/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-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:44:50,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:44:50,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:44:51,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:44:51,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:44:51,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:44:51,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:44:51,054 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 [2022-03-03 17:44:51,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:44:51,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:44:51,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:44:51,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:44:51,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:44:51,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:44:51,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:44:51,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:44:51,081 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:44:51,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:44:51,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:44:51,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:44:51,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:44:51,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:44:51,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:44:51,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:44:51,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:44:51,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:44:51,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:44:51,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:44:51,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:44:51,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:44:51,084 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:44:51,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:44:51,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:44:51,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:44:51,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:44:51,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:44:51,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:44:51,304 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:44:51,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-03-03 17:44:51,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b4c275e/91c2cff1d47c427cb26e84768f8c2428/FLAG71db41848 [2022-03-03 17:44:51,743 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:44:51,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-03-03 17:44:51,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b4c275e/91c2cff1d47c427cb26e84768f8c2428/FLAG71db41848 [2022-03-03 17:44:51,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b4c275e/91c2cff1d47c427cb26e84768f8c2428 [2022-03-03 17:44:51,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:44:51,768 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:44:51,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:44:51,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:44:51,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:44:51,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:44:51" (1/1) ... [2022-03-03 17:44:51,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469b630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:51, skipping insertion in model container [2022-03-03 17:44:51,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:44:51" (1/1) ... [2022-03-03 17:44:51,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:44:51,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:44:51,954 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-simple-queue.wvr.c[2438,2451] [2022-03-03 17:44:51,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:44:51,971 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:44:51,992 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-simple-queue.wvr.c[2438,2451] [2022-03-03 17:44:51,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:44:52,003 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:44:52,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52 WrapperNode [2022-03-03 17:44:52,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:44:52,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:44:52,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:44:52,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:44:52,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,037 INFO L137 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 128 [2022-03-03 17:44:52,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:44:52,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:44:52,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:44:52,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:44:52,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:44:52,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:44:52,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:44:52,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:44:52,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (1/1) ... [2022-03-03 17:44:52,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:44:52,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:52,084 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) [2022-03-03 17:44:52,091 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 [2022-03-03 17:44:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:44:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:44:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:44:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:44:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:44:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:44:52,111 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:44:52,162 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:44:52,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:44:52,411 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:44:52,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:44:52,483 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-03 17:44:52,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:44:52 BoogieIcfgContainer [2022-03-03 17:44:52,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:44:52,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:44:52,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:44:52,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:44:52,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:44:51" (1/3) ... [2022-03-03 17:44:52,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3676b5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:44:52, skipping insertion in model container [2022-03-03 17:44:52,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:44:52" (2/3) ... [2022-03-03 17:44:52,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3676b5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:44:52, skipping insertion in model container [2022-03-03 17:44:52,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:44:52" (3/3) ... [2022-03-03 17:44:52,494 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-03-03 17:44:52,497 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:44:52,498 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:44:52,498 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:44:52,498 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:44:52,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,541 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,547 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,547 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,547 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,554 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:44:52,556 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:44:52,587 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:44:52,594 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:44:52,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:44:52,605 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 118 places, 120 transitions, 256 flow [2022-03-03 17:44:52,659 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-03 17:44:52,673 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:52,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:52,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -571534812, now seen corresponding path program 1 times [2022-03-03 17:44:52,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:52,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837709379] [2022-03-03 17:44:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:52,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:52,885 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:52,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837709379] [2022-03-03 17:44:52,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837709379] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:44:52,885 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:44:52,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:44:52,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347901047] [2022-03-03 17:44:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:44:52,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:44:52,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:44:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:44:52,917 INFO L87 Difference]: Start difference. First operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 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 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:52,958 INFO L93 Difference]: Finished difference Result 335 states and 742 transitions. [2022-03-03 17:44:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:44:52,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-03-03 17:44:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:53,017 INFO L225 Difference]: With dead ends: 335 [2022-03-03 17:44:53,017 INFO L226 Difference]: Without dead ends: 332 [2022-03-03 17:44:53,019 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 [2022-03-03 17:44:53,021 INFO L933 BasicCegarLoop]: 97 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, 97 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 [2022-03-03 17:44:53,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:44:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-03-03 17:44:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-03-03 17:44:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.2326283987915407) internal successors, (739), 331 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 739 transitions. [2022-03-03 17:44:53,081 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 739 transitions. Word has length 85 [2022-03-03 17:44:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:53,081 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 739 transitions. [2022-03-03 17:44:53,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 739 transitions. [2022-03-03 17:44:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-03 17:44:53,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:53,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:53,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:44:53,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash -839991221, now seen corresponding path program 1 times [2022-03-03 17:44:53,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:53,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199216695] [2022-03-03 17:44:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:53,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:53,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199216695] [2022-03-03 17:44:53,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199216695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:44:53,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:44:53,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:44:53,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442263381] [2022-03-03 17:44:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:44:53,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:44:53,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:44:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:44:53,302 INFO L87 Difference]: Start difference. First operand 332 states and 739 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:53,376 INFO L93 Difference]: Finished difference Result 555 states and 1326 transitions. [2022-03-03 17:44:53,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:44:53,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-03-03 17:44:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:53,381 INFO L225 Difference]: With dead ends: 555 [2022-03-03 17:44:53,381 INFO L226 Difference]: Without dead ends: 425 [2022-03-03 17:44:53,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:44:53,382 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 16 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:53,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 306 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:44:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-03 17:44:53,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 363. [2022-03-03 17:44:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.270718232044199) internal successors, (822), 362 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 822 transitions. [2022-03-03 17:44:53,406 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 822 transitions. Word has length 87 [2022-03-03 17:44:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:53,408 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 822 transitions. [2022-03-03 17:44:53,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 822 transitions. [2022-03-03 17:44:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-03 17:44:53,410 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:53,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:53,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:44:53,411 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1523956765, now seen corresponding path program 1 times [2022-03-03 17:44:53,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:53,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495021577] [2022-03-03 17:44:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:53,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:53,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:53,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495021577] [2022-03-03 17:44:53,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495021577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:44:53,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:44:53,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:44:53,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967354516] [2022-03-03 17:44:53,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:44:53,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:44:53,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:44:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:44:53,543 INFO L87 Difference]: Start difference. First operand 363 states and 822 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:53,570 INFO L93 Difference]: Finished difference Result 498 states and 1124 transitions. [2022-03-03 17:44:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:44:53,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-03-03 17:44:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:53,573 INFO L225 Difference]: With dead ends: 498 [2022-03-03 17:44:53,573 INFO L226 Difference]: Without dead ends: 417 [2022-03-03 17:44:53,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:44:53,579 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:53,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 147 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:44:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-03-03 17:44:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-03-03 17:44:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 2.2716346153846154) internal successors, (945), 416 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 945 transitions. [2022-03-03 17:44:53,593 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 945 transitions. Word has length 90 [2022-03-03 17:44:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:53,595 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 945 transitions. [2022-03-03 17:44:53,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 945 transitions. [2022-03-03 17:44:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-03 17:44:53,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:53,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:53,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:44:53,597 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash 764156185, now seen corresponding path program 1 times [2022-03-03 17:44:53,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:53,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023332574] [2022-03-03 17:44:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:53,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:44:53,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:53,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023332574] [2022-03-03 17:44:53,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023332574] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:44:53,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:44:53,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:44:53,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141051263] [2022-03-03 17:44:53,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:44:53,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:44:53,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:53,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:44:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:44:53,710 INFO L87 Difference]: Start difference. First operand 417 states and 945 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:53,797 INFO L93 Difference]: Finished difference Result 486 states and 1066 transitions. [2022-03-03 17:44:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:44:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-03-03 17:44:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:53,800 INFO L225 Difference]: With dead ends: 486 [2022-03-03 17:44:53,800 INFO L226 Difference]: Without dead ends: 423 [2022-03-03 17:44:53,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:44:53,809 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 226 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:53,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 267 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:44:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-03 17:44:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2022-03-03 17:44:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.2685851318944845) internal successors, (946), 417 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 946 transitions. [2022-03-03 17:44:53,820 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 946 transitions. Word has length 93 [2022-03-03 17:44:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:53,820 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 946 transitions. [2022-03-03 17:44:53,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 946 transitions. [2022-03-03 17:44:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:44:53,822 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:53,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:53,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:44:53,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1391817806, now seen corresponding path program 1 times [2022-03-03 17:44:53,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:53,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352993781] [2022-03-03 17:44:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:54,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:54,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352993781] [2022-03-03 17:44:54,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352993781] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:54,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630344210] [2022-03-03 17:44:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:54,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:54,566 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) [2022-03-03 17:44:54,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:44:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:54,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-03 17:44:54,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:55,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:44:55,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:44:55,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:44:55,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:44:55,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:44:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:55,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:55,910 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_68 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_68) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-03-03 17:44:56,650 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:56,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-03-03 17:44:56,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:56,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 170 [2022-03-03 17:44:56,668 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:56,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 152 [2022-03-03 17:44:56,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-03-03 17:44:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-03 17:44:57,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630344210] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:57,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:57,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 55 [2022-03-03 17:44:57,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95767497] [2022-03-03 17:44:57,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:57,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-03 17:44:57,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-03 17:44:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2642, Unknown=9, NotChecked=104, Total=2970 [2022-03-03 17:44:57,416 INFO L87 Difference]: Start difference. First operand 418 states and 946 transitions. Second operand has 55 states, 55 states have (on average 4.345454545454546) internal successors, (239), 55 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:01,225 INFO L93 Difference]: Finished difference Result 2793 states and 7009 transitions. [2022-03-03 17:45:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:45:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.345454545454546) internal successors, (239), 55 states have internal predecessors, (239), 0 states have call successors, (0), 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 100 [2022-03-03 17:45:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:01,238 INFO L225 Difference]: With dead ends: 2793 [2022-03-03 17:45:01,238 INFO L226 Difference]: Without dead ends: 2757 [2022-03-03 17:45:01,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 168 SyntacticMatches, 5 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1309, Invalid=6872, Unknown=13, NotChecked=178, Total=8372 [2022-03-03 17:45:01,240 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 2477 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:01,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2477 Valid, 3391 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 923 Invalid, 0 Unknown, 594 Unchecked, 0.6s Time] [2022-03-03 17:45:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-03-03 17:45:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 781. [2022-03-03 17:45:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 2.5294871794871794) internal successors, (1973), 780 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1973 transitions. [2022-03-03 17:45:01,277 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1973 transitions. Word has length 100 [2022-03-03 17:45:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:01,277 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 1973 transitions. [2022-03-03 17:45:01,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.345454545454546) internal successors, (239), 55 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1973 transitions. [2022-03-03 17:45:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:45:01,279 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:01,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:01,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:01,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:01,488 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash -161344104, now seen corresponding path program 2 times [2022-03-03 17:45:01,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:01,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502436391] [2022-03-03 17:45:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:01,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:01,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:01,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502436391] [2022-03-03 17:45:01,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502436391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:01,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196763376] [2022-03-03 17:45:01,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:45:01,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:01,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:01,932 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) [2022-03-03 17:45:01,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:45:02,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:45:02,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:02,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-03 17:45:02,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:02,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:02,334 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:02,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:02,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:45:02,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:02,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:45:02,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:45:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:02,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:03,045 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_97 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_97) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-03-03 17:45:03,676 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:03,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-03-03 