions. [2022-02-09 01:17:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:17:33,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:33,159 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:33,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:33,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:33,367 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash -537638723, now seen corresponding path program 62 times [2022-02-09 01:17:33,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:33,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247805362] [2022-02-09 01:17:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:33,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:33,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:33,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247805362] [2022-02-09 01:17:33,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247805362] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:33,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267430444] [2022-02-09 01:17:33,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:17:33,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:33,638 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:33,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-09 01:17:33,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:17:33,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:33,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:17:33,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:34,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:34,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267430444] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:34,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:34,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:17:34,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987749083] [2022-02-09 01:17:34,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:34,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:17:34,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:17:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:17:34,916 INFO L87 Difference]: Start difference. First operand 4836 states and 14751 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:42,070 INFO L93 Difference]: Finished difference Result 8123 states and 23369 transitions. [2022-02-09 01:17:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-02-09 01:17:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:17:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:42,084 INFO L225 Difference]: With dead ends: 8123 [2022-02-09 01:17:42,084 INFO L226 Difference]: Without dead ends: 7712 [2022-02-09 01:17:42,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11234 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2914, Invalid=28592, Unknown=0, NotChecked=0, Total=31506 [2022-02-09 01:17:42,085 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 1330 mSDsluCounter, 6715 mSDsCounter, 0 mSdLazyCounter, 3500 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 6688 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:42,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 6688 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3500 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 01:17:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-02-09 01:17:42,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 4848. [2022-02-09 01:17:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4848 states, 4847 states have (on average 3.042706828966371) internal successors, (14748), 4847 states have internal predecessors, (14748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 14748 transitions. [2022-02-09 01:17:42,185 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 14748 transitions. Word has length 74 [2022-02-09 01:17:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:42,185 INFO L470 AbstractCegarLoop]: Abstraction has 4848 states and 14748 transitions. [2022-02-09 01:17:42,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 14748 transitions. [2022-02-09 01:17:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:17:42,194 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:42,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:42,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:42,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-09 01:17:42,395 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2122505823, now seen corresponding path program 63 times [2022-02-09 01:17:42,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:42,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580327046] [2022-02-09 01:17:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:42,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:42,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:42,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580327046] [2022-02-09 01:17:42,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580327046] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:42,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800850753] [2022-02-09 01:17:42,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:17:42,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:42,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:42,601 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:42,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-09 01:17:42,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:17:42,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:42,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:17:42,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:43,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:43,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800850753] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:43,784 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:43,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:17:43,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959982070] [2022-02-09 01:17:43,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:43,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:17:43,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:17:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:17:43,785 INFO L87 Difference]: Start difference. First operand 4848 states and 14748 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:50,042 INFO L93 Difference]: Finished difference Result 8163 states and 23528 transitions. [2022-02-09 01:17:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-09 01:17:50,042 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:17:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:50,056 INFO L225 Difference]: With dead ends: 8163 [2022-02-09 01:17:50,057 INFO L226 Difference]: Without dead ends: 7839 [2022-02-09 01:17:50,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10803 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2796, Invalid=27654, Unknown=0, NotChecked=0, Total=30450 [2022-02-09 01:17:50,059 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1321 mSDsluCounter, 6664 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 6642 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:50,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1321 Valid, 6642 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 01:17:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2022-02-09 01:17:50,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 4669. [2022-02-09 01:17:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4669 states, 4668 states have (on average 3.0366323907455013) internal successors, (14175), 4668 states have internal predecessors, (14175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 14175 transitions. [2022-02-09 01:17:50,146 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 14175 transitions. Word has length 74 [2022-02-09 01:17:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:50,146 INFO L470 AbstractCegarLoop]: Abstraction has 4669 states and 14175 transitions. [2022-02-09 01:17:50,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 14175 transitions. [2022-02-09 01:17:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:17:50,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:50,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:50,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-09 01:17:50,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:50,353 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:50,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1337103017, now seen corresponding path program 64 times [2022-02-09 01:17:50,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:50,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361784360] [2022-02-09 01:17:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:50,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:50,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:50,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361784360] [2022-02-09 01:17:50,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361784360] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:50,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537737437] [2022-02-09 01:17:50,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:17:50,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:50,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:50,554 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:50,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-09 01:17:50,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:17:50,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:17:50,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:51,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:51,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537737437] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:51,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:51,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:17:51,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022738496] [2022-02-09 01:17:51,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:51,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:17:51,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:17:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1466, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:17:51,753 INFO L87 Difference]: Start difference. First operand 4669 states and 14175 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:58,072 INFO L93 Difference]: Finished difference Result 7668 states and 22189 transitions. [2022-02-09 01:17:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-02-09 01:17:58,072 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:17:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:58,086 INFO L225 Difference]: With dead ends: 7668 [2022-02-09 01:17:58,086 INFO L226 Difference]: Without dead ends: 7425 [2022-02-09 01:17:58,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9594 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2653, Invalid=24737, Unknown=0, NotChecked=0, Total=27390 [2022-02-09 01:17:58,088 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1220 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:58,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 4704 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:17:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2022-02-09 01:17:58,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 4875. [2022-02-09 01:17:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 3.036725482150185) internal successors, (14801), 4874 states have internal predecessors, (14801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 14801 transitions. [2022-02-09 01:17:58,179 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 14801 transitions. Word has length 74 [2022-02-09 01:17:58,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:58,179 INFO L470 AbstractCegarLoop]: Abstraction has 4875 states and 14801 transitions. [2022-02-09 01:17:58,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 14801 transitions. [2022-02-09 01:17:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:17:58,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:58,186 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:58,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:58,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-09 01:17:58,386 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash -476585623, now seen corresponding path program 65 times [2022-02-09 01:17:58,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:58,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474537984] [2022-02-09 01:17:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:58,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:58,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:58,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474537984] [2022-02-09 01:17:58,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474537984] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:58,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644597975] [2022-02-09 01:17:58,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:17:58,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:58,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:58,630 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:58,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-09 01:17:58,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:17:58,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:58,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:17:58,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:59,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:59,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644597975] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:59,910 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:59,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:17:59,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051573915] [2022-02-09 01:17:59,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:59,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:17:59,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:17:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:17:59,911 INFO L87 Difference]: Start difference. First operand 4875 states and 14801 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:09,421 INFO L93 Difference]: Finished difference Result 9948 states and 28623 transitions. [2022-02-09 01:18:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-02-09 01:18:09,422 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:18:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:09,437 INFO L225 Difference]: With dead ends: 9948 [2022-02-09 01:18:09,437 INFO L226 Difference]: Without dead ends: 9744 [2022-02-09 01:18:09,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19607 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=4533, Invalid=45419, Unknown=0, NotChecked=0, Total=49952 [2022-02-09 01:18:09,440 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1260 mSDsluCounter, 9353 mSDsCounter, 0 mSdLazyCounter, 4745 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 9285 SdHoareTripleChecker+Invalid, 4967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 4745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:09,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 9285 Invalid, 4967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4745 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-09 01:18:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9744 states. [2022-02-09 01:18:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9744 to 4951. [2022-02-09 01:18:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 3.0436363636363635) internal successors, (15066), 4950 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 15066 transitions. [2022-02-09 01:18:09,531 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 15066 transitions. Word has length 74 [2022-02-09 01:18:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:09,531 INFO L470 AbstractCegarLoop]: Abstraction has 4951 states and 15066 transitions. [2022-02-09 01:18:09,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 15066 transitions. [2022-02-09 01:18:09,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:18:09,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:09,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:09,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:09,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-09 01:18:09,739 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1150458879, now seen corresponding path program 66 times [2022-02-09 01:18:09,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:09,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467518641] [2022-02-09 01:18:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:09,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:09,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:09,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467518641] [2022-02-09 01:18:09,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467518641] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:09,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440408489] [2022-02-09 01:18:09,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:18:09,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:09,933 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:09,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-09 01:18:10,012 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:18:10,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:10,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:18:10,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:10,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:11,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440408489] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:11,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:11,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-09 01:18:11,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122481574] [2022-02-09 01:18:11,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:11,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:18:11,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:18:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:18:11,171 INFO L87 Difference]: Start difference. First operand 4951 states and 15066 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:19,989 INFO L93 Difference]: Finished difference Result 8769 states and 25042 transitions. [2022-02-09 01:18:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-09 01:18:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:18:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:20,003 INFO L225 Difference]: With dead ends: 8769 [2022-02-09 01:18:20,003 INFO L226 Difference]: Without dead ends: 8469 [2022-02-09 01:18:20,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15500 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=3798, Invalid=37614, Unknown=0, NotChecked=0, Total=41412 [2022-02-09 01:18:20,006 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1378 mSDsluCounter, 7225 mSDsCounter, 0 mSdLazyCounter, 3729 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 7216 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:20,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 7216 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 3729 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 01:18:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2022-02-09 01:18:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 4907. [2022-02-09 01:18:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 4906 states have (on average 3.0454545454545454) internal successors, (14941), 4906 states have internal predecessors, (14941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 14941 transitions. [2022-02-09 01:18:20,102 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 14941 transitions. Word has length 74 [2022-02-09 01:18:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:20,102 INFO L470 AbstractCegarLoop]: Abstraction has 4907 states and 14941 transitions. [2022-02-09 01:18:20,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 14941 transitions. [2022-02-09 01:18:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:18:20,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:20,109 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:20,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:20,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-09 01:18:20,309 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1173322375, now seen corresponding path program 67 times [2022-02-09 01:18:20,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:20,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000016857] [2022-02-09 01:18:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:20,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:20,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:20,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000016857] [2022-02-09 01:18:20,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000016857] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:20,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001256025] [2022-02-09 01:18:20,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:18:20,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:20,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:20,483 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:20,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-09 01:18:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:20,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:18:20,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:20,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:21,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001256025] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:21,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:21,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:18:21,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876473827] [2022-02-09 01:18:21,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:21,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:18:21,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:18:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:18:21,452 INFO L87 Difference]: Start difference. First operand 4907 states and 14941 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:24,035 INFO L93 Difference]: Finished difference Result 7553 states and 22130 transitions. [2022-02-09 01:18:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-09 01:18:24,035 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:18:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:24,049 INFO L225 Difference]: With dead ends: 7553 [2022-02-09 01:18:24,049 INFO L226 Difference]: Without dead ends: 7451 [2022-02-09 01:18:24,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1361, Invalid=10411, Unknown=0, NotChecked=0, Total=11772 [2022-02-09 01:18:24,051 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 713 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:24,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 4512 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:18:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2022-02-09 01:18:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 5079. [2022-02-09 01:18:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 5078 states have (on average 3.0496258369436786) internal successors, (15486), 5078 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 15486 transitions. [2022-02-09 01:18:24,153 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 15486 transitions. Word has length 74 [2022-02-09 01:18:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:24,153 INFO L470 AbstractCegarLoop]: Abstraction has 5079 states and 15486 transitions. [2022-02-09 01:18:24,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 15486 transitions. [2022-02-09 01:18:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:18:24,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:24,160 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:24,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-09 01:18:24,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-09 01:18:24,363 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1152604989, now seen corresponding path program 68 times [2022-02-09 01:18:24,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:24,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010419910] [2022-02-09 01:18:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:24,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:24,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:24,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010419910] [2022-02-09 01:18:24,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010419910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:24,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368512939] [2022-02-09 01:18:24,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:18:24,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:24,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:24,550 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:24,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-09 01:18:24,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:18:24,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:24,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:18:24,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:25,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:25,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368512939] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:25,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:25,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:18:25,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727988322] [2022-02-09 01:18:25,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:25,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:18:25,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:18:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:18:25,535 INFO L87 Difference]: Start difference. First operand 5079 states and 15486 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:28,216 INFO L93 Difference]: Finished difference Result 7397 states and 21753 transitions. [2022-02-09 01:18:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-09 01:18:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:18:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:28,230 INFO L225 Difference]: With dead ends: 7397 [2022-02-09 01:18:28,230 INFO L226 Difference]: Without dead ends: 7295 [2022-02-09 01:18:28,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1201, Invalid=8899, Unknown=0, NotChecked=0, Total=10100 [2022-02-09 01:18:28,232 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 805 mSDsluCounter, 4133 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 4139 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:28,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 4139 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:18:28,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7295 states. [2022-02-09 01:18:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7295 to 5115. [2022-02-09 01:18:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 3.0498631208447398) internal successors, (15597), 5114 states have internal predecessors, (15597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 15597 transitions. [2022-02-09 01:18:28,347 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 15597 transitions. Word has length 74 [2022-02-09 01:18:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:28,347 INFO L470 AbstractCegarLoop]: Abstraction has 5115 states and 15597 transitions. [2022-02-09 01:18:28,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 15597 transitions. [2022-02-09 01:18:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:18:28,354 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:28,354 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:28,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:28,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:28,556 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1797105751, now seen corresponding path program 69 times [2022-02-09 01:18:28,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:28,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672517457] [2022-02-09 01:18:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:28,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:28,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:28,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672517457] [2022-02-09 01:18:28,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672517457] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:28,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444144193] [2022-02-09 01:18:28,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:18:28,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:28,792 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:28,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-09 01:18:28,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:18:28,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:28,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:18:28,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:29,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:29,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444144193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:29,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:29,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:18:29,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329887185] [2022-02-09 01:18:29,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:29,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:18:29,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:18:29,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:18:29,872 INFO L87 Difference]: Start difference. First