17:45:03,686 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:03,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 100 [2022-03-03 17:45:03,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-03-03 17:45:03,700 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:03,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 55 [2022-03-03 17:45:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-03 17:45:04,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196763376] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:04,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:04,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 54 [2022-03-03 17:45:04,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422114015] [2022-03-03 17:45:04,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:04,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-03 17:45:04,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-03 17:45:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2523, Unknown=8, NotChecked=102, Total=2862 [2022-03-03 17:45:04,691 INFO L87 Difference]: Start difference. First operand 781 states and 1973 transitions. Second operand has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:06,454 INFO L93 Difference]: Finished difference Result 1622 states and 4236 transitions. [2022-03-03 17:45:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:45:06,455 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 0 states have call successors, (0), 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 100 [2022-03-03 17:45:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:06,460 INFO L225 Difference]: With dead ends: 1622 [2022-03-03 17:45:06,460 INFO L226 Difference]: Without dead ends: 1492 [2022-03-03 17:45:06,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=884, Invalid=4962, Unknown=10, NotChecked=150, Total=6006 [2022-03-03 17:45:06,461 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 1060 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 759 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:06,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 1902 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 506 Invalid, 0 Unknown, 759 Unchecked, 0.3s Time] [2022-03-03 17:45:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-03-03 17:45:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 996. [2022-03-03 17:45:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 2.577889447236181) internal successors, (2565), 995 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2565 transitions. [2022-03-03 17:45:06,480 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2565 transitions. Word has length 100 [2022-03-03 17:45:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:06,481 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 2565 transitions. [2022-03-03 17:45:06,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2565 transitions. [2022-03-03 17:45:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-03 17:45:06,483 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:06,483 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:06,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-03 17:45:06,695 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,SelfDestructingSolverStorable5 [2022-03-03 17:45:06,696 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash 205024512, now seen corresponding path program 3 times [2022-03-03 17:45:06,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:06,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985057748] [2022-03-03 17:45:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:06,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:45:06,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:06,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985057748] [2022-03-03 17:45:06,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985057748] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:06,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544374465] [2022-03-03 17:45:06,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:45:06,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:06,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:06,754 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) [2022-03-03 17:45:06,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:45:06,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:45:06,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:06,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:45:06,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:07,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:45:07,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:07,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:45:07,528 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:45:07,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:45:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:45:07,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:08,774 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:08,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-03-03 17:45:08,783 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:08,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 100 [2022-03-03 17:45:08,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-03-03 17:45:08,798 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:08,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 55 [2022-03-03 17:45:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:45:09,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544374465] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:09,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:09,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 21, 21] total 39 [2022-03-03 17:45:09,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645811786] [2022-03-03 17:45:09,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:09,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:45:09,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:45:09,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1316, Unknown=38, NotChecked=0, Total=1482 [2022-03-03 17:45:09,360 INFO L87 Difference]: Start difference. First operand 996 states and 2565 transitions. Second operand has 39 states, 39 states have (on average 6.538461538461538) internal successors, (255), 39 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:10,111 INFO L93 Difference]: Finished difference Result 3138 states and 8154 transitions. [2022-03-03 17:45:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:45:10,111 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.538461538461538) internal successors, (255), 39 states have internal predecessors, (255), 0 states have call successors, (0), 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 103 [2022-03-03 17:45:10,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:10,123 INFO L225 Difference]: With dead ends: 3138 [2022-03-03 17:45:10,123 INFO L226 Difference]: Without dead ends: 3086 [2022-03-03 17:45:10,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=582, Invalid=3285, Unknown=39, NotChecked=0, Total=3906 [2022-03-03 17:45:10,124 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1036 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:10,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 2277 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 293 Invalid, 0 Unknown, 387 Unchecked, 0.1s Time] [2022-03-03 17:45:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2022-03-03 17:45:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2049. [2022-03-03 17:45:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 2.67138671875) internal successors, (5471), 2048 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 5471 transitions. [2022-03-03 17:45:10,184 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 5471 transitions. Word has length 103 [2022-03-03 17:45:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:10,184 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 5471 transitions. [2022-03-03 17:45:10,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.538461538461538) internal successors, (255), 39 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 5471 transitions. [2022-03-03 17:45:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-03 17:45:10,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:10,189 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:10,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:10,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:10,403 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1265215916, now seen corresponding path program 4 times [2022-03-03 17:45:10,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:10,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568624170] [2022-03-03 17:45:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:10,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:45:10,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:10,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568624170] [2022-03-03 17:45:10,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568624170] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:10,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071540087] [2022-03-03 17:45:10,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:45:10,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:10,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:10,461 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) [2022-03-03 17:45:10,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:45:10,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:45:10,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:10,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:45:10,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:10,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:11,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071540087] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:11,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:11,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 21 [2022-03-03 17:45:11,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960108692] [2022-03-03 17:45:11,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:11,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:45:11,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:45:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:45:11,445 INFO L87 Difference]: Start difference. First operand 2049 states and 5471 transitions. Second operand has 21 states, 21 states have (on average 10.80952380952381) internal successors, (227), 21 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:11,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:11,800 INFO L93 Difference]: Finished difference Result 2742 states and 6843 transitions. [2022-03-03 17:45:11,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:45:11,801 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.80952380952381) internal successors, (227), 21 states have internal predecessors, (227), 0 states have call successors, (0), 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 103 [2022-03-03 17:45:11,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:11,806 INFO L225 Difference]: With dead ends: 2742 [2022-03-03 17:45:11,806 INFO L226 Difference]: Without dead ends: 1693 [2022-03-03 17:45:11,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=818, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:45:11,807 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 889 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:11,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 1004 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:45:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2022-03-03 17:45:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1024. [2022-03-03 17:45:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1023 states have (on average 2.4271749755620724) internal successors, (2483), 1023 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 2483 transitions. [2022-03-03 17:45:11,830 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 2483 transitions. Word has length 103 [2022-03-03 17:45:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:11,830 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 2483 transitions. [2022-03-03 17:45:11,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.80952380952381) internal successors, (227), 21 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 2483 transitions. [2022-03-03 17:45:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-03 17:45:11,832 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:11,832 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:11,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:12,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:12,049 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1557416788, now seen corresponding path program 5 times [2022-03-03 17:45:12,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:12,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959602014] [2022-03-03 17:45:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:45:12,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:12,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959602014] [2022-03-03 17:45:12,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959602014] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:12,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69874520] [2022-03-03 17:45:12,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:45:12,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:12,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:12,116 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) [2022-03-03 17:45:12,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:45:12,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:45:12,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:45:12,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:45:12,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:45:12,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69874520] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:12,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:12,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:45:12,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375499909] [2022-03-03 17:45:12,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:12,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:45:12,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:45:12,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:45:12,582 INFO L87 Difference]: Start difference. First operand 1024 states and 2483 transitions. Second operand has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:12,727 INFO L93 Difference]: Finished difference Result 887 states and 2111 transitions. [2022-03-03 17:45:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:45:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 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 103 [2022-03-03 17:45:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:12,730 INFO L225 Difference]: With dead ends: 887 [2022-03-03 17:45:12,730 INFO L226 Difference]: Without dead ends: 770 [2022-03-03 17:45:12,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:45:12,731 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 406 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:12,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 798 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:45:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-03-03 17:45:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 765. [2022-03-03 17:45:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 2.4489528795811517) internal successors, (1871), 764 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1871 transitions. [2022-03-03 17:45:12,743 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1871 transitions. Word has length 103 [2022-03-03 17:45:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:12,743 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1871 transitions. [2022-03-03 17:45:12,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1871 transitions. [2022-03-03 17:45:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-03 17:45:12,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:12,745 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:12,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:12,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:12,962 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1676131039, now seen corresponding path program 6 times [2022-03-03 17:45:12,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:12,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587050407] [2022-03-03 17:45:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:13,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:13,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587050407] [2022-03-03 17:45:13,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587050407] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:13,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948519347] [2022-03-03 17:45:13,644 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:45:13,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:13,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:13,646 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) [2022-03-03 17:45:13,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:45:13,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:45:13,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:13,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:45:13,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:14,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:45:14,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:14,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:14,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:45:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:14,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:15,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:15,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-03-03 17:45:15,355 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:45:15,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 300 treesize of output 275 [2022-03-03 17:45:15,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:45:15,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 180 [2022-03-03 17:45:15,376 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-03 17:45:15,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 244 treesize of output 196 [2022-03-03 17:45:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:15,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948519347] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:15,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:15,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 21] total 55 [2022-03-03 17:45:15,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357164366] [2022-03-03 17:45:15,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:15,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-03 17:45:15,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-03 17:45:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=2414, Unknown=36, NotChecked=0, Total=2970 [2022-03-03 17:45:15,847 INFO L87 Difference]: Start difference. First operand 765 states and 1871 transitions. Second operand has 55 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:18,100 INFO L93 Difference]: Finished difference Result 2494 states and 6290 transitions. [2022-03-03 17:45:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:45:18,101 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 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 107 [2022-03-03 17:45:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:18,107 INFO L225 Difference]: With dead ends: 2494 [2022-03-03 17:45:18,107 INFO L226 Difference]: Without dead ends: 2093 [2022-03-03 17:45:18,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1459, Invalid=6487, Unknown=64, NotChecked=0, Total=8010 [2022-03-03 17:45:18,109 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 905 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 523 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:18,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 2214 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 700 Invalid, 0 Unknown, 523 Unchecked, 0.3s Time] [2022-03-03 17:45:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2022-03-03 17:45:18,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 849. [2022-03-03 17:45:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.390330188679245) internal successors, (2027), 848 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2027 transitions. [2022-03-03 17:45:18,127 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2027 transitions. Word has length 107 [2022-03-03 17:45:18,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:18,127 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2027 transitions. [2022-03-03 17:45:18,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:18,128 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2027 transitions. [2022-03-03 17:45:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-03 17:45:18,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:18,130 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:18,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:18,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:18,347 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 570372965, now seen corresponding path program 7 times [2022-03-03 17:45:18,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:18,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195425056] [2022-03-03 17:45:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:18,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:18,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:18,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195425056] [2022-03-03 17:45:18,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195425056] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:18,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819270288] [2022-03-03 17:45:18,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:45:18,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:18,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:18,894 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) [2022-03-03 17:45:18,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:45:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:18,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-03 17:45:18,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:18,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:19,162 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:19,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:19,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:45:19,962 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:45:19,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:45:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:19,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:20,053 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_235 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_235) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2022-03-03 17:45:20,088 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:20,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-03-03 17:45:20,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-03-03 17:45:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-03 17:45:21,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819270288] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:21,174 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:21,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 54 [2022-03-03 17:45:21,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475070173] [2022-03-03 17:45:21,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:21,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-03 17:45:21,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-03 17:45:21,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2518, Unknown=1, NotChecked=102, Total=2862 [2022-03-03 17:45:21,175 INFO L87 Difference]: Start difference. First operand 849 states and 2027 transitions. Second operand has 54 states, 54 states have (on average 4.611111111111111) internal successors, (249), 54 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:22,997 INFO L93 Difference]: Finished difference Result 3432 states and 8817 transitions. [2022-03-03 17:45:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:45:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.611111111111111) internal successors, (249), 54 states have internal predecessors, (249), 0 states have call successors, (0), 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 107 [2022-03-03 17:45:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:23,007 INFO L225 Difference]: With dead ends: 3432 [2022-03-03 17:45:23,007 INFO L226 Difference]: Without dead ends: 2850 [2022-03-03 17:45:23,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1024, Invalid=6289, Unknown=1, NotChecked=168, Total=7482 [2022-03-03 17:45:23,009 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1381 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:23,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 2902 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 390 Unchecked, 0.5s Time] [2022-03-03 17:45:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2022-03-03 17:45:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 853. [2022-03-03 17:45:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.402582159624413) internal successors, (2047), 852 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2047 transitions. [2022-03-03 17:45:23,032 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2047 transitions. Word has length 107 [2022-03-03 17:45:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:23,032 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 2047 transitions. [2022-03-03 17:45:23,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.611111111111111) internal successors, (249), 54 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2047 transitions. [2022-03-03 17:45:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-03 17:45:23,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:23,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:23,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-03 17:45:23,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:23,251 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1977634385, now seen corresponding path program 8 times [2022-03-03 17:45:23,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:23,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884861564] [2022-03-03 17:45:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:23,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:23,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884861564] [2022-03-03 