operand 5115 states and 15597 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:39,771 INFO L93 Difference]: Finished difference Result 12164 states and 34786 transitions. [2022-02-09 01:18:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-02-09 01:18:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:18:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:39,793 INFO L225 Difference]: With dead ends: 12164 [2022-02-09 01:18:39,793 INFO L226 Difference]: Without dead ends: 11747 [2022-02-09 01:18:39,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24035 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=7539, Invalid=54711, Unknown=0, NotChecked=0, Total=62250 [2022-02-09 01:18:39,797 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1819 mSDsluCounter, 9310 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 9130 SdHoareTripleChecker+Invalid, 4869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:39,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1819 Valid, 9130 Invalid, 4869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-09 01:18:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11747 states. [2022-02-09 01:18:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11747 to 5419. [2022-02-09 01:18:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 3.0596160944998156) internal successors, (16577), 5418 states have internal predecessors, (16577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 16577 transitions. [2022-02-09 01:18:39,933 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 16577 transitions. Word has length 74 [2022-02-09 01:18:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:39,933 INFO L470 AbstractCegarLoop]: Abstraction has 5419 states and 16577 transitions. [2022-02-09 01:18:39,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 16577 transitions. [2022-02-09 01:18:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:18:39,941 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:39,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:39,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:40,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:40,148 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash 746021723, now seen corresponding path program 70 times [2022-02-09 01:18:40,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:40,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444877296] [2022-02-09 01:18:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:40,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:40,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:40,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444877296] [2022-02-09 01:18:40,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444877296] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:40,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216849348] [2022-02-09 01:18:40,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:18:40,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:40,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:40,347 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:40,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-09 01:18:40,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:18:40,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:40,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:18:40,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:40,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:41,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216849348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:41,744 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:41,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:18:41,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376887062] [2022-02-09 01:18:41,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:41,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:18:41,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:18:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:18:41,745 INFO L87 Difference]: Start difference. First operand 5419 states and 16577 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:52,880 INFO L93 Difference]: Finished difference Result 12050 states and 34806 transitions. [2022-02-09 01:18:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-09 01:18:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:18:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:52,904 INFO L225 Difference]: With dead ends: 12050 [2022-02-09 01:18:52,904 INFO L226 Difference]: Without dead ends: 11654 [2022-02-09 01:18:52,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19156 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=3949, Invalid=46003, Unknown=0, NotChecked=0, Total=49952 [2022-02-09 01:18:52,907 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1659 mSDsluCounter, 7302 mSDsCounter, 0 mSdLazyCounter, 3793 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 7367 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 3793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:52,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 7367 Invalid, 4066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 3793 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 01:18:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11654 states. [2022-02-09 01:18:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11654 to 6102. [2022-02-09 01:18:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 6101 states have (on average 3.0808064251762004) internal successors, (18796), 6101 states have internal predecessors, (18796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 18796 transitions. [2022-02-09 01:18:53,051 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 18796 transitions. Word has length 74 [2022-02-09 01:18:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:53,051 INFO L470 AbstractCegarLoop]: Abstraction has 6102 states and 18796 transitions. [2022-02-09 01:18:53,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 18796 transitions. [2022-02-09 01:18:53,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:18:53,060 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:53,060 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:53,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:53,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:53,261 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash 72148467, now seen corresponding path program 71 times [2022-02-09 01:18:53,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:53,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506350395] [2022-02-09 01:18:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:53,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:53,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:53,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506350395] [2022-02-09 01:18:53,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506350395] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:53,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042536061] [2022-02-09 01:18:53,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:18:53,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:53,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:53,463 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:53,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-09 01:18:53,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:18:53,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:53,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:18:53,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:54,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:54,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042536061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:54,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:54,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:18:54,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731680258] [2022-02-09 01:18:54,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:54,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:18:54,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:18:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:18:54,677 INFO L87 Difference]: Start difference. First operand 6102 states and 18796 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:03,874 INFO L93 Difference]: Finished difference Result 12376 states and 36090 transitions. [2022-02-09 01:19:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-02-09 01:19:03,874 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:19:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:03,898 INFO L225 Difference]: With dead ends: 12376 [2022-02-09 01:19:03,898 INFO L226 Difference]: Without dead ends: 11845 [2022-02-09 01:19:03,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17065 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3982, Invalid=41174, Unknown=0, NotChecked=0, Total=45156 [2022-02-09 01:19:03,900 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1304 mSDsluCounter, 7307 mSDsCounter, 0 mSdLazyCounter, 4021 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 7291 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 4021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:03,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 7291 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 4021 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 01:19:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2022-02-09 01:19:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 6710. [2022-02-09 01:19:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 6709 states have (on average 3.0997167983306007) internal successors, (20796), 6709 states have internal predecessors, (20796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 20796 transitions. [2022-02-09 01:19:04,083 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 20796 transitions. Word has length 74 [2022-02-09 01:19:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:04,083 INFO L470 AbstractCegarLoop]: Abstraction has 6710 states and 20796 transitions. [2022-02-09 01:19:04,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 20796 transitions. [2022-02-09 01:19:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:19:04,097 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:04,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:04,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:04,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-02-09 01:19:04,298 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1300662113, now seen corresponding path program 72 times [2022-02-09 01:19:04,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:04,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974233103] [2022-02-09 01:19:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:04,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:04,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:04,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974233103] [2022-02-09 01:19:04,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974233103] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:04,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109094809] [2022-02-09 01:19:04,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:19:04,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:04,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:04,509 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:04,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-09 01:19:04,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:19:04,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:19:04,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:19:04,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:05,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:05,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109094809] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:05,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:05,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:19:05,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693706306] [2022-02-09 01:19:05,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:05,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:19:05,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:19:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:19:05,837 INFO L87 Difference]: Start difference. First operand 6710 states and 20796 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:15,226 INFO L93 Difference]: Finished difference Result 12204 states and 35577 transitions. [2022-02-09 01:19:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-02-09 01:19:15,226 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:19:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:15,249 INFO L225 Difference]: With dead ends: 12204 [2022-02-09 01:19:15,249 INFO L226 Difference]: Without dead ends: 11778 [2022-02-09 01:19:15,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17311 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=3918, Invalid=42092, Unknown=0, NotChecked=0, Total=46010 [2022-02-09 01:19:15,252 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1470 mSDsluCounter, 6188 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:15,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 6251 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 01:19:15,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11778 states. [2022-02-09 01:19:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11778 to 6411. [2022-02-09 01:19:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 3.088455538221529) internal successors, (19797), 6410 states have internal predecessors, (19797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 19797 transitions. [2022-02-09 01:19:15,393 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 19797 transitions. Word has length 74 [2022-02-09 01:19:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:15,394 INFO L470 AbstractCegarLoop]: Abstraction has 6411 states and 19797 transitions. [2022-02-09 01:19:15,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 19797 transitions. [2022-02-09 01:19:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:19:15,404 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:15,404 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:15,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:15,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:15,604 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash 574079627, now seen corresponding path program 73 times [2022-02-09 01:19:15,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:15,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626239510] [2022-02-09 01:19:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:15,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:15,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:15,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626239510] [2022-02-09 01:19:15,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626239510] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:15,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620971411] [2022-02-09 01:19:15,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:19:15,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:15,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:15,844 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:15,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-09 01:19:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:15,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:19:15,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:16,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:17,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620971411] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:17,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:17,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:19:17,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881866623] [2022-02-09 01:19:17,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:17,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:19:17,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:19:17,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:19:17,029 INFO L87 Difference]: Start difference. First operand 6411 states and 19797 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:24,673 INFO L93 Difference]: Finished difference Result 11326 states and 33741 transitions. [2022-02-09 01:19:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-02-09 01:19:24,673 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:19:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:24,701 INFO L225 Difference]: With dead ends: 11326 [2022-02-09 01:19:24,701 INFO L226 Difference]: Without dead ends: 11113 [2022-02-09 01:19:24,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13254 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3326, Invalid=32964, Unknown=0, NotChecked=0, Total=36290 [2022-02-09 01:19:24,705 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1062 mSDsluCounter, 5329 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 5364 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:24,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 5364 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:19:24,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11113 states. [2022-02-09 01:19:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11113 to 6907. [2022-02-09 01:19:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 6906 states have (on average 3.08673617144512) internal successors, (21317), 6906 states have internal predecessors, (21317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 21317 transitions. [2022-02-09 01:19:24,872 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 21317 transitions. Word has length 74 [2022-02-09 01:19:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:24,872 INFO L470 AbstractCegarLoop]: Abstraction has 6907 states and 21317 transitions. [2022-02-09 01:19:24,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 21317 transitions. [2022-02-09 01:19:24,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:19:24,882 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:24,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:24,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:25,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:25,083 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1239609013, now seen corresponding path program 74 times [2022-02-09 01:19:25,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:25,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954828303] [2022-02-09 01:19:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:25,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:25,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:25,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954828303] [2022-02-09 01:19:25,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954828303] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:25,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208225751] [2022-02-09 01:19:25,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:19:25,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:25,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:25,348 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:25,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-09 01:19:25,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:19:25,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:19:25,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:19:25,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:25,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:26,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208225751] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:26,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:26,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:19:26,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351458863] [2022-02-09 01:19:26,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:26,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:19:26,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:19:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:19:26,650 INFO L87 Difference]: Start difference. First operand 6907 states and 21317 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:37,636 INFO L93 Difference]: Finished difference Result 14462 states and 42857 transitions. [2022-02-09 01:19:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-02-09 01:19:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:19:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:37,665 INFO L225 Difference]: With dead ends: 14462 [2022-02-09 01:19:37,665 INFO L226 Difference]: Without dead ends: 14258 [2022-02-09 01:19:37,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23027 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=5051, Invalid=53755, Unknown=0, NotChecked=0, Total=58806 [2022-02-09 01:19:37,669 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1347 mSDsluCounter, 7440 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 7493 SdHoareTripleChecker+Invalid, 4359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:37,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 7493 Invalid, 4359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 01:19:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2022-02-09 01:19:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 7235. [2022-02-09 01:19:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 3.1112800663533315) internal successors, (22507), 7234 states have internal predecessors, (22507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 22507 transitions. [2022-02-09 01:19:37,834 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 22507 transitions. Word has length 74 [2022-02-09 01:19:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:37,835 INFO L470 AbstractCegarLoop]: Abstraction has 7235 states and 22507 transitions. [2022-02-09 01:19:37,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 22507 transitions. [2022-02-09 01:19:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:19:37,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:37,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:37,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:38,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-02-09 01:19:38,052 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:38,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482269, now seen corresponding path program 75 times [2022-02-09 01:19:38,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:38,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746361678] [2022-02-09 01:19:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:38,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:38,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:38,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746361678] [2022-02-09 01:19:38,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746361678] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:38,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653169145] [2022-02-09 01:19:38,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:19:38,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:38,254 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:38,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-09 01:19:38,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:19:38,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:19:38,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-09 01:19:38,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:38,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:40,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653169145] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:40,018 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:40,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-02-09 01:19:40,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56029786] [2022-02-09 01:19:40,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:40,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-09 01:19:40,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-09 01:19:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 01:19:40,020 INFO L87 Difference]: Start difference. First operand 7235 states and 22507 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:51,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:51,283 INFO L93 Difference]: Finished difference Result 12632 states and 37409 transitions. [2022-02-09 01:19:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-09 01:19:51,284 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:19:51,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:51,313 INFO L225 Difference]: With dead ends: 12632 [2022-02-09 01:19:51,313 INFO L226 Difference]: Without dead ends: 12449 [2022-02-09 01:19:51,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15625 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4664, Invalid=38808, Unknown=0, NotChecked=0, Total=43472 [2022-02-09 01:19:51,316 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1671 mSDsluCounter, 6439 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 6319 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:51,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 6319 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 01:19:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-02-09 01:19:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 7219. [2022-02-09 01:19:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7219 states, 7218 states have (on average 3.1115267387087835) internal successors, (22459), 7218 states have internal predecessors, (22459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7219 states to 7219 states and 22459 transitions. [2022-02-09 01:19:51,502 INFO L78 Accepts]: Start accepts. Automaton has 7219 states and 22459 transitions. Word has length 74 [2022-02-09 01:19:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:51,503 INFO L470 AbstractCegarLoop]: Abstraction has 7219 states and 22459 transitions. [2022-02-09 01:19:51,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7219 states and 22459 transitions. [2022-02-09 01:19:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:19:51,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:51,515 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:51,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:51,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-09 01:19:51,715 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash 746662277, now seen corresponding path program 76 times [2022-02-09 01:19:51,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:51,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717794099] [2022-02-09 01:19:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:51,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:51,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:51,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717794099] [2022-02-09 01:19:51,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717794099] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:51,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841139833] [2022-02-09 01:19:51,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:19:51,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:51,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:51,939 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:51,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-09 01:19:52,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:19:52,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:19:52,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:19:52,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:52,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:53,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841139833] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:53,219 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:53,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:19:53,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275746486] [2022-02-09 01:19:53,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:53,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:19:53,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:19:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:19:53,221 INFO L87 Difference]: Start difference. First operand 7219 states and 22459 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:02,005 INFO L93 Difference]: Finished difference Result 12840 states and 38579 transitions. [2022-02-09 01:20:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-02-09 01:20:02,005 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:02,035 INFO L225 Difference]: With dead ends: 12840 [2022-02-09 01:20:02,035 INFO L226 Difference]: Without dead ends: 12441 [2022-02-09 01:20:02,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17130 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=4124, Invalid=41458, Unknown=0, NotChecked=0, Total=45582 [2022-02-09 01:20:02,037 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1071 mSDsluCounter, 8074 mSDsCounter, 0 mSdLazyCounter, 4317 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 8024 SdHoareTripleChecker+Invalid, 4540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 4317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:02,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 8024 Invalid, 4540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 4317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 01:20:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12441 states. [2022-02-09 01:20:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12441 to 7791. [2022-02-09 01:20:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 7790 states have (on average 3.1296534017971758) internal successors, (24380), 7790 states have internal predecessors, (24380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 24380 transitions. [2022-02-09 01:20:02,202 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 24380 transitions. Word has length 74 [2022-02-09 01:20:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:02,202 INFO L470 AbstractCegarLoop]: Abstraction has 7791 states and 24380 transitions. [2022-02-09 01:20:02,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 24380 transitions. [2022-02-09 01:20:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:02,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:02,214 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:02,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:02,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:02,415 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:02,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:02,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1031249583, now seen corresponding path program 77 times [2022-02-09 01:20:02,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:02,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66850644] [2022-02-09 01:20:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:02,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:02,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:02,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66850644] [2022-02-09 01:20:02,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66850644] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:02,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269786545] [2022-02-09 01:20:02,621 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:20:02,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:02,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:02,622 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:02,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-09 01:20:02,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:20:02,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:02,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:20:02,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:03,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:03,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269786545] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:03,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:03,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:20:03,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650864159] [2022-02-09 01:20:03,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:20:03,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:20:03,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:20:03,823 INFO L87 Difference]: Start difference. First operand 7791 states and 24380 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:11,399 INFO L93 Difference]: Finished difference Result 13445 states and 40428 transitions. [2022-02-09 01:20:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-02-09 01:20:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:11,427 INFO L225 Difference]: With dead ends: 13445 [2022-02-09 01:20:11,427 INFO L226 Difference]: Without dead ends: 12920 [2022-02-09 01:20:11,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13023 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3158, Invalid=32752, Unknown=0, NotChecked=0, Total=35910 [2022-02-09 01:20:11,429 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1273 mSDsluCounter, 7442 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 7394 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:11,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 7394 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 01:20:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12920 states. [2022-02-09 01:20:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12920 to 7963. [2022-02-09 01:20:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7963 states, 7962 states have (on average 3.12597337352424) internal successors, (24889), 7962 states have internal predecessors, (24889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:11,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7963 states to 7963 states and 24889 transitions. [2022-02-09 01:20:11,591 INFO L78 Accepts]: Start accepts. Automaton has 7963 states and 24889 transitions. Word has length 74 [2022-02-09 01:20:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:11,591 INFO L470 AbstractCegarLoop]: Abstraction has 7963 states and 24889 transitions. [2022-02-09 01:20:11,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:11,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7963 states and 24889 transitions. [2022-02-09 01:20:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:11,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:11,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:11,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:11,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:11,805 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1668906567, now seen corresponding path program 78 times [2022-02-09 01:20:11,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:11,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502419227] [2022-02-09 01:20:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:11,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:12,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:12,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502419227] [2022-02-09 01:20:12,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502419227] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:12,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176470131] [2022-02-09 01:20:12,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:20:12,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:12,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:12,040 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:12,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-09 01:20:12,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:20:12,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:12,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:20:12,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:12,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:13,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176470131] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:13,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:13,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:20:13,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063291726] [2022-02-09 01:20:13,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:13,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:20:13,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:20:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:20:13,073 INFO L87 Difference]: Start difference. First operand 7963 states and 24889 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:15,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:15,803 INFO L93 Difference]: Finished difference Result 11229 states and 33866 transitions. [2022-02-09 01:20:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-09 01:20:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:15,831 INFO L225 Difference]: With dead ends: 11229 [2022-02-09 01:20:15,831 INFO L226 Difference]: Without dead ends: 11127 [2022-02-09 01:20:15,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1421, Invalid=10351, Unknown=0, NotChecked=0, Total=11772 [2022-02-09 01:20:15,833 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 823 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:15,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 3466 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:20:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11127 states. [2022-02-09 01:20:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11127 to 8027. [2022-02-09 01:20:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8027 states, 8026 states have (on average 3.128457513082482) internal successors, (25109), 8026 states have internal predecessors, (25109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 25109 transitions. [2022-02-09 01:20:16,023 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 25109 transitions. Word has length 74 [2022-02-09 01:20:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:16,023 INFO L470 AbstractCegarLoop]: Abstraction has 8027 states and 25109 transitions. [2022-02-09 01:20:16,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 25109 transitions. [2022-02-09 01:20:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:16,035 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:16,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:16,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-02-09 01:20:16,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:16,235 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:16,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1648189181, now seen corresponding path program 79 times [2022-02-09 01:20:16,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:16,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268071134] [2022-02-09 01:20:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:16,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:16,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:16,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268071134] [2022-02-09 01:20:16,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268071134] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:16,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125210900] [2022-02-09 01:20:16,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:20:16,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:16,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:16,433 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:16,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-09 01:20:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:16,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:20:16,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:17,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:17,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125210900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:17,519 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:17,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:20:17,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094690436] [2022-02-09 01:20:17,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:17,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:20:17,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:20:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:20:17,520 INFO L87 Difference]: Start difference. First operand 8027 states and 25109 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:20,502 INFO L93 Difference]: Finished difference Result 11073 states and 33489 transitions. [2022-02-09 01:20:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-09 01:20:20,502 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:20,529 INFO L225 Difference]: With dead ends: 11073 [2022-02-09 01:20:20,529 INFO L226 Difference]: Without dead ends: 10971 [2022-02-09 01:20:20,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3157 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1322, Invalid=8980, Unknown=0, NotChecked=0, Total=10302 [2022-02-09 01:20:20,530 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 775 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:20,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 4282 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:20:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2022-02-09 01:20:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 8047. [2022-02-09 01:20:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8047 states, 8046 states have (on average 3.129008202833706) internal successors, (25176), 8046 states have internal predecessors, (25176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8047 states to 8047 states and 25176 transitions. [2022-02-09 01:20:20,670 INFO L78 Accepts]: Start accepts. Automaton has 8047 states and 25176 transitions. Word has length 74 [2022-02-09 01:20:20,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:20,670 INFO L470 AbstractCegarLoop]: Abstraction has 8047 states and 25176 transitions. [2022-02-09 01:20:20,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8047 states and 25176 transitions. [2022-02-09 01:20:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:20,682 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:20,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:20,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:20,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:20,883 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:20,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:20,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2002277353, now seen corresponding path program 80 times [2022-02-09 01:20:20,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:20,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274283730] [2022-02-09 01:20:20,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:20,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:21,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:21,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274283730] [2022-02-09 01:20:21,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274283730] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:21,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284371283] [2022-02-09 01:20:21,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:20:21,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:21,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:21,081 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:21,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-09 01:20:21,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:20:21,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:21,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:20:21,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:21,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:22,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284371283] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:22,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:22,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:20:22,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917676157] [2022-02-09 01:20:22,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:22,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:20:22,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:20:22,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:20:22,088 INFO L87 Difference]: Start difference. First operand 8047 states and 25176 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:32,170 INFO L93 Difference]: Finished difference Result 16319 states and 48104 transitions. [2022-02-09 01:20:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-02-09 01:20:32,171 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:32,213 INFO L225 Difference]: With dead ends: 16319 [2022-02-09 01:20:32,213 INFO L226 Difference]: Without dead ends: 15821 [2022-02-09 01:20:32,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24168 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=7498, Invalid=54752, Unknown=0, NotChecked=0, Total=62250 [2022-02-09 01:20:32,217 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1660 mSDsluCounter, 8463 mSDsCounter, 0 mSdLazyCounter, 4194 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 8337 SdHoareTripleChecker+Invalid, 4531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 4194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:32,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1660 Valid, 8337 Invalid, 4531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 4194 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 01:20:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15821 states. [2022-02-09 01:20:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15821 to 8199. [2022-02-09 01:20:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8199 states, 8198 states have (on average 3.1278360575750184) internal successors, (25642), 8198 states have internal predecessors, (25642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 25642 transitions. [2022-02-09 01:20:32,407 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 25642 transitions. Word has length 74 [2022-02-09 01:20:32,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:32,407 INFO L470 AbstractCegarLoop]: Abstraction has 8199 states and 25642 transitions. [2022-02-09 01:20:32,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 25642 transitions. [2022-02-09 01:20:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:32,421 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:32,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:32,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:32,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:32,621 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:32,622 INFO L85 PathProgramCache]: Analyzing trace with hash 250437531, now seen corresponding path program 81 times [2022-02-09 01:20:32,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:32,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26956209] [2022-02-09 01:20:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:32,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:32,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:32,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26956209] [2022-02-09 01:20:32,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26956209] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:32,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656379322] [2022-02-09 01:20:32,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:20:32,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:32,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:32,819 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:32,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-09 01:20:32,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:20:32,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:32,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-09 01:20:32,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:33,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:34,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656379322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:34,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:34,858 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 48 [2022-02-09 01:20:34,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213385651] [2022-02-09 01:20:34,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:34,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-09 01:20:34,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-09 01:20:34,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-02-09 01:20:34,859 INFO L87 Difference]: Start difference. First operand 8199 states and 25642 transitions. Second operand has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:41,848 INFO L93 Difference]: Finished difference Result 13607 states and 41214 transitions. [2022-02-09 01:20:41,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-09 01:20:41,849 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:41,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:41,879 INFO L225 Difference]: With dead ends: 13607 [2022-02-09 01:20:41,879 INFO L226 Difference]: Without dead ends: 13505 [2022-02-09 01:20:41,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7512 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2252, Invalid=20398, Unknown=0, NotChecked=0, Total=22650 [2022-02-09 01:20:41,881 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1333 mSDsluCounter, 4765 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 4743 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:41,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 4743 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:20:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13505 states. [2022-02-09 01:20:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13505 to 8271. [2022-02-09 01:20:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8271 states, 8270 states have (on average 3.1279322853688027) internal successors, (25868), 8270 states have internal predecessors, (25868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 25868 transitions. [2022-02-09 01:20:42,053 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 25868 transitions. Word has length 74 [2022-02-09 01:20:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:42,053 INFO L470 AbstractCegarLoop]: Abstraction has 8271 states and 25868 transitions. [2022-02-09 01:20:42,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 25868 transitions. [2022-02-09 01:20:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:42,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:42,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:42,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:42,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-02-09 01:20:42,267 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1384385219, now seen corresponding path program 82 times [2022-02-09 01:20:42,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:42,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155832760] [2022-02-09 01:20:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:42,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:42,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:42,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155832760] [2022-02-09 01:20:42,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155832760] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:42,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351721440] [2022-02-09 01:20:42,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:20:42,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:42,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:42,487 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:42,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-09 01:20:42,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:20:42,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:42,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:20:42,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:43,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:43,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351721440] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:43,816 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:43,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:20:43,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093827910] [2022-02-09 01:20:43,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:43,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:20:43,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:20:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:20:43,817 INFO L87 Difference]: Start difference. First operand 8271 states and 25868 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:51,929 INFO L93 Difference]: Finished difference Result 14185 states and 42493 transitions. [2022-02-09 01:20:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-09 01:20:51,929 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:51,962 INFO L225 Difference]: With dead ends: 14185 [2022-02-09 01:20:51,962 INFO L226 Difference]: Without dead ends: 14032 [2022-02-09 01:20:51,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11407 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2992, Invalid=28514, Unknown=0, NotChecked=0, Total=31506 [2022-02-09 01:20:51,965 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1206 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 5016 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:51,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 5016 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:20:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2022-02-09 01:20:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 8675. [2022-02-09 01:20:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8675 states, 8674 states have (on average 3.1154023518561216) internal successors, (27023), 8674 states have internal predecessors, (27023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8675 states to 8675 states and 27023 transitions. [2022-02-09 01:20:52,190 INFO L78 Accepts]: Start accepts. Automaton has 8675 states and 27023 transitions. Word has length 74 [2022-02-09 01:20:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:52,191 INFO L470 AbstractCegarLoop]: Abstraction has 8675 states and 27023 transitions. [2022-02-09 01:20:52,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8675 states and 27023 transitions. [2022-02-09 01:20:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:52,205 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:52,205 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:52,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:52,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:52,419 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash -270174689, now seen corresponding path program 83 times [2022-02-09 01:20:52,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:52,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057992905] [2022-02-09 01:20:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:52,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:52,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:52,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057992905] [2022-02-09 01:20:52,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057992905] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:52,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286861319] [2022-02-09 01:20:52,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:20:52,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:52,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:52,618 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:52,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-09 01:20:52,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:20:52,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:20:52,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:53,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:53,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286861319] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:53,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:53,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:20:53,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273882886] [2022-02-09 01:20:53,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:53,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:20:53,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:20:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:20:53,588 INFO L87 Difference]: Start difference. First operand 8675 states and 27023 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:57,354 INFO L93 Difference]: Finished difference Result 12515 states and 37548 transitions. [2022-02-09 01:20:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-09 01:20:57,354 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:20:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:57,399 INFO L225 Difference]: With dead ends: 12515 [2022-02-09 01:20:57,400 INFO L226 Difference]: Without dead ends: 12041 [2022-02-09 01:20:57,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6139 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2533, Invalid=16099, Unknown=0, NotChecked=0, Total=18632 [2022-02-09 01:20:57,403 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1769 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 4651 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:57,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 4651 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:20:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12041 states. [2022-02-09 01:20:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12041 to 9191. [2022-02-09 01:20:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 9190 states have (on average 3.108378672470076) internal successors, (28566), 9190 states have internal predecessors, (28566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 28566 transitions. [2022-02-09 01:20:57,577 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 28566 transitions. Word has length 74 [2022-02-09 01:20:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:57,577 INFO L470 AbstractCegarLoop]: Abstraction has 9191 states and 28566 transitions. [2022-02-09 01:20:57,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 28566 transitions. [2022-02-09 01:20:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:20:57,592 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:57,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:57,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-09 01:20:57,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:57,805 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1690876699, now seen corresponding path program 84 times [2022-02-09 01:20:57,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:57,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754396740] [2022-02-09 01:20:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:57,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:58,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:58,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754396740] [2022-02-09 01:20:58,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754396740] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:58,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086574624] [2022-02-09 01:20:58,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:20:58,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:58,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:58,045 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:58,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-09 