17:45:23,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884861564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:23,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970658315] [2022-03-03 17:45:23,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:45:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:23,674 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) [2022-03-03 17:45:23,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:45:23,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:45:23,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:23,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-03 17:45:23,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:23,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:24,009 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:24,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:24,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:45:24,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:24,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:45:24,916 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:45:24,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:45:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:24,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:25,036 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_268 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_268) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-03-03 17:45:26,000 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:26,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2022-03-03 17:45:26,007 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:26,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 104 [2022-03-03 17:45:26,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 49 [2022-03-03 17:45:26,027 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:26,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2022-03-03 17:45:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-03-03 17:45:27,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970658315] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:27,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:27,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 66 [2022-03-03 17:45:27,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801403057] [2022-03-03 17:45:27,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:27,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-03 17:45:27,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:27,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-03 17:45:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=3856, Unknown=7, NotChecked=126, Total=4290 [2022-03-03 17:45:27,585 INFO L87 Difference]: Start difference. First operand 853 states and 2047 transitions. Second operand has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:30,174 INFO L93 Difference]: Finished difference Result 1853 states and 4669 transitions. [2022-03-03 17:45:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:45:30,175 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 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 113 [2022-03-03 17:45:30,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:30,196 INFO L225 Difference]: With dead ends: 1853 [2022-03-03 17:45:30,197 INFO L226 Difference]: Without dead ends: 1723 [2022-03-03 17:45:30,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 189 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1149, Invalid=7967, Unknown=8, NotChecked=188, Total=9312 [2022-03-03 17:45:30,199 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 2025 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:30,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 3191 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1098 Invalid, 0 Unknown, 806 Unchecked, 0.5s Time] [2022-03-03 17:45:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2022-03-03 17:45:30,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1031. [2022-03-03 17:45:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 2.4349514563106798) internal successors, (2508), 1030 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2508 transitions. [2022-03-03 17:45:30,216 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2508 transitions. Word has length 113 [2022-03-03 17:45:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:30,216 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 2508 transitions. [2022-03-03 17:45:30,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2508 transitions. [2022-03-03 17:45:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-03 17:45:30,219 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:30,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:30,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:30,437 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,SelfDestructingSolverStorable11 [2022-03-03 17:45:30,437 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:30,438 INFO L85 PathProgramCache]: Analyzing trace with hash 561755483, now seen corresponding path program 9 times [2022-03-03 17:45:30,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:30,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225164569] [2022-03-03 17:45:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:30,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:31,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:31,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225164569] [2022-03-03 17:45:31,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225164569] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:31,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713368330] [2022-03-03 17:45:31,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:45:31,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:31,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:31,043 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) [2022-03-03 17:45:31,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:45:31,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:45:31,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:31,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-03 17:45:31,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:31,603 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:45:31,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:45:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:45:31,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:31,685 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:45:31,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:45:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:45:32,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713368330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:32,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:32,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 41 [2022-03-03 17:45:32,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761896058] [2022-03-03 17:45:32,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:32,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:45:32,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:45:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:45:32,042 INFO L87 Difference]: Start difference. First operand 1031 states and 2508 transitions. Second operand has 41 states, 41 states have (on average 5.658536585365853) internal successors, (232), 41 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:34,830 INFO L93 Difference]: Finished difference Result 2498 states and 6137 transitions. [2022-03-03 17:45:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:45:34,831 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.658536585365853) internal successors, (232), 41 states have internal predecessors, (232), 0 states have call successors, (0), 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 113 [2022-03-03 17:45:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:34,838 INFO L225 Difference]: With dead ends: 2498 [2022-03-03 17:45:34,838 INFO L226 Difference]: Without dead ends: 1909 [2022-03-03 17:45:34,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1190, Invalid=4816, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:45:34,839 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1976 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:34,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1976 Valid, 3301 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1047 Invalid, 0 Unknown, 18 Unchecked, 0.5s Time] [2022-03-03 17:45:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2022-03-03 17:45:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1145. [2022-03-03 17:45:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1144 states have (on average 2.4283216783216783) internal successors, (2778), 1144 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 2778 transitions. [2022-03-03 17:45:34,859 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 2778 transitions. Word has length 113 [2022-03-03 17:45:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:34,859 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 2778 transitions. [2022-03-03 17:45:34,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.658536585365853) internal successors, (232), 41 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 2778 transitions. [2022-03-03 17:45:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-03 17:45:34,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:34,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:34,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:35,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 17:45:35,080 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:35,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1201808707, now seen corresponding path program 10 times [2022-03-03 17:45:35,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:35,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365334634] [2022-03-03 17:45:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:35,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:35,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365334634] [2022-03-03 17:45:35,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365334634] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:35,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989366657] [2022-03-03 17:45:35,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:45:35,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:35,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:35,460 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) [2022-03-03 17:45:35,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:45:35,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:45:35,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:35,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-03 17:45:35,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:36,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:45:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:36,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:36,215 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:45:36,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:45:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:36,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989366657] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:36,860 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:36,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 45 [2022-03-03 17:45:36,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966121911] [2022-03-03 17:45:36,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:36,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 17:45:36,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:36,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 17:45:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:45:36,862 INFO L87 Difference]: Start difference. First operand 1145 states and 2778 transitions. Second operand has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:38,786 INFO L93 Difference]: Finished difference Result 3699 states and 9237 transitions. [2022-03-03 17:45:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:45:38,786 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 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 113 [2022-03-03 17:45:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:38,792 INFO L225 Difference]: With dead ends: 3699 [2022-03-03 17:45:38,792 INFO L226 Difference]: Without dead ends: 2885 [2022-03-03 17:45:38,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2291 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1454, Invalid=7476, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:45:38,793 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1692 mSDsluCounter, 3319 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:38,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 3192 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:45:38,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-03-03 17:45:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 942. [2022-03-03 17:45:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.4112646121147714) internal successors, (2269), 941 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2269 transitions. [2022-03-03 17:45:38,822 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2269 transitions. Word has length 113 [2022-03-03 17:45:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:38,822 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2269 transitions. [2022-03-03 