01:20:58,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:20:58,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:58,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:20:58,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:58,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:59,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086574624] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:59,033 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:59,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:20:59,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104594057] [2022-02-09 01:20:59,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:59,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:20:59,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:20:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:20:59,034 INFO L87 Difference]: Start difference. First operand 9191 states and 28566 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:05,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:05,229 INFO L93 Difference]: Finished difference Result 14706 states and 43590 transitions. [2022-02-09 01:21:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-02-09 01:21:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:05,264 INFO L225 Difference]: With dead ends: 14706 [2022-02-09 01:21:05,265 INFO L226 Difference]: Without dead ends: 14502 [2022-02-09 01:21:05,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12264 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3398, Invalid=29908, Unknown=0, NotChecked=0, Total=33306 [2022-02-09 01:21:05,268 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1343 mSDsluCounter, 6729 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 6771 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:05,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 6771 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 01:21:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14502 states. [2022-02-09 01:21:05,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14502 to 9327. [2022-02-09 01:21:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9327 states, 9326 states have (on average 3.1082993780827795) internal successors, (28988), 9326 states have internal predecessors, (28988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 28988 transitions. [2022-02-09 01:21:05,495 INFO L78 Accepts]: Start accepts. Automaton has 9327 states and 28988 transitions. Word has length 74 [2022-02-09 01:21:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:05,495 INFO L470 AbstractCegarLoop]: Abstraction has 9327 states and 28988 transitions. [2022-02-09 01:21:05,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 9327 states and 28988 transitions. [2022-02-09 01:21:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:05,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:05,509 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:05,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:05,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:05,709 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1936259769, now seen corresponding path program 85 times [2022-02-09 01:21:05,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:05,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620322228] [2022-02-09 01:21:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:05,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:05,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:05,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620322228] [2022-02-09 01:21:05,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620322228] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:05,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923833877] [2022-02-09 01:21:05,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:21:05,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:05,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:05,890 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:05,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-09 01:21:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:05,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:05,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:06,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:06,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923833877] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:06,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:06,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:21:06,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200399261] [2022-02-09 01:21:06,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:06,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:21:06,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:21:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:21:06,780 INFO L87 Difference]: Start difference. First operand 9327 states and 28988 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:08,582 INFO L93 Difference]: Finished difference Result 12315 states and 37330 transitions. [2022-02-09 01:21:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-09 01:21:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:08,609 INFO L225 Difference]: With dead ends: 12315 [2022-02-09 01:21:08,609 INFO L226 Difference]: Without dead ends: 12213 [2022-02-09 01:21:08,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=839, Invalid=6643, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 01:21:08,610 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 711 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:08,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 3339 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:21:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12213 states. [2022-02-09 01:21:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12213 to 9387. [2022-02-09 01:21:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9387 states, 9386 states have (on average 3.1038781163434903) internal successors, (29133), 9386 states have internal predecessors, (29133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 29133 transitions. [2022-02-09 01:21:08,827 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 29133 transitions. Word has length 74 [2022-02-09 01:21:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:08,827 INFO L470 AbstractCegarLoop]: Abstraction has 9387 states and 29133 transitions. [2022-02-09 01:21:08,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 29133 transitions. [2022-02-09 01:21:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:08,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:08,845 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:08,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:09,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:09,058 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash -525424113, now seen corresponding path program 86 times [2022-02-09 01:21:09,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:09,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130597592] [2022-02-09 01:21:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:09,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:09,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:09,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130597592] [2022-02-09 01:21:09,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130597592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:09,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65759368] [2022-02-09 01:21:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:21:09,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:09,269 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:09,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-09 01:21:09,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:21:09,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:09,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:09,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:09,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:10,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65759368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:10,430 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:10,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:21:10,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064067110] [2022-02-09 01:21:10,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:10,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:21:10,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:21:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:21:10,431 INFO L87 Difference]: Start difference. First operand 9387 states and 29133 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:13,066 INFO L93 Difference]: Finished difference Result 12716 states and 38283 transitions. [2022-02-09 01:21:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-09 01:21:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:13,093 INFO L225 Difference]: With dead ends: 12716 [2022-02-09 01:21:13,093 INFO L226 Difference]: Without dead ends: 12563 [2022-02-09 01:21:13,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3667 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1364, Invalid=10408, Unknown=0, NotChecked=0, Total=11772 [2022-02-09 01:21:13,095 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1050 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:13,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 3222 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:21:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12563 states. [2022-02-09 01:21:13,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12563 to 9643. [2022-02-09 01:21:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9643 states, 9642 states have (on average 3.1114913918274216) internal successors, (30001), 9642 states have internal predecessors, (30001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9643 states to 9643 states and 30001 transitions. [2022-02-09 01:21:13,294 INFO L78 Accepts]: Start accepts. Automaton has 9643 states and 30001 transitions. Word has length 74 [2022-02-09 01:21:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:13,294 INFO L470 AbstractCegarLoop]: Abstraction has 9643 states and 30001 transitions. [2022-02-09 01:21:13,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 9643 states and 30001 transitions. [2022-02-09 01:21:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:13,310 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:13,310 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:13,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:13,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:13,510 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:13,511 INFO L85 PathProgramCache]: Analyzing trace with hash -504706727, now seen corresponding path program 87 times [2022-02-09 01:21:13,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:13,511 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410543675] [2022-02-09 01:21:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:13,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:13,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:13,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410543675] [2022-02-09 01:21:13,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410543675] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:13,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813475214] [2022-02-09 01:21:13,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:21:13,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:13,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:13,706 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:13,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-09 01:21:13,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:21:13,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:13,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:13,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:14,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:14,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813475214] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:14,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:14,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:21:14,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743490378] [2022-02-09 01:21:14,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:14,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:21:14,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:21:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:21:14,778 INFO L87 Difference]: Start difference. First operand 9643 states and 30001 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:17,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:17,768 INFO L93 Difference]: Finished difference Result 12717 states and 38338 transitions. [2022-02-09 01:21:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-09 01:21:17,768 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:17,795 INFO L225 Difference]: With dead ends: 12717 [2022-02-09 01:21:17,795 INFO L226 Difference]: Without dead ends: 12615 [2022-02-09 01:21:17,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1118, Invalid=8194, Unknown=0, NotChecked=0, Total=9312 [2022-02-09 01:21:17,796 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 802 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:17,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 3251 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:21:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12615 states. [2022-02-09 01:21:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12615 to 9659. [2022-02-09 01:21:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9659 states, 9658 states have (on average 3.111720853178712) internal successors, (30053), 9658 states have internal predecessors, (30053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9659 states to 9659 states and 30053 transitions. [2022-02-09 01:21:17,995 INFO L78 Accepts]: Start accepts. Automaton has 9659 states and 30053 transitions. Word has length 74 [2022-02-09 01:21:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:17,995 INFO L470 AbstractCegarLoop]: Abstraction has 9659 states and 30053 transitions. [2022-02-09 01:21:17,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:17,995 INFO L276 IsEmpty]: Start isEmpty. Operand 9659 states and 30053 transitions. [2022-02-09 01:21:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:18,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:18,010 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:18,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:18,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-09 01:21:18,212 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:18,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1149207489, now seen corresponding path program 88 times [2022-02-09 01:21:18,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:18,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470253645] [2022-02-09 01:21:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:18,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:18,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:18,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470253645] [2022-02-09 01:21:18,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470253645] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:18,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001287724] [2022-02-09 01:21:18,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:21:18,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:18,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:18,417 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:18,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-09 01:21:18,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:21:18,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:18,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:18,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:18,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:19,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001287724] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:19,496 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:19,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:21:19,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675216131] [2022-02-09 01:21:19,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:19,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:21:19,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:19,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:21:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:21:19,498 INFO L87 Difference]: Start difference. First operand 9659 states and 30053 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:30,225 INFO L93 Difference]: Finished difference Result 18049 states and 52586 transitions. [2022-02-09 01:21:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-02-09 01:21:30,225 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:30,258 INFO L225 Difference]: With dead ends: 18049 [2022-02-09 01:21:30,258 INFO L226 Difference]: Without dead ends: 17530 [2022-02-09 01:21:30,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24679 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=8239, Invalid=55517, Unknown=0, NotChecked=0, Total=63756 [2022-02-09 01:21:30,262 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 1957 mSDsluCounter, 8793 mSDsCounter, 0 mSdLazyCounter, 4468 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 8728 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 4468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:30,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 8728 Invalid, 4780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 4468 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 01:21:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17530 states. [2022-02-09 01:21:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17530 to 10051. [2022-02-09 01:21:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10051 states, 10050 states have (on average 3.119900497512438) internal successors, (31355), 10050 states have internal predecessors, (31355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10051 states to 10051 states and 31355 transitions. [2022-02-09 01:21:30,462 INFO L78 Accepts]: Start accepts. Automaton has 10051 states and 31355 transitions. Word has length 74 [2022-02-09 01:21:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:30,462 INFO L470 AbstractCegarLoop]: Abstraction has 10051 states and 31355 transitions. [2022-02-09 01:21:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 10051 states and 31355 transitions. [2022-02-09 01:21:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:30,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:30,478 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:30,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:30,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:30,679 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1263759537, now seen corresponding path program 89 times [2022-02-09 01:21:30,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:30,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340371509] [2022-02-09 01:21:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:30,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:30,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:30,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340371509] [2022-02-09 01:21:30,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340371509] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:30,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628858471] [2022-02-09 01:21:30,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:21:30,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:30,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:30,875 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:30,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-09 01:21:30,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:21:30,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:30,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:30,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:31,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:32,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628858471] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:32,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:32,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:21:32,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440373496] [2022-02-09 01:21:32,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:32,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:21:32,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:21:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:21:32,177 INFO L87 Difference]: Start difference. First operand 10051 states and 31355 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:37,345 INFO L93 Difference]: Finished difference Result 14599 states and 44273 transitions. [2022-02-09 01:21:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-09 01:21:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:37,375 INFO L225 Difference]: With dead ends: 14599 [2022-02-09 01:21:37,375 INFO L226 Difference]: Without dead ends: 14320 [2022-02-09 01:21:37,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6502 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1744, Invalid=17996, Unknown=0, NotChecked=0, Total=19740 [2022-02-09 01:21:37,377 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 934 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:37,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 4683 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:21:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14320 states. [2022-02-09 01:21:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14320 to 11399. [2022-02-09 01:21:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11399 states, 11398 states have (on average 3.1186173012809264) internal successors, (35546), 11398 states have internal predecessors, (35546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11399 states to 11399 states and 35546 transitions. [2022-02-09 01:21:37,604 INFO L78 Accepts]: Start accepts. Automaton has 11399 states and 35546 transitions. Word has length 74 [2022-02-09 01:21:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:37,604 INFO L470 AbstractCegarLoop]: Abstraction has 11399 states and 35546 transitions. [2022-02-09 01:21:37,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 11399 states and 35546 transitions. [2022-02-09 01:21:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:37,621 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:37,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:37,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:37,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:37,823 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash -914776021, now seen corresponding path program 90 times [2022-02-09 01:21:37,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:37,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957665970] [2022-02-09 01:21:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:37,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:38,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:38,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957665970] [2022-02-09 01:21:38,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957665970] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:38,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672811371] [2022-02-09 01:21:38,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:21:38,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:38,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:38,035 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:38,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-09 01:21:38,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:21:38,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:38,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:38,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:38,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:39,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672811371] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:39,233 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:39,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:21:39,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324511274] [2022-02-09 01:21:39,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:39,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:21:39,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:21:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:21:39,234 INFO L87 Difference]: Start difference. First operand 11399 states and 35546 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:47,780 INFO L93 Difference]: Finished difference Result 17269 states and 51859 transitions. [2022-02-09 01:21:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-02-09 01:21:47,780 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:47,811 INFO L225 Difference]: With dead ends: 17269 [2022-02-09 01:21:47,812 INFO L226 Difference]: Without dead ends: 16744 [2022-02-09 01:21:47,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14173 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3426, Invalid=35186, Unknown=0, NotChecked=0, Total=38612 [2022-02-09 01:21:47,814 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1318 mSDsluCounter, 7430 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 7515 SdHoareTripleChecker+Invalid, 4353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:47,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 7515 Invalid, 4353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 01:21:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16744 states. [2022-02-09 01:21:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16744 to 11795. [2022-02-09 01:21:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11795 states, 11794 states have (on average 3.1323554349669323) internal successors, (36943), 11794 states have internal predecessors, (36943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11795 states to 11795 states and 36943 transitions. [2022-02-09 01:21:48,070 INFO L78 Accepts]: Start accepts. Automaton has 11795 states and 36943 transitions. Word has length 74 [2022-02-09 01:21:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:48,070 INFO L470 AbstractCegarLoop]: Abstraction has 11795 states and 36943 transitions. [2022-02-09 01:21:48,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 11795 states and 36943 transitions. [2022-02-09 01:21:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:48,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:48,092 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:48,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:48,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:48,292 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:48,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1658397179, now seen corresponding path program 91 times [2022-02-09 01:21:48,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:48,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596441722] [2022-02-09 01:21:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:48,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:48,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:48,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596441722] [2022-02-09 01:21:48,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596441722] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:48,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328631535] [2022-02-09 01:21:48,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:21:48,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:48,571 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:48,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-09 01:21:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:48,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:48,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:49,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:49,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328631535] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:49,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:49,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:21:49,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588113604] [2022-02-09 01:21:49,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:49,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:21:49,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:21:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:21:49,862 INFO L87 Difference]: Start difference. First operand 11795 states and 36943 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:54,610 INFO L93 Difference]: Finished difference Result 15389 states and 46991 transitions. [2022-02-09 01:21:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-09 01:21:54,610 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:21:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:54,640 INFO L225 Difference]: With dead ends: 15389 [2022-02-09 01:21:54,640 INFO L226 Difference]: Without dead ends: 15176 [2022-02-09 01:21:54,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5529 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1507, Invalid=15785, Unknown=0, NotChecked=0, Total=17292 [2022-02-09 01:21:54,642 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 725 mSDsluCounter, 5958 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 6056 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:54,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 6056 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 01:21:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15176 states. [2022-02-09 01:21:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15176 to 12299. [2022-02-09 01:21:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12299 states, 12298 states have (on average 3.131322166205887) internal successors, (38509), 12298 states have internal predecessors, (38509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 38509 transitions. [2022-02-09 01:21:54,897 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 38509 transitions. Word has length 74 [2022-02-09 01:21:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:54,897 INFO L470 AbstractCegarLoop]: Abstraction has 12299 states and 38509 transitions. [2022-02-09 01:21:54,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 38509 transitions. [2022-02-09 01:21:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:21:54,917 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:54,917 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:54,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:55,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:55,118 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:55,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2007380695, now seen corresponding path program 92 times [2022-02-09 01:21:55,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:55,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524600486] [2022-02-09 01:21:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:55,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:55,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:55,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524600486] [2022-02-09 01:21:55,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524600486] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:55,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101658255] [2022-02-09 01:21:55,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:21:55,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:55,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:55,318 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:55,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-09 01:21:55,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:21:55,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:55,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:55,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:55,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:56,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101658255] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:56,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:56,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:21:56,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482264989] [2022-02-09 01:21:56,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:56,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:21:56,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:21:56,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:21:56,541 INFO L87 Difference]: Start difference. First operand 12299 states and 38509 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:04,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:22:04,945 INFO L93 Difference]: Finished difference Result 18546 states and 56229 transitions. [2022-02-09 01:22:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-02-09 01:22:04,945 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:22:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:22:04,982 INFO L225 Difference]: With dead ends: 18546 [2022-02-09 01:22:04,982 INFO L226 Difference]: Without dead ends: 18051 [2022-02-09 01:22:04,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12665 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3170, Invalid=31986, Unknown=0, NotChecked=0, Total=35156 [2022-02-09 01:22:04,984 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 1355 mSDsluCounter, 8016 mSDsCounter, 0 mSdLazyCounter, 4291 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:22:04,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 8096 Invalid, 4562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4291 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 01:22:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18051 states. [2022-02-09 01:22:05,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18051 to 12491. [2022-02-09 01:22:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 3.1619695756605286) internal successors, (39493), 12490 states have internal predecessors, (39493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 39493 transitions. [2022-02-09 01:22:05,226 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 39493 transitions. Word has length 74 [2022-02-09 01:22:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:22:05,226 INFO L470 AbstractCegarLoop]: Abstraction has 12491 states and 39493 transitions. [2022-02-09 01:22:05,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 39493 transitions. [2022-02-09 01:22:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:22:05,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:22:05,245 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:22:05,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-09 01:22:05,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:05,446 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:22:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:22:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1221977889, now seen corresponding path program 93 times [2022-02-09 01:22:05,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:22:05,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661346754] [2022-02-09 01:22:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:22:05,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:22:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:05,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:22:05,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661346754] [2022-02-09 01:22:05,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661346754] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:22:05,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572587656] [2022-02-09 01:22:05,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:22:05,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:05,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:22:05,641 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:22:05,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-09 01:22:05,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:22:05,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:22:05,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-09 01:22:05,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:22:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:06,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:22:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:07,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572587656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:22:07,293 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:22:07,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-02-09 01:22:07,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941937609] [2022-02-09 01:22:07,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:22:07,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-09 01:22:07,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:22:07,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-09 01:22:07,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 01:22:07,294 INFO L87 Difference]: Start difference. First operand 12491 states and 39493 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:22:13,301 INFO L93 Difference]: Finished difference Result 16670 states and 51165 transitions. [2022-02-09 01:22:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-09 01:22:13,301 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:22:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:22:13,334 INFO L225 Difference]: With dead ends: 16670 [2022-02-09 01:22:13,334 INFO L226 Difference]: Without dead ends: 16508 [2022-02-09 01:22:13,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5471 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2129, Invalid=16777, Unknown=0, NotChecked=0, Total=18906 [2022-02-09 01:22:13,336 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1318 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:22:13,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 3240 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:22:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16508 states. [2022-02-09 01:22:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16508 to 12699. [2022-02-09 01:22:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12699 states, 12698 states have (on average 3.1700267758702156) internal successors, (40253), 12698 states have internal predecessors, (40253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12699 states to 12699 states and 40253 transitions. [2022-02-09 01:22:13,609 INFO L78 Accepts]: Start accepts. Automaton has 12699 states and 40253 transitions. Word has length 74 [2022-02-09 01:22:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:22:13,609 INFO L470 AbstractCegarLoop]: Abstraction has 12699 states and 40253 transitions. [2022-02-09 01:22:13,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 12699 states and 40253 transitions. [2022-02-09 01:22:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:22:13,632 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:22:13,632 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:22:13,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-09 01:22:13,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-02-09 01:22:13,832 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:22:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:22:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash -591710751, now seen corresponding path program 94 times [2022-02-09 01:22:13,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:22:13,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254092278] [2022-02-09 01:22:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:22:13,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:22:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:14,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:22:14,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254092278] [2022-02-09 01:22:14,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254092278] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:22:14,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380194027] [2022-02-09 01:22:14,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:22:14,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:14,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:22:14,214 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:22:14,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-09 01:22:14,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:22:14,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:22:14,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:22:14,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:22:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:14,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:22:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:15,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380194027] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:22:15,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:22:15,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:22:15,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819885026] [2022-02-09 01:22:15,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:22:15,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:22:15,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:22:15,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:22:15,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:22:15,414 INFO L87 Difference]: Start difference. First operand 12699 states and 40253 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:22:26,186 INFO L93 Difference]: Finished difference Result 21395 states and 65297 transitions. [2022-02-09 01:22:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-02-09 01:22:26,186 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:22:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:22:26,231 INFO L225 Difference]: With dead ends: 21395 [2022-02-09 01:22:26,231 INFO L226 Difference]: Without dead ends: 21191 [2022-02-09 01:22:26,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18686 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4394, Invalid=43348, Unknown=0, NotChecked=0, Total=47742 [2022-02-09 01:22:26,235 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1411 mSDsluCounter, 6799 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 6954 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:22:26,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 6954 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 3802 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 01:22:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21191 states. [2022-02-09 01:22:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21191 to 14307. [2022-02-09 01:22:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14307 states, 14306 states have (on average 3.185726268698448) internal successors, (45575), 14306 states have internal predecessors, (45575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 45575 transitions. [2022-02-09 01:22:26,576 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 45575 transitions. Word has length 74 [2022-02-09 01:22:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:22:26,576 INFO L470 AbstractCegarLoop]: Abstraction has 14307 states and 45575 transitions. [2022-02-09 01:22:26,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 45575 transitions. [2022-02-09 01:22:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:22:26,599 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:22:26,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:22:26,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-02-09 01:22:26,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-09 01:22:26,800 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:22:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:22:26,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1265584007, now seen corresponding path program 95 times [2022-02-09 01:22:26,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:22:26,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053032393] [2022-02-09 01:22:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:22:26,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:22:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:27,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:22:27,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053032393] [2022-02-09 01:22:27,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053032393] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:22:27,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91540726] [2022-02-09 01:22:27,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:22:27,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:27,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:22:27,003 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:22:27,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-09 01:22:27,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:22:27,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:22:27,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:22:27,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:22:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:27,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:22:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:28,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91540726] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:22:28,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:22:28,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:22:28,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627337206] [2022-02-09 01:22:28,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:22:28,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:22:28,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:22:28,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:22:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:22:28,106 INFO L87 Difference]: Start difference. First operand 14307 states and 45575 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:22:38,391 INFO L93 Difference]: Finished difference Result 22034 states and 67223 transitions. [2022-02-09 01:22:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-02-09 01:22:38,391 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:22:38,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:22:38,438 INFO L225 Difference]: With dead ends: 22034 [2022-02-09 01:22:38,438 INFO L226 Difference]: Without dead ends: 21524 [2022-02-09 01:22:38,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18815 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=4518, Invalid=44544, Unknown=0, NotChecked=0, Total=49062 [2022-02-09 01:22:38,440 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1614 mSDsluCounter, 7176 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 7300 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:22:38,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 7300 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 3862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 01:22:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21524 states. [2022-02-09 01:22:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21524 to 14327. [2022-02-09 01:22:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14327 states, 14326 states have (on average 3.1834426916096605) internal successors, (45606), 14326 states have internal predecessors, (45606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14327 states to 14327 states and 45606 transitions. [2022-02-09 01:22:38,813 INFO L78 Accepts]: Start accepts. Automaton has 14327 states and 45606 transitions. Word has length 74 [2022-02-09 01:22:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:22:38,813 INFO L470 AbstractCegarLoop]: Abstraction has 14327 states and 45606 transitions. [2022-02-09 01:22:38,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 14327 states and 45606 transitions. [2022-02-09 01:22:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:22:38,836 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:22:38,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:22:38,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-09 01:22:39,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:39,037 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:22:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:22:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1021008305, now seen corresponding path program 96 times [2022-02-09 01:22:39,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:22:39,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514582519] [2022-02-09 01:22:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:22:39,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:22:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:39,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:22:39,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514582519] [2022-02-09 01:22:39,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514582519] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:22:39,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426359878] [2022-02-09 01:22:39,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:22:39,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:39,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:22:39,268 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:22:39,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-09 01:22:39,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:22:39,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:22:39,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:22:39,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:22:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:39,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:22:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:40,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426359878] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:22:40,256 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:22:40,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:22:40,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675065399] [2022-02-09 01:22:40,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:22:40,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:22:40,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:22:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:22:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:22:40,257 INFO L87 Difference]: Start difference. First operand 14327 states and 45606 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:43,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:22:43,152 INFO L93 Difference]: Finished difference Result 18624 states and 57947 transitions. [2022-02-09 01:22:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-09 01:22:43,152 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:22:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:22:43,193 INFO L225 Difference]: With dead ends: 18624 [2022-02-09 01:22:43,194 INFO L226 Difference]: Without dead ends: 18522 [2022-02-09 01:22:43,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3863 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1306, Invalid=10684, Unknown=0, NotChecked=0, Total=11990 [2022-02-09 01:22:43,195 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 701 mSDsluCounter, 4283 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:22:43,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 4298 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:22:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18522 states. [2022-02-09 01:22:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18522 to 14923. [2022-02-09 01:22:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 14922 states have (on average 3.185430907385069) internal successors, (47533), 14922 states have internal predecessors, (47533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 47533 transitions. [2022-02-09 01:22:43,521 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 47533 transitions. Word has length 74 [2022-02-09 01:22:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:22:43,521 INFO L470 AbstractCegarLoop]: Abstraction has 14923 states and 47533 transitions. [2022-02-09 01:22:43,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 47533 transitions. [2022-02-09 01:22:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:22:43,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:22:43,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:22:43,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-09 01:22:43,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:43,746 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:22:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:22:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1000290919, now seen corresponding path program 97 times [2022-02-09 01:22:43,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:22:43,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861810005] [2022-02-09 01:22:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:22:43,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:22:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:43,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:22:43,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861810005] [2022-02-09 01:22:43,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861810005] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:22:43,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510362679] [2022-02-09 01:22:43,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:22:43,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:43,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:22:43,924 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:22:43,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-09 01:22:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:44,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:22:44,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:22:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:44,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:22:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:44,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510362679] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:22:44,983 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:22:44,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:22:44,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569392232] [2022-02-09 01:22:44,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:22:44,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:22:44,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:22:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:22:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:22:44,985 INFO L87 Difference]: Start difference. First operand 14923 states and 47533 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:22:48,703 INFO L93 Difference]: Finished difference Result 18508 states and 57720 transitions. [2022-02-09 01:22:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-09 01:22:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:22:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:22:48,743 INFO L225 Difference]: With dead ends: 18508 [2022-02-09 01:22:48,743 INFO L226 Difference]: Without dead ends: 18406 [2022-02-09 01:22:48,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3456 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1297, Invalid=9833, Unknown=0, NotChecked=0, Total=11130 [2022-02-09 01:22:48,745 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 741 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:22:48,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3439 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:22:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18406 states. [2022-02-09 01:22:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18406 to 14951. [2022-02-09 01:22:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14951 states, 14950 states have (on average 3.184882943143813) internal successors, (47614), 14950 states have internal predecessors, (47614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 47614 transitions. [2022-02-09 01:22:49,068 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 47614 transitions. Word has length 74 [2022-02-09 01:22:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:22:49,068 INFO L470 AbstractCegarLoop]: Abstraction has 14951 states and 47614 transitions. [2022-02-09 01:22:49,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 47614 transitions. [2022-02-09 01:22:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:22:49,093 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:22:49,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:22:49,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-09 01:22:49,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-02-09 01:22:49,293 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:22:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:22:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1644791681, now seen corresponding path program 98 times [2022-02-09 01:22:49,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:22:49,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845618133] [2022-02-09 01:22:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:22:49,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:22:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:49,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:22:49,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845618133] [2022-02-09 01:22:49,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845618133] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:22:49,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957182811] [2022-02-09 01:22:49,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:22:49,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:49,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:22:49,493 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:22:49,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-09 01:22:49,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:22:49,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:22:49,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:22:49,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:22:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:50,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:22:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:50,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957182811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:22:50,538 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:22:50,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:22:50,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559936091] [2022-02-09 01:22:50,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:22:50,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:22:50,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:22:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:22:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:22:50,539 INFO L87 Difference]: Start difference. First operand 14951 states and 47614 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:01,423 INFO L93 Difference]: Finished difference Result 25325 states and 76492 transitions. [2022-02-09 01:23:01,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-02-09 01:23:01,423 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:01,481 INFO L225 Difference]: With dead ends: 25325 [2022-02-09 01:23:01,481 INFO L226 Difference]: Without dead ends: 24776 [2022-02-09 01:23:01,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27098 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=8356, Invalid=60026, Unknown=0, NotChecked=0, Total=68382 [2022-02-09 01:23:01,484 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1879 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 8652 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:01,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1879 Valid, 8652 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-09 01:23:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24776 states. [2022-02-09 01:23:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24776 to 15319. [2022-02-09 01:23:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15319 states, 15318 states have (on average 3.188014101057579) internal successors, (48834), 15318 states have internal predecessors, (48834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15319 states to 15319 states and 48834 transitions. [2022-02-09 01:23:01,813 INFO L78 Accepts]: Start accepts. Automaton has 15319 states and 48834 transitions. Word has length 74 [2022-02-09 01:23:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:01,813 INFO L470 AbstractCegarLoop]: Abstraction has 15319 states and 48834 transitions. [2022-02-09 01:23:01,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 15319 states and 48834 transitions. [2022-02-09 01:23:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:01,886 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:01,886 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:01,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:02,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:02,086 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:02,087 INFO L85 PathProgramCache]: Analyzing trace with hash 377723573, now seen corresponding path program 99 times [2022-02-09 01:23:02,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:02,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086547953] [2022-02-09 01:23:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:02,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:02,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:02,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086547953] [2022-02-09 01:23:02,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086547953] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:02,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295496061] [2022-02-09 01:23:02,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:23:02,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:02,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:02,276 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:02,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-09 01:23:02,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:23:02,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:02,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:02,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:02,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:03,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295496061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:03,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:03,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:23:03,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640121248] [2022-02-09 01:23:03,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:03,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:23:03,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:03,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:23:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:23:03,284 INFO L87 Difference]: Start difference. First operand 15319 states and 48834 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:07,215 INFO L93 Difference]: Finished difference Result 20270 states and 62885 transitions. [2022-02-09 01:23:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-09 01:23:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:07,252 INFO L225 Difference]: With dead ends: 20270 [2022-02-09 01:23:07,252 INFO L226 Difference]: Without dead ends: 19694 [2022-02-09 01:23:07,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6531 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2589, Invalid=16871, Unknown=0, NotChecked=0, Total=19460 [2022-02-09 01:23:07,253 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1539 mSDsluCounter, 4102 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:07,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 4208 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:23:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19694 states. [2022-02-09 01:23:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19694 to 15967. [2022-02-09 01:23:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15967 states, 15966 states have (on average 3.18952774646123) internal successors, (50924), 15966 states have internal predecessors, (50924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15967 states to 15967 states and 50924 transitions. [2022-02-09 01:23:07,550 INFO L78 Accepts]: Start accepts. Automaton has 15967 states and 50924 transitions. Word has length 74 [2022-02-09 01:23:07,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:07,551 INFO L470 AbstractCegarLoop]: Abstraction has 15967 states and 50924 transitions. [2022-02-09 01:23:07,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 15967 states and 50924 transitions. [2022-02-09 01:23:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:07,576 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:07,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:07,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:07,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:07,776 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1042978437, now seen corresponding path program 100 times [2022-02-09 01:23:07,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:07,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848184816] [2022-02-09 01:23:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:07,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:08,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:08,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848184816] [2022-02-09 01:23:08,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848184816] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:08,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88645363] [2022-02-09 01:23:08,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:23:08,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:08,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:08,028 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:08,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-09 01:23:08,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:23:08,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:08,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:08,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:08,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:09,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88645363] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:09,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:09,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:23:09,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340851819] [2022-02-09 01:23:09,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:09,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:23:09,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:09,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:23:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:23:09,047 INFO L87 Difference]: Start difference. First operand 15967 states and 50924 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:14,162 INFO L93 Difference]: Finished difference Result 23277 states and 71172 transitions. [2022-02-09 01:23:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-02-09 01:23:14,163 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:14,213 INFO L225 Difference]: With dead ends: 23277 [2022-02-09 01:23:14,214 INFO L226 Difference]: Without dead ends: 23073 [2022-02-09 01:23:14,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9187 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2673, Invalid=23409, Unknown=0, NotChecked=0, Total=26082 [2022-02-09 01:23:14,216 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1096 mSDsluCounter, 5656 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 5761 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:14,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 5761 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 01:23:14,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23073 states. [2022-02-09 01:23:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23073 to 16135. [2022-02-09 01:23:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16135 states, 16134 states have (on average 3.1876781951159043) internal successors, (51430), 16134 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16135 states to 16135 states and 51430 transitions. [2022-02-09 01:23:14,589 INFO L78 Accepts]: Start accepts. Automaton has 16135 states and 51430 transitions. Word has length 74 [2022-02-09 01:23:14,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:14,589 INFO L470 AbstractCegarLoop]: Abstraction has 16135 states and 51430 transitions. [2022-02-09 01:23:14,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 16135 states and 51430 transitions. [2022-02-09 01:23:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:14,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:14,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:14,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:14,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-09 01:23:14,817 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:14,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1710809265, now seen corresponding path program 101 times [2022-02-09 01:23:14,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:14,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499370979] [2022-02-09 01:23:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:14,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:15,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:15,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499370979] [2022-02-09 01:23:15,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499370979] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:15,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984297147] [2022-02-09 01:23:15,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:23:15,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:15,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:15,014 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:15,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-09 01:23:15,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:23:15,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:15,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:15,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:15,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:15,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984297147] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:15,994 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:15,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:23:15,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61354414] [2022-02-09 01:23:15,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:15,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:23:15,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:15,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:23:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:23:15,995 INFO L87 Difference]: Start difference. First operand 16135 states and 51430 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:17,292 INFO L93 Difference]: Finished difference Result 19873 states and 62108 transitions. [2022-02-09 01:23:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-09 01:23:17,292 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:17,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:17,381 INFO L225 Difference]: With dead ends: 19873 [2022-02-09 01:23:17,381 INFO L226 Difference]: Without dead ends: 19771 [2022-02-09 01:23:17,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=559, Invalid=4411, Unknown=0, NotChecked=0, Total=4970 [2022-02-09 01:23:17,382 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 496 mSDsluCounter, 3740 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:17,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 3783 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:23:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19771 states. [2022-02-09 01:23:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19771 to 16135. [2022-02-09 01:23:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16135 states, 16134 states have (on average 3.1876781951159043) internal successors, (51430), 16134 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16135 states to 16135 states and 51430 transitions. [2022-02-09 01:23:17,730 INFO L78 Accepts]: Start accepts. Automaton has 16135 states and 51430 transitions. Word has length 74 [2022-02-09 01:23:17,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:17,730 INFO L470 AbstractCegarLoop]: Abstraction has 16135 states and 51430 transitions. [2022-02-09 01:23:17,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 16135 states and 51430 transitions. [2022-02-09 01:23:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:17,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:17,754 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:17,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-02-09 01:23:17,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-09 01:23:17,955 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash 864727055, now seen corresponding path program 102 times [2022-02-09 01:23:17,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:17,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787668218] [2022-02-09 01:23:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:17,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:18,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:18,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787668218] [2022-02-09 01:23:18,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787668218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:18,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937357595] [2022-02-09 01:23:18,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:23:18,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:18,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:18,141 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:18,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-09 01:23:18,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:23:18,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:18,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:18,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:18,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:19,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937357595] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:19,196 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:19,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:23:19,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257109515] [2022-02-09 01:23:19,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:19,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:23:19,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:23:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:23:19,197 INFO L87 Difference]: Start difference. First operand 16135 states and 51430 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:21,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:21,711 INFO L93 Difference]: Finished difference Result 19924 states and 62195 transitions. [2022-02-09 01:23:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-09 01:23:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:21,759 INFO L225 Difference]: With dead ends: 19924 [2022-02-09 01:23:21,759 INFO L226 Difference]: Without dead ends: 19822 [2022-02-09 01:23:21,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1075, Invalid=8825, Unknown=0, NotChecked=0, Total=9900 [2022-02-09 01:23:21,760 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 794 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:21,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 3015 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:23:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-02-09 01:23:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 16379. [2022-02-09 01:23:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16379 states, 16378 states have (on average 3.1882403223836855) internal successors, (52217), 16378 states have internal predecessors, (52217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16379 states to 16379 states and 52217 transitions. [2022-02-09 01:23:22,115 INFO L78 Accepts]: Start accepts. Automaton has 16379 states and 52217 transitions. Word has length 74 [2022-02-09 01:23:22,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:22,115 INFO L470 AbstractCegarLoop]: Abstraction has 16379 states and 52217 transitions. [2022-02-09 01:23:22,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 16379 states and 52217 transitions. [2022-02-09 01:23:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:22,145 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:22,145 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:22,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-09 01:23:22,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:22,345 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:22,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:22,346 INFO L85 PathProgramCache]: Analyzing trace with hash 885444441, now seen corresponding path program 103 times [2022-02-09 01:23:22,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:22,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392836731] [2022-02-09 01:23:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:22,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:22,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:22,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392836731] [2022-02-09 01:23:22,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392836731] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:22,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438925568] [2022-02-09 01:23:22,524 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:23:22,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:22,526 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:22,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-09 01:23:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:22,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:22,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:23,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:23,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438925568] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:23,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:23,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:23:23,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497425179] [2022-02-09 01:23:23,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:23,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:23:23,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:23:23,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:23:23,613 INFO L87 Difference]: Start difference. First operand 16379 states and 52217 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:25,941 INFO L93 Difference]: Finished difference Result 19784 states and 61798 transitions. [2022-02-09 01:23:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-09 01:23:25,941 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:25,987 INFO L225 Difference]: With dead ends: 19784 [2022-02-09 01:23:25,988 INFO L226 Difference]: Without dead ends: 19682 [2022-02-09 01:23:25,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=858, Invalid=6282, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 01:23:25,988 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 800 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:25,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 3201 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:23:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19682 states. [2022-02-09 01:23:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 16435. [2022-02-09 01:23:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16435 states, 16434 states have (on average 3.1884507727881224) internal successors, (52399), 16434 states have internal predecessors, (52399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16435 states to 16435 states and 52399 transitions. [2022-02-09 01:23:26,388 INFO L78 Accepts]: Start accepts. Automaton has 16435 states and 52399 transitions. Word has length 74 [2022-02-09 01:23:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:26,389 INFO L470 AbstractCegarLoop]: Abstraction has 16435 states and 52399 transitions. [2022-02-09 01:23:26,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 16435 states and 52399 transitions. [2022-02-09 01:23:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:26,414 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:26,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:26,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:26,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:26,615 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 240943679, now seen corresponding path program 104 times [2022-02-09 01:23:26,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:26,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924092547] [2022-02-09 01:23:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:26,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:26,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:26,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924092547] [2022-02-09 01:23:26,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924092547] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:26,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018917762] [2022-02-09 01:23:26,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:23:26,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:26,873 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:26,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-09 01:23:26,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:23:26,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:26,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:26,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:27,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:27,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018917762] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:27,913 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:27,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:23:27,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062580807] [2022-02-09 01:23:27,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:27,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:23:27,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:27,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:23:27,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:23:27,914 INFO L87 Difference]: Start difference. First operand 16435 states and 52399 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:34,549 INFO L93 Difference]: Finished difference Result 23659 states and 72458 transitions. [2022-02-09 01:23:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-02-09 01:23:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:34,594 INFO L225 Difference]: With dead ends: 23659 [2022-02-09 01:23:34,594 INFO L226 Difference]: Without dead ends: 23173 [2022-02-09 01:23:34,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11239 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4019, Invalid=27487, Unknown=0, NotChecked=0, Total=31506 [2022-02-09 01:23:34,597 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1704 mSDsluCounter, 6104 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:34,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1704 Valid, 6094 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:23:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23173 states. [2022-02-09 01:23:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23173 to 16551. [2022-02-09 01:23:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16551 states, 16550 states have (on average 3.1865861027190334) internal successors, (52738), 16550 states have internal predecessors, (52738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16551 states to 16551 states and 52738 transitions. [2022-02-09 01:23:34,939 INFO L78 Accepts]: Start accepts. Automaton has 16551 states and 52738 transitions. Word has length 74 [2022-02-09 01:23:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:34,939 INFO L470 AbstractCegarLoop]: Abstraction has 16551 states and 52738 transitions. [2022-02-09 01:23:34,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:34,939 INFO L276 IsEmpty]: Start isEmpty. Operand 16551 states and 52738 transitions. [2022-02-09 01:23:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:34,964 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:34,965 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:34,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:35,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-02-09 01:23:35,166 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:35,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash -945326863, now seen corresponding path program 105 times [2022-02-09 01:23:35,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:35,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944216946] [2022-02-09 01:23:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:35,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:35,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:35,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944216946] [2022-02-09 01:23:35,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944216946] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:35,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637885321] [2022-02-09 01:23:35,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:23:35,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:35,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:35,370 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:35,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-09 01:23:35,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:23:35,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:35,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:35,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:35,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:36,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637885321] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:36,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:36,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:23:36,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201049769] [2022-02-09 01:23:36,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:36,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:23:36,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:23:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:23:36,573 INFO L87 Difference]: Start difference. First operand 16551 states and 52738 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:40,531 INFO L93 Difference]: Finished difference Result 21339 states and 66291 transitions. [2022-02-09 01:23:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-09 01:23:40,531 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:40,570 INFO L225 Difference]: With dead ends: 21339 [2022-02-09 01:23:40,570 INFO L226 Difference]: Without dead ends: 21186 [2022-02-09 01:23:40,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1193, Invalid=11017, Unknown=0, NotChecked=0, Total=12210 [2022-02-09 01:23:40,571 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 735 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:40,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 4627 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:23:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21186 states. [2022-02-09 01:23:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21186 to 16755. [2022-02-09 01:23:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16755 states, 16754 states have (on average 3.183418885042378) internal successors, (53335), 16754 states have internal predecessors, (53335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16755 states to 16755 states and 53335 transitions. [2022-02-09 01:23:40,877 INFO L78 Accepts]: Start accepts. Automaton has 16755 states and 53335 transitions. Word has length 74 [2022-02-09 01:23:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:40,877 INFO L470 AbstractCegarLoop]: Abstraction has 16755 states and 53335 transitions. [2022-02-09 01:23:40,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 16755 states and 53335 transitions. [2022-02-09 01:23:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:40,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:40,949 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:40,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:41,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-02-09 01:23:41,150 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash 842756923, now seen corresponding path program 106 times [2022-02-09 01:23:41,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:41,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237512642] [2022-02-09 