17:45:38,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:38,823 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2269 transitions. [2022-03-03 17:45:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-03 17:45:38,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:38,824 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:38,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:39,040 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,SelfDestructingSolverStorable13 [2022-03-03 17:45:39,040 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1464522753, now seen corresponding path program 11 times [2022-03-03 17:45:39,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:39,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807146077] [2022-03-03 17:45:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:45:39,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:39,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807146077] [2022-03-03 17:45:39,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807146077] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:39,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305883922] [2022-03-03 17:45:39,084 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:45:39,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:39,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:39,088 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) [2022-03-03 17:45:39,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:45:39,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:45:39,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:39,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:45:39,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:45:39,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:45:39,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305883922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:39,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:39,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-03-03 17:45:39,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930135996] [2022-03-03 17:45:39,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:39,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 17:45:39,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 17:45:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-03 17:45:39,588 INFO L87 Difference]: Start difference. First operand 942 states and 2269 transitions. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:39,627 INFO L93 Difference]: Finished difference Result 1911 states and 4760 transitions. [2022-03-03 17:45:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:45:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 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 116 [2022-03-03 17:45:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:39,631 INFO L225 Difference]: With dead ends: 1911 [2022-03-03 17:45:39,631 INFO L226 Difference]: Without dead ends: 1557 [2022-03-03 17:45:39,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:45:39,632 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 356 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:39,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 377 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:45:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-03-03 17:45:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1139. [2022-03-03 17:45:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5984182776801408) internal successors, (2957), 1138 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2957 transitions. [2022-03-03 17:45:39,649 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2957 transitions. Word has length 116 [2022-03-03 17:45:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:39,650 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2957 transitions. [2022-03-03 17:45:39,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2957 transitions. [2022-03-03 17:45:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-03 17:45:39,651 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:39,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:39,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:39,867 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,SelfDestructingSolverStorable14 [2022-03-03 17:45:39,868 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1169480554, now seen corresponding path program 12 times [2022-03-03 17:45:39,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:39,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188084171] [2022-03-03 17:45:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:40,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:40,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188084171] [2022-03-03 17:45:40,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188084171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:40,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649027740] [2022-03-03 17:45:40,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:45:40,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:40,593 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) [2022-03-03 17:45:40,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:45:40,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:45:40,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:40,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-03 17:45:40,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:40,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:40,795 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:40,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:41,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:45:41,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:45:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-03 17:45:41,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:41,181 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_386 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_386) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-03-03 17:45:41,208 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:41,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-03-03 17:45:41,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-03-03 17:45:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 4 not checked. [2022-03-03 17:45:41,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649027740] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:41,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:41,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 37 [2022-03-03 17:45:41,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674312054] [2022-03-03 17:45:41,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:41,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:45:41,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:45:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1167, Unknown=1, NotChecked=68, Total=1332 [2022-03-03 17:45:41,602 INFO L87 Difference]: Start difference. First operand 1139 states and 2957 transitions. Second operand has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:43,558 INFO L93 Difference]: Finished difference Result 2987 states and 7807 transitions. [2022-03-03 17:45:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:45:43,558 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 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 117 [2022-03-03 17:45:43,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:43,564 INFO L225 Difference]: With dead ends: 2987 [2022-03-03 17:45:43,564 INFO L226 Difference]: Without dead ends: 2838 [2022-03-03 17:45:43,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=745, Invalid=3680, Unknown=1, NotChecked=130, Total=4556 [2022-03-03 17:45:43,565 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 1143 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:43,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1802 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 784 Invalid, 0 Unknown, 144 Unchecked, 0.3s Time] [2022-03-03 17:45:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2022-03-03 17:45:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 1017. [2022-03-03 17:45:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 2.5118110236220472) internal successors, (2552), 1016 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2552 transitions. [2022-03-03 17:45:43,590 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2552 transitions. Word has length 117 [2022-03-03 17:45:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:43,591 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2552 transitions. [2022-03-03 17:45:43,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2552 transitions. [2022-03-03 17:45:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-03 17:45:43,592 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:43,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:43,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:43,799 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,SelfDestructingSolverStorable15 [2022-03-03 17:45:43,799 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:43,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -604479388, now seen corresponding path program 13 times [2022-03-03 17:45:43,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:43,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261174799] [2022-03-03 17:45:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:44,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:44,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261174799] [2022-03-03 17:45:44,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261174799] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:44,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513935385] [2022-03-03 17:45:44,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:45:44,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:44,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:44,426 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) [2022-03-03 17:45:44,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:45:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:44,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-03 17:45:44,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:45,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:45:45,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:45:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:45,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:45,643 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_419 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-03-03 17:45:45,670 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:45,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:45:45,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:45:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-03-03 17:45:46,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513935385] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:46,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:46,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 68 [2022-03-03 17:45:46,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315229718] [2022-03-03 17:45:46,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:46,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-03-03 17:45:46,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-03-03 17:45:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=4126, Unknown=1, NotChecked=130, Total=4556 [2022-03-03 17:45:46,937 INFO L87 Difference]: Start difference. First operand 1017 states and 2552 transitions. Second operand has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:53,397 INFO L93 Difference]: Finished difference Result 12039 states and 32138 transitions. [2022-03-03 17:45:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-03 17:45:53,398 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 states have internal predecessors, (298), 0 states have call successors, (0), 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 120 [2022-03-03 17:45:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:53,419 INFO L225 Difference]: With dead ends: 12039 [2022-03-03 17:45:53,419 INFO L226 Difference]: Without dead ends: 10238 [2022-03-03 17:45:53,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 6455 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2641, Invalid=22168, Unknown=1, NotChecked=312, Total=25122 [2022-03-03 17:45:53,421 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 3746 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 605 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:53,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 7002 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2840 Invalid, 0 Unknown, 605 Unchecked, 1.2s Time] [2022-03-03 17:45:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10238 states. [2022-03-03 17:45:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10238 to 2854. [2022-03-03 17:45:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2854 states, 2853 states have (on average 2.734665264633719) internal successors, (7802), 2853 states have internal predecessors, (7802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 7802 transitions. [2022-03-03 17:45:53,531 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 7802 transitions. Word has length 120 [2022-03-03 17:45:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:53,531 INFO L470 AbstractCegarLoop]: Abstraction has 2854 states and 7802 transitions. [2022-03-03 17:45:53,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 7802 transitions. [2022-03-03 17:45:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-03 17:45:53,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:53,536 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:53,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:53,752 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,SelfDestructingSolverStorable16 [2022-03-03 17:45:53,752 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1573544996, now seen corresponding path program 14 times [2022-03-03 17:45:53,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:53,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102108764] [2022-03-03 17:45:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:53,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:54,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:54,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102108764] [2022-03-03 17:45:54,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102108764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:54,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114341165] [2022-03-03 17:45:54,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:45:54,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:54,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:54,535 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) [2022-03-03 17:45:54,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:45:54,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:45:54,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:54,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-03 17:45:54,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:54,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:54,809 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:54,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:55,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:45:55,842 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:45:55,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:45:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:55,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:55,966 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_453 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_453) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-03-03 17:45:55,992 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:55,992 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:45:55,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:45:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-03-03 17:45:57,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114341165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:57,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:57,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 66 [2022-03-03 17:45:57,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337670161] [2022-03-03 17:45:57,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:57,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-03 17:45:57,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:57,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-03 17:45:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3838, Unknown=1, NotChecked=126, Total=4290 [2022-03-03 17:45:57,363 INFO L87 Difference]: Start difference. First operand 2854 states and 7802 transitions. Second operand has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:00,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:00,699 INFO L93 Difference]: Finished difference Result 6507 states and 17204 transitions. [2022-03-03 17:46:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:46:00,699 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 states have internal predecessors, (282), 0 states have call successors, (0), 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 120 [2022-03-03 17:46:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:00,733 INFO L225 Difference]: With dead ends: 6507 [2022-03-03 17:46:00,733 INFO L226 Difference]: Without dead ends: 6243 [2022-03-03 17:46:00,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3053 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1525, Invalid=12041, Unknown=10, NotChecked=230, Total=13806 [2022-03-03 17:46:00,734 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 1617 mSDsluCounter, 6405 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 6204 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 515 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:00,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 6204 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1453 Invalid, 0 Unknown, 515 Unchecked, 0.6s Time] [2022-03-03 17:46:00,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6243 states. [2022-03-03 17:46:00,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6243 to 2970. [2022-03-03 17:46:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2969 states have (on average 2.7443583698214886) internal successors, (8148), 2969 states have internal predecessors, (8148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 8148 transitions. [2022-03-03 17:46:00,791 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 8148 transitions. Word has length 120 [2022-03-03 17:46:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:00,791 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 8148 transitions. [2022-03-03 17:46:00,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 8148 transitions. [2022-03-03 17:46:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-03 17:46:00,796 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:00,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:00,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:01,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:01,017 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 654844462, now seen corresponding path program 15 times [2022-03-03 17:46:01,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:01,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011709702] [2022-03-03 17:46:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:01,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:01,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011709702] [2022-03-03 17:46:01,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011709702] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:01,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865988040] [2022-03-03 17:46:01,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:46:01,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:01,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:01,617 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) [2022-03-03 17:46:01,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:46:01,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:46:01,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:01,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-03 17:46:01,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:01,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:46:01,911 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:46:01,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:46:02,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:46:02,431 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:46:02,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:46:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:02,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:02,536 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_487) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-03-03 17:46:02,557 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:02,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:46:02,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:46:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 2 not checked. [2022-03-03 17:46:03,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865988040] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:03,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:03,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 16] total 40 [2022-03-03 17:46:03,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950931658] [2022-03-03 17:46:03,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:03,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:46:03,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:46:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1366, Unknown=1, NotChecked=74, Total=1560 [2022-03-03 17:46:03,092 INFO L87 Difference]: Start difference. First operand 2970 states and 8148 transitions. Second operand has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:04,932 INFO L93 Difference]: Finished difference Result 10487 states and 28918 transitions. [2022-03-03 17:46:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:46:04,932 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 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 120 [2022-03-03 17:46:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:04,949 INFO L225 Difference]: With dead ends: 10487 [2022-03-03 17:46:04,949 INFO L226 Difference]: Without dead ends: 9631 [2022-03-03 17:46:04,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 225 SyntacticMatches, 6 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=824, Invalid=5821, Unknown=1, NotChecked=160, Total=6806 [2022-03-03 17:46:04,950 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 1204 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:04,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 2569 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 999 Invalid, 0 Unknown, 513 Unchecked, 0.4s Time] [2022-03-03 17:46:04,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2022-03-03 17:46:05,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 2188. [2022-03-03 17:46:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.7736625514403292) internal successors, (6066), 2187 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6066 transitions. [2022-03-03 17:46:05,030 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6066 transitions. Word has length 120 [2022-03-03 17:46:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:05,030 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6066 transitions. [2022-03-03 17:46:05,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6066 transitions. [2022-03-03 17:46:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-03 17:46:05,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:05,034 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:05,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:05,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:05,251 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1491316526, now seen corresponding path program 16 times [2022-03-03 17:46:05,251 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:05,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313211004] [2022-03-03 17:46:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:05,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:06,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:06,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313211004] [2022-03-03 17:46:06,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313211004] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:06,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662715831] [2022-03-03 17:46:06,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:46:06,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:06,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:06,033 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) [2022-03-03 17:46:06,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:46:06,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:46:06,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:06,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:46:06,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:46:07,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:46:07,345 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:46:07,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:46:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:07,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:07,496 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_520 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_520) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-03-03 17:46:07,522 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:07,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:46:07,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:46:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-03-03 17:46:09,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662715831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:09,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:09,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 74 [2022-03-03 17:46:09,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231602947] [2022-03-03 17:46:09,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:09,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-03-03 17:46:09,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:09,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-03-03 17:46:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=4891, Unknown=1, NotChecked=142, Total=5402 [2022-03-03 17:46:09,507 INFO L87 Difference]: Start difference. First operand 2188 states and 6066 transitions. Second operand has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:18,515 INFO L93 Difference]: Finished difference Result 14888 states and 41225 transitions. [2022-03-03 17:46:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:46:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 states have internal predecessors, (310), 0 states have call successors, (0), 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 126 [2022-03-03 17:46:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:18,544 INFO L225 Difference]: With dead ends: 14888 [2022-03-03 17:46:18,544 INFO L226 Difference]: Without dead ends: 14878 [2022-03-03 17:46:18,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 206 SyntacticMatches, 7 SemanticMatches, 152 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 5691 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=3272, Invalid=19980, Unknown=8, NotChecked=302, Total=23562 [2022-03-03 17:46:18,545 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 2870 mSDsluCounter, 11633 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 11302 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 928 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:18,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 11302 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2364 Invalid, 0 Unknown, 928 Unchecked, 1.1s Time] [2022-03-03 17:46:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2022-03-03 17:46:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 4272. [2022-03-03 17:46:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4271 states have (on average 2.9370170920159215) internal successors, (12544), 4271 states have internal predecessors, (12544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 12544 transitions. [2022-03-03 17:46:18,684 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 12544 transitions. Word has length 126 [2022-03-03 17:46:18,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:18,684 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 12544 transitions. [2022-03-03 17:46:18,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:18,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 12544 transitions. [2022-03-03 17:46:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-03 17:46:18,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:18,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:18,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:18,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:18,909 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash -327907100, now seen corresponding path program 17 times [2022-03-03 17:46:18,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:18,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150140254] [2022-03-03 17:46:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:19,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:19,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150140254] [2022-03-03 17:46:19,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150140254] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:19,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278446344] [2022-03-03 17:46:19,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:46:19,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:19,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:19,466 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) [2022-03-03 17:46:19,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:46:19,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:46:19,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:19,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-03 17:46:19,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:19,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:46:19,779 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:46:19,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:46:20,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:46:20,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:46:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:20,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:21,089 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:21,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:46:21,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:46:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:22,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278446344] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:22,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:22,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 74 [2022-03-03 17:46:22,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397953533] [2022-03-03 17:46:22,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:22,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-03-03 17:46:22,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-03-03 17:46:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=5016, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:46:22,952 INFO L87 Difference]: Start difference. First operand 4272 states and 12544 transitions. Second operand has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:37,150 INFO L93 Difference]: Finished difference Result 31139 states and 87632 transitions. [2022-03-03 17:46:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-03-03 17:46:37,151 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 0 states have call successors, (0), 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 126 [2022-03-03 17:46:37,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:37,210 INFO L225 Difference]: With dead ends: 31139 [2022-03-03 17:46:37,210 INFO L226 Difference]: Without dead ends: 25597 [2022-03-03 17:46:37,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 212 SyntacticMatches, 11 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20292 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=8182, Invalid=57606, Unknown=4, NotChecked=0, Total=65792 [2022-03-03 17:46:37,213 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 4728 mSDsluCounter, 17851 mSDsCounter, 0 mSdLazyCounter, 5769 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 16444 SdHoareTripleChecker+Invalid, 7751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1612 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:37,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 16444 Invalid, 7751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 5769 Invalid, 0 Unknown, 1612 Unchecked, 2.4s Time] [2022-03-03 17:46:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25597 states. [2022-03-03 17:46:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25597 to 7898. [2022-03-03 17:46:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7898 states, 7897 states have (on average 3.071039635304546) internal successors, (24252), 7897 states have internal predecessors, (24252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 24252 transitions. [2022-03-03 17:46:37,564 INFO L78 Accepts]: Start accepts. Automaton has 7898 states and 24252 transitions. Word has length 126 [2022-03-03 17:46:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:37,565 INFO L470 AbstractCegarLoop]: Abstraction has 7898 states and 24252 transitions. [2022-03-03 17:46:37,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states and 24252 transitions. [2022-03-03 17:46:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-03 17:46:37,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:37,578 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:37,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-03 17:46:37,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:37,792 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash 843957792, now seen corresponding path program 18 times [2022-03-03 17:46:37,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:37,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834561603] [2022-03-03 17:46:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:46:38,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:38,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834561603] [2022-03-03 17:46:38,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834561603] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:38,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175648968] [2022-03-03 17:46:38,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:46:38,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:38,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:38,015 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) [2022-03-03 17:46:38,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:46:38,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:46:38,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:38,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:46:38,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:38,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:38,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175648968] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:38,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:38,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 9] total 28 [2022-03-03 17:46:38,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044252948] [2022-03-03 17:46:38,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:38,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 17:46:38,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 17:46:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:46:38,713 INFO L87 Difference]: Start difference. First operand 7898 states and 24252 transitions. Second operand has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:39,561 INFO L93 Difference]: Finished difference Result 12208 states and 35369 transitions. [2022-03-03 17:46:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:46:39,562 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 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 129 [2022-03-03 17:46:39,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:39,582 INFO L225 Difference]: With dead ends: 12208 [2022-03-03 17:46:39,583 INFO L226 Difference]: Without dead ends: 11197 [2022-03-03 17:46:39,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=2119, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:46:39,583 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 1675 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:39,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 1207 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:46:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11197 states. [2022-03-03 17:46:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11197 to 6266. [2022-03-03 17:46:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 6265 states have (on average 2.8221867517956905) internal successors, (17681), 6265 states have internal predecessors, (17681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 17681 transitions. [2022-03-03 17:46:39,710 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 17681 transitions. Word has length 129 [2022-03-03 17:46:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:39,710 INFO L470 AbstractCegarLoop]: Abstraction has 6266 states and 17681 transitions. [2022-03-03 17:46:39,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 17681 transitions. [2022-03-03 17:46:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-03-03 17:46:39,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:39,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:39,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:39,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:39,939 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:39,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1221205168, now seen corresponding path program 19 times [2022-03-03 17:46:39,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:39,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817420769] [2022-03-03 17:46:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:39,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 25 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:46:40,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:40,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817420769] [2022-03-03 17:46:40,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817420769] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:40,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030972851] [2022-03-03 17:46:40,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:46:40,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:40,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:40,045 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) [2022-03-03 17:46:40,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:46:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:40,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:46:40,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:46:40,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 19 proven. 39 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:46:40,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030972851] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:40,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:40,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-03 17:46:40,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844180418] [2022-03-03 17:46:40,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:40,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:46:40,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:40,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:46:40,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:46:40,961 INFO L87 Difference