01:23:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:41,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:41,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:41,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237512642] [2022-02-09 01:23:41,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237512642] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:41,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657305644] [2022-02-09 01:23:41,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:23:41,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:41,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:41,345 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:41,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-09 01:23:41,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:23:41,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:41,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:41,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:41,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:42,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657305644] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:42,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:42,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:23:42,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64019380] [2022-02-09 01:23:42,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:42,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:23:42,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:42,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:23:42,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:23:42,332 INFO L87 Difference]: Start difference. First operand 16755 states and 53335 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:46,180 INFO L93 Difference]: Finished difference Result 23086 states and 70945 transitions. [2022-02-09 01:23:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-09 01:23:46,181 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:46,225 INFO L225 Difference]: With dead ends: 23086 [2022-02-09 01:23:46,226 INFO L226 Difference]: Without dead ends: 22882 [2022-02-09 01:23:46,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5013 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1833, Invalid=14169, Unknown=0, NotChecked=0, Total=16002 [2022-02-09 01:23:46,227 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 924 mSDsluCounter, 5217 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 5277 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:46,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 5277 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:23:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22882 states. [2022-02-09 01:23:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22882 to 16763. [2022-02-09 01:23:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16763 states, 16762 states have (on average 3.1834506622121466) internal successors, (53361), 16762 states have internal predecessors, (53361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16763 states to 16763 states and 53361 transitions. [2022-02-09 01:23:46,630 INFO L78 Accepts]: Start accepts. Automaton has 16763 states and 53361 transitions. Word has length 74 [2022-02-09 01:23:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:46,630 INFO L470 AbstractCegarLoop]: Abstraction has 16763 states and 53361 transitions. [2022-02-09 01:23:46,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 16763 states and 53361 transitions. [2022-02-09 01:23:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:46,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:46,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:46,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-09 01:23:46,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:46,859 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 174926095, now seen corresponding path program 107 times [2022-02-09 01:23:46,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:46,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394342935] [2022-02-09 01:23:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:46,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:47,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:47,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394342935] [2022-02-09 01:23:47,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394342935] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:47,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55891076] [2022-02-09 01:23:47,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:23:47,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:47,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:47,059 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:47,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-09 01:23:47,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:23:47,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:47,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:47,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:47,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:48,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55891076] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:48,064 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:48,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:23:48,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199791984] [2022-02-09 01:23:48,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:48,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:23:48,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:23:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:23:48,066 INFO L87 Difference]: Start difference. First operand 16763 states and 53361 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:49,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:49,485 INFO L93 Difference]: Finished difference Result 20861 states and 65021 transitions. [2022-02-09 01:23:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-09 01:23:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:49,528 INFO L225 Difference]: With dead ends: 20861 [2022-02-09 01:23:49,529 INFO L226 Difference]: Without dead ends: 20759 [2022-02-09 01:23:49,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=655, Invalid=5045, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 01:23:49,529 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 619 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:49,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2767 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:23:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20759 states. [2022-02-09 01:23:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20759 to 16763. [2022-02-09 01:23:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16763 states, 16762 states have (on average 3.1834506622121466) internal successors, (53361), 16762 states have internal predecessors, (53361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16763 states to 16763 states and 53361 transitions. [2022-02-09 01:23:49,884 INFO L78 Accepts]: Start accepts. Automaton has 16763 states and 53361 transitions. Word has length 74 [2022-02-09 01:23:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:49,884 INFO L470 AbstractCegarLoop]: Abstraction has 16763 states and 53361 transitions. [2022-02-09 01:23:49,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 16763 states and 53361 transitions. [2022-02-09 01:23:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:49,910 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:49,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:49,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:50,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:50,111 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1118278021, now seen corresponding path program 108 times [2022-02-09 01:23:50,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:50,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587139370] [2022-02-09 01:23:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:50,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:50,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:50,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587139370] [2022-02-09 01:23:50,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587139370] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:50,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478907383] [2022-02-09 01:23:50,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:23:50,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:50,306 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:50,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-09 01:23:50,403 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:23:50,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:50,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:50,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:50,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:51,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478907383] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:51,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:51,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:23:51,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750719722] [2022-02-09 01:23:51,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:51,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:23:51,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:51,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:23:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1364, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:23:51,343 INFO L87 Difference]: Start difference. First operand 16763 states and 53361 transitions. Second operand has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:54,705 INFO L93 Difference]: Finished difference Result 19849 states and 61751 transitions. [2022-02-09 01:23:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-09 01:23:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:54,746 INFO L225 Difference]: With dead ends: 19849 [2022-02-09 01:23:54,746 INFO L226 Difference]: Without dead ends: 19384 [2022-02-09 01:23:54,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1968, Invalid=12312, Unknown=0, NotChecked=0, Total=14280 [2022-02-09 01:23:54,748 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1140 mSDsluCounter, 5303 mSDsCounter, 0 mSdLazyCounter, 2654 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:54,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 5318 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2654 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:23:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19384 states. [2022-02-09 01:23:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19384 to 16931. [2022-02-09 01:23:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16931 states, 16930 states have (on average 3.1819846426461904) internal successors, (53871), 16930 states have internal predecessors, (53871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16931 states to 16931 states and 53871 transitions. [2022-02-09 01:23:55,058 INFO L78 Accepts]: Start accepts. Automaton has 16931 states and 53871 transitions. Word has length 74 [2022-02-09 01:23:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:55,059 INFO L470 AbstractCegarLoop]: Abstraction has 16931 states and 53871 transitions. [2022-02-09 01:23:55,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 16931 states and 53871 transitions. [2022-02-09 01:23:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:55,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:55,085 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:55,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:55,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2022-02-09 01:23:55,285 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:55,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:55,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1496515595, now seen corresponding path program 109 times [2022-02-09 01:23:55,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:55,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272938764] [2022-02-09 01:23:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:55,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:55,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:55,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272938764] [2022-02-09 01:23:55,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272938764] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:55,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368217304] [2022-02-09 01:23:55,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:23:55,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:55,471 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:55,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-09 01:23:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:55,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:23:55,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:56,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:56,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368217304] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:56,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:56,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:23:56,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894866008] [2022-02-09 01:23:56,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:56,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:23:56,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:23:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:23:56,490 INFO L87 Difference]: Start difference. First operand 16931 states and 53871 transitions. Second operand has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:59,113 INFO L93 Difference]: Finished difference Result 19587 states and 61103 transitions. [2022-02-09 01:23:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-09 01:23:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:23:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:59,149 INFO L225 Difference]: With dead ends: 19587 [2022-02-09 01:23:59,150 INFO L226 Difference]: Without dead ends: 19434 [2022-02-09 01:23:59,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1177, Invalid=8723, Unknown=0, NotChecked=0, Total=9900 [2022-02-09 01:23:59,151 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1011 mSDsluCounter, 5185 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:59,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 5213 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:23:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19434 states. [2022-02-09 01:23:59,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19434 to 16915. [2022-02-09 01:23:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16915 states, 16914 states have (on average 3.1814473217452997) internal successors, (53811), 16914 states have internal predecessors, (53811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16915 states to 16915 states and 53811 transitions. [2022-02-09 01:23:59,451 INFO L78 Accepts]: Start accepts. Automaton has 16915 states and 53811 transitions. Word has length 74 [2022-02-09 01:23:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:59,451 INFO L470 AbstractCegarLoop]: Abstraction has 16915 states and 53811 transitions. [2022-02-09 01:23:59,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16915 states and 53811 transitions. [2022-02-09 01:23:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:23:59,479 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:59,479 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:59,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:59,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-02-09 01:23:59,679 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:59,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash 980956341, now seen corresponding path program 110 times [2022-02-09 01:23:59,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:59,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293896663] [2022-02-09 01:23:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:59,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:59,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:59,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293896663] [2022-02-09 01:23:59,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293896663] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:59,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418985745] [2022-02-09 01:23:59,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:23:59,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:59,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:59,916 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:59,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-09 01:24:00,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:24:00,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:00,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:00,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:00,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:00,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418985745] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:00,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:00,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:24:00,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678545640] [2022-02-09 01:24:00,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:00,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:24:00,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:00,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:24:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:24:00,825 INFO L87 Difference]: Start difference. First operand 16915 states and 53811 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:01,889 INFO L93 Difference]: Finished difference Result 19998 states and 62606 transitions. [2022-02-09 01:24:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 01:24:01,890 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:01,936 INFO L225 Difference]: With dead ends: 19998 [2022-02-09 01:24:01,936 INFO L226 Difference]: Without dead ends: 19692 [2022-02-09 01:24:01,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=3898, Unknown=0, NotChecked=0, Total=4422 [2022-02-09 01:24:01,937 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 517 mSDsluCounter, 2944 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:01,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 2984 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:24:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19692 states. [2022-02-09 01:24:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19692 to 16915. [2022-02-09 01:24:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16915 states, 16914 states have (on average 3.1812108312640417) internal successors, (53807), 16914 states have internal predecessors, (53807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16915 states to 16915 states and 53807 transitions. [2022-02-09 01:24:02,306 INFO L78 Accepts]: Start accepts. Automaton has 16915 states and 53807 transitions. Word has length 74 [2022-02-09 01:24:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:02,306 INFO L470 AbstractCegarLoop]: Abstraction has 16915 states and 53807 transitions. [2022-02-09 01:24:02,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 16915 states and 53807 transitions. [2022-02-09 01:24:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:02,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:02,333 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:02,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-09 01:24:02,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-02-09 01:24:02,534 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:02,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:02,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1763425597, now seen corresponding path program 111 times [2022-02-09 01:24:02,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:02,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577407576] [2022-02-09 01:24:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:02,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:02,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:02,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577407576] [2022-02-09 01:24:02,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577407576] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:02,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505970803] [2022-02-09 01:24:02,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:24:02,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:02,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:02,758 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:02,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-09 01:24:02,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:24:02,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:02,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:02,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:03,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:03,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505970803] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:03,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:03,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:24:03,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646325173] [2022-02-09 01:24:03,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:03,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:24:03,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:03,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:24:03,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:24:03,771 INFO L87 Difference]: Start difference. First operand 16915 states and 53807 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:06,371 INFO L93 Difference]: Finished difference Result 20288 states and 63408 transitions. [2022-02-09 01:24:06,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-09 01:24:06,371 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:06,415 INFO L225 Difference]: With dead ends: 20288 [2022-02-09 01:24:06,415 INFO L226 Difference]: Without dead ends: 20186 [2022-02-09 01:24:06,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2768 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1037, Invalid=8469, Unknown=0, NotChecked=0, Total=9506 [2022-02-09 01:24:06,416 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 743 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:06,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 3270 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:24:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20186 states. [2022-02-09 01:24:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20186 to 17043. [2022-02-09 01:24:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17043 states, 17042 states have (on average 3.1829010679497713) internal successors, (54243), 17042 states have internal predecessors, (54243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 54243 transitions. [2022-02-09 01:24:06,766 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 54243 transitions. Word has length 74 [2022-02-09 01:24:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:06,766 INFO L470 AbstractCegarLoop]: Abstraction has 17043 states and 54243 transitions. [2022-02-09 01:24:06,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 54243 transitions. [2022-02-09 01:24:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:06,794 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:06,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:06,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:06,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-09 01:24:06,995 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1784142983, now seen corresponding path program 112 times [2022-02-09 01:24:06,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:06,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864543340] [2022-02-09 01:24:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:06,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:07,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:07,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864543340] [2022-02-09 01:24:07,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864543340] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:07,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057753491] [2022-02-09 01:24:07,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:24:07,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:07,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:07,181 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:07,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-09 01:24:07,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:24:07,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:07,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:07,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:07,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:08,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057753491] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:08,289 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:08,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:24:08,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244033704] [2022-02-09 01:24:08,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:08,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:24:08,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:24:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:24:08,290 INFO L87 Difference]: Start difference. First operand 17043 states and 54243 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:10,825 INFO L93 Difference]: Finished difference Result 20276 states and 63379 transitions. [2022-02-09 01:24:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-09 01:24:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:10,867 INFO L225 Difference]: With dead ends: 20276 [2022-02-09 01:24:10,867 INFO L226 Difference]: Without dead ends: 20174 [2022-02-09 01:24:10,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=910, Invalid=6746, Unknown=0, NotChecked=0, Total=7656 [2022-02-09 01:24:10,868 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 739 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:10,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 3162 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:24:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20174 states. [2022-02-09 01:24:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20174 to 17099. [2022-02-09 01:24:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17099 states, 17098 states have (on average 3.1838226693180487) internal successors, (54437), 17098 states have internal predecessors, (54437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17099 states to 17099 states and 54437 transitions. [2022-02-09 01:24:11,230 INFO L78 Accepts]: Start accepts. Automaton has 17099 states and 54437 transitions. Word has length 74 [2022-02-09 01:24:11,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:11,230 INFO L470 AbstractCegarLoop]: Abstraction has 17099 states and 54437 transitions. [2022-02-09 01:24:11,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:11,230 INFO L276 IsEmpty]: Start isEmpty. Operand 17099 states and 54437 transitions. [2022-02-09 01:24:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:11,258 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:11,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:11,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:11,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:11,459 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:11,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:11,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1139642221, now seen corresponding path program 113 times [2022-02-09 01:24:11,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:11,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418667591] [2022-02-09 01:24:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:11,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:11,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:11,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418667591] [2022-02-09 01:24:11,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418667591] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:11,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717711134] [2022-02-09 01:24:11,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:24:11,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:11,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:11,662 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:11,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-09 01:24:11,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:24:11,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:11,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:11,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:12,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:12,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717711134] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:12,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:12,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:24:12,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157666665] [2022-02-09 01:24:12,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:12,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:24:12,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:24:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:24:12,740 INFO L87 Difference]: Start difference. First operand 17099 states and 54437 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:19,265 INFO L93 Difference]: Finished difference Result 24251 states and 74436 transitions. [2022-02-09 01:24:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-02-09 01:24:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:19,316 INFO L225 Difference]: With dead ends: 24251 [2022-02-09 01:24:19,316 INFO L226 Difference]: Without dead ends: 23771 [2022-02-09 01:24:19,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9955 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3705, Invalid=24351, Unknown=0, NotChecked=0, Total=28056 [2022-02-09 01:24:19,318 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1540 mSDsluCounter, 5292 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 5252 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:19,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 5252 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:24:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23771 states. [2022-02-09 01:24:19,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23771 to 16883. [2022-02-09 01:24:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16883 states, 16882 states have (on average 3.1874777869920625) internal successors, (53811), 16882 states have internal predecessors, (53811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16883 states to 16883 states and 53811 transitions. [2022-02-09 01:24:19,746 INFO L78 Accepts]: Start accepts. Automaton has 16883 states and 53811 transitions. Word has length 74 [2022-02-09 01:24:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:19,747 INFO L470 AbstractCegarLoop]: Abstraction has 16883 states and 53811 transitions. [2022-02-09 01:24:19,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 16883 states and 53811 transitions. [2022-02-09 01:24:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:19,774 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:19,774 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:19,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:19,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:19,975 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -46628321, now seen corresponding path program 114 times [2022-02-09 01:24:19,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:19,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579263422] [2022-02-09 01:24:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:19,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:20,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:20,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579263422] [2022-02-09 01:24:20,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579263422] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:20,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384670101] [2022-02-09 01:24:20,226 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:24:20,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:20,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:20,227 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:20,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-09 01:24:20,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:24:20,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:20,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:20,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:20,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:21,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384670101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:21,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:21,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:24:21,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385152122] [2022-02-09 01:24:21,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:21,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:24:21,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:24:21,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1322, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:24:21,419 INFO L87 Difference]: Start difference. First operand 16883 states and 53811 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:25,526 INFO L93 Difference]: Finished difference Result 21999 states and 68374 transitions. [2022-02-09 01:24:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-09 01:24:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:25,593 INFO L225 Difference]: With dead ends: 21999 [2022-02-09 01:24:25,593 INFO L226 Difference]: Without dead ends: 21846 [2022-02-09 01:24:25,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4076 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1363, Invalid=11747, Unknown=0, NotChecked=0, Total=13110 [2022-02-09 01:24:25,594 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 824 mSDsluCounter, 4473 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:25,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 4461 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:24:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21846 states. [2022-02-09 01:24:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21846 to 17143. [2022-02-09 01:24:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17143 states, 17142 states have (on average 3.183409170458523) internal successors, (54570), 17142 states have internal predecessors, (54570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17143 states to 17143 states and 54570 transitions. [2022-02-09 01:24:26,001 INFO L78 Accepts]: Start accepts. Automaton has 17143 states and 54570 transitions. Word has length 74 [2022-02-09 01:24:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:26,001 INFO L470 AbstractCegarLoop]: Abstraction has 17143 states and 54570 transitions. [2022-02-09 01:24:26,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:26,001 INFO L276 IsEmpty]: Start isEmpty. Operand 17143 states and 54570 transitions. [2022-02-09 01:24:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:26,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:26,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:26,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:26,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-02-09 01:24:26,227 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash -862016753, now seen corresponding path program 115 times [2022-02-09 01:24:26,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:26,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525933073] [2022-02-09 01:24:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:26,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:26,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:26,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525933073] [2022-02-09 01:24:26,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525933073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:26,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98399515] [2022-02-09 01:24:26,438 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:24:26,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:26,439 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:26,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-09 01:24:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:26,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:27,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:27,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98399515] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:27,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:27,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:24:27,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222835740] [2022-02-09 01:24:27,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:27,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:24:27,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:24:27,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:24:27,833 INFO L87 Difference]: Start difference. First operand 17143 states and 54570 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:33,326 INFO L93 Difference]: Finished difference Result 22927 states and 71150 transitions. [2022-02-09 01:24:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-09 01:24:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:33,372 INFO L225 Difference]: With dead ends: 22927 [2022-02-09 01:24:33,372 INFO L226 Difference]: Without dead ends: 22774 [2022-02-09 01:24:33,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5799 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1839, Invalid=15983, Unknown=0, NotChecked=0, Total=17822 [2022-02-09 01:24:33,374 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 933 mSDsluCounter, 4421 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4446 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:33,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 4446 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:24:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2022-02-09 01:24:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 17343. [2022-02-09 01:24:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17343 states, 17342 states have (on average 3.183715834390497) internal successors, (55212), 17342 states have internal predecessors, (55212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 55212 transitions. [2022-02-09 01:24:33,750 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 55212 transitions. Word has length 74 [2022-02-09 01:24:33,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:33,750 INFO L470 AbstractCegarLoop]: Abstraction has 17343 states and 55212 transitions. [2022-02-09 01:24:33,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 55212 transitions. [2022-02-09 01:24:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:33,777 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:33,777 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:33,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:33,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:33,981 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1132809821, now seen corresponding path program 116 times [2022-02-09 01:24:33,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:33,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797449450] [2022-02-09 01:24:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:33,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:34,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:34,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797449450] [2022-02-09 01:24:34,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797449450] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:34,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752539002] [2022-02-09 01:24:34,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:24:34,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:34,177 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:34,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-09 01:24:34,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:24:34,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:34,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:34,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:34,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:35,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752539002] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:35,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:35,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:24:35,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97905375] [2022-02-09 01:24:35,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:35,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:24:35,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:24:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:24:35,223 INFO L87 Difference]: Start difference. First operand 17343 states and 55212 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:41,244 INFO L93 Difference]: Finished difference Result 21563 states and 67036 transitions. [2022-02-09 01:24:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-02-09 01:24:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:41,288 INFO L225 Difference]: With dead ends: 21563 [2022-02-09 01:24:41,289 INFO L226 Difference]: Without dead ends: 21023 [2022-02-09 01:24:41,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9906 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3621, Invalid=24101, Unknown=0, NotChecked=0, Total=27722 [2022-02-09 01:24:41,291 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 1257 mSDsluCounter, 5751 mSDsCounter, 0 mSdLazyCounter, 3068 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 5758 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 3068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:41,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 5758 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 3068 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 01:24:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21023 states. [2022-02-09 01:24:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21023 to 17739. [2022-02-09 01:24:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17739 states, 17738 states have (on average 3.1841808546623067) internal successors, (56481), 17738 states have internal predecessors, (56481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17739 states to 17739 states and 56481 transitions. [2022-02-09 01:24:41,650 INFO L78 Accepts]: Start accepts. Automaton has 17739 states and 56481 transitions. Word has length 74 [2022-02-09 01:24:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:41,650 INFO L470 AbstractCegarLoop]: Abstraction has 17739 states and 56481 transitions. [2022-02-09 01:24:41,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:41,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17739 states and 56481 transitions. [2022-02-09 01:24:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:41,763 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:41,764 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:41,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-09 01:24:41,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:41,964 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1741455465, now seen corresponding path program 117 times [2022-02-09 01:24:41,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:41,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900199903] [2022-02-09 01:24:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:41,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:42,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:42,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900199903] [2022-02-09 01:24:42,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900199903] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:42,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009747914] [2022-02-09 01:24:42,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:24:42,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:42,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:42,156 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:42,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-09 01:24:42,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:24:42,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:42,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:42,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:42,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:43,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009747914] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:43,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:43,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-09 01:24:43,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103706474] [2022-02-09 01:24:43,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:43,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:24:43,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:24:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:24:43,225 INFO L87 Difference]: Start difference. First operand 17739 states and 56481 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:49,210 INFO L93 Difference]: Finished difference Result 24815 states and 76200 transitions. [2022-02-09 01:24:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-09 01:24:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:49,270 INFO L225 Difference]: With dead ends: 24815 [2022-02-09 01:24:49,270 INFO L226 Difference]: Without dead ends: 24611 [2022-02-09 01:24:49,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9386 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3154, Invalid=23252, Unknown=0, NotChecked=0, Total=26406 [2022-02-09 01:24:49,273 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1025 mSDsluCounter, 5154 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:49,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 5191 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:24:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24611 states. [2022-02-09 01:24:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24611 to 17763. [2022-02-09 01:24:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17763 states, 17762 states have (on average 3.1851705888976465) internal successors, (56575), 17762 states have internal predecessors, (56575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17763 states to 17763 states and 56575 transitions. [2022-02-09 01:24:49,773 INFO L78 Accepts]: Start accepts. Automaton has 17763 states and 56575 transitions. Word has length 74 [2022-02-09 01:24:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:49,773 INFO L470 AbstractCegarLoop]: Abstraction has 17763 states and 56575 transitions. [2022-02-09 01:24:49,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 17763 states and 56575 transitions. [2022-02-09 01:24:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:49,803 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:49,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:49,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:50,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-02-09 01:24:50,004 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1073624637, now seen corresponding path program 118 times [2022-02-09 01:24:50,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:50,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856733130] [2022-02-09 01:24:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:50,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:50,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:50,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856733130] [2022-02-09 01:24:50,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856733130] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:50,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350321239] [2022-02-09 01:24:50,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:24:50,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:50,191 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:50,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-09 01:24:50,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:24:50,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:50,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:50,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:50,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:51,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350321239] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:51,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:51,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-09 01:24:51,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581576832] [2022-02-09 01:24:51,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:51,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:24:51,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:24:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:24:51,182 INFO L87 Difference]: Start difference. First operand 17763 states and 56575 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:54,166 INFO L93 Difference]: Finished difference Result 21933 states and 68409 transitions. [2022-02-09 01:24:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-09 01:24:54,167 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-09 01:24:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:54,215 INFO L225 Difference]: With dead ends: 21933 [2022-02-09 01:24:54,215 INFO L226 Difference]: Without dead ends: 21831 [2022-02-09 01:24:54,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1158, Invalid=9554, Unknown=0, NotChecked=0, Total=10712 [2022-02-09 01:24:54,217 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 738 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:54,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2991 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:24:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21831 states. [2022-02-09 01:24:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21831 to 17815. [2022-02-09 01:24:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17815 states, 17814 states have (on average 3.184349388121702) internal successors, (56726), 17814 states have internal predecessors, (56726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17815 states to 17815 states and 56726 transitions. [2022-02-09 01:24:54,633 INFO L78 Accepts]: Start accepts. Automaton has 17815 states and 56726 transitions. Word has length 74 [2022-02-09 01:24:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:54,633 INFO L470 AbstractCegarLoop]: Abstraction has 17815 states and 56726 transitions. [2022-02-09 01:24:54,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17815 states and 56726 transitions. [2022-02-09 01:24:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-09 01:24:54,660 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:54,661 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:54,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:54,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:54,861 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:54,862 INFO L85 PathProgramCache]: Analyzing trace with hash -597817053, now seen corresponding path program 119 times [2022-02-09 01:24:54,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:54,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703827435] [2022-02-09 01:24:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:54,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:55,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:55,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703827435] [2022-02-09 01:24:55,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703827435] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:55,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297876493] [2022-02-09 01:24:55,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:24:55,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:55,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:55,043 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:55,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-09 01:24:55,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:24:55,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:24:55,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:24:55,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:55,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:56,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297876493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:56,053 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:56,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-09 01:24:56,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689648540] [2022-02-09 01:24:56,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:56,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-09 01:24:56,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-09 01:24:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:24:56,054 INFO L87 Difference]: Start difference. First operand 17815 states and 56726 transitions. Second operand has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-09 01:24:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 01:24:56,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=250, Invalid=1730, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 01:24:56,287 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 42 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:56,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1131 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:24:56,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-09 01:24:56,296 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-09 01:24:56,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:56,324 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-09 01:24:56,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:56,490 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (17815states) and FLOYD_HOARE automaton (currently 12 states, 40 states before enhancement),while ReachableStatesComputation was computing reachable states (111 states constructed, input type IntersectNwa). [2022-02-09 01:24:56,491 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-09 01:24:56,491 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-09 01:24:56,493 INFO L732 BasicCegarLoop]: Path program histogram: [119, 1, 1, 1] [2022-02-09 01:24:56,494 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 01:24:56,494 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 01:24:56,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 01:24:56 BasicIcfg [2022-02-09 01:24:56,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 01:24:56,496 INFO L158 Benchmark]: Toolchain (without parser) took 736259.67ms. Allocated memory was 177.2MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 121.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 776.2MB. Max. memory is 8.0GB. [2022-02-09 01:24:56,496 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 01:24:56,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.79ms. Allocated memory was 177.2MB in the beginning and 235.9MB in the end (delta: 58.7MB). Free memory was 121.4MB in the beginning and 207.6MB in the end (delta: -86.2MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-02-09 01:24:56,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.04ms. Allocated memory is still 235.9MB. Free memory was 207.6MB in the beginning and 206.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 01:24:56,496 INFO L158 Benchmark]: Boogie Preprocessor took 33.25ms. Allocated memory is still 235.9MB. Free memory was 206.0MB in the beginning and 204.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 01:24:56,496 INFO L158 Benchmark]: RCFGBuilder took 433.52ms. Allocated memory is still 235.9MB. Free memory was 204.5MB in the beginning and 190.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-09 01:24:56,496 INFO L158 Benchmark]: TraceAbstraction took 735475.59ms. Allocated memory was 235.9MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 190.3MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 785.1MB. Max. memory is 8.0GB. [2022-02-09 01:24:56,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 277.79ms. Allocated memory was 177.2MB in the beginning and 235.9MB in the end (delta: 58.7MB). Free memory was 121.4MB in the beginning and 207.6MB in the end (delta: -86.2MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.04ms. Allocated memory is still 235.9MB. Free memory was 207.6MB in the beginning and 206.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.25ms. Allocated memory is still 235.9MB. Free memory was 206.0MB in the beginning and 204.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 433.52ms. Allocated memory is still 235.9MB. Free memory was 204.5MB in the beginning and 190.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 735475.59ms. Allocated memory was 235.9MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 190.3MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 785.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (17815states) and FLOYD_HOARE automaton (currently 12 states, 40 states before enhancement),while ReachableStatesComputation was computing reachable states (111 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17815states) and FLOYD_HOARE automaton (currently 12 states, 40 states before enhancement),while ReachableStatesComputation was computing reachable states (111 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17815states) and FLOYD_HOARE automaton (currently 12 states, 40 states before enhancement),while ReachableStatesComputation was computing reachable states (111 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 735.3s, OverallIterations: 122, TraceHistogramMax: 2, PathProgramHistogramMax: 119, EmptinessCheckTime: 1.5s, AutomataDifference: 539.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127949 SdHoareTripleChecker+Valid, 105.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127949 mSDsluCounter, 535736 SdHoareTripleChecker+Invalid, 88.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 532741 mSDsCounter, 19480 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273601 IncrementalHoareTripleChecker+Invalid, 293081 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19480 mSolverCounterUnsat, 29253 mSDtfsCounter, 273601 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30142 GetRequests, 14678 SyntacticMatches, 230 SemanticMatches, 15234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811628 ImplicationChecksByTransitivity, 472.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17815occurred in iteration=121, InterpolantAutomatonStates: 12925, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.2s AutomataMinimizationTime, 121 MinimizatonAttempts, 363661 StatesRemovedByMinimization, 120 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 141.6s InterpolantComputationTime, 17474 NumberOfCodeBlocks, 17354 NumberOfCodeBlocksAsserted, 381 NumberOfCheckSat, 25787 ConstructedInterpolants, 0 QuantifiedInterpolants, 219932 SizeOfPredicates, 1601 NumberOfNonLiveVariables, 18832 ConjunctsInSsa, 2878 ConjunctsInUnsatCore, 362 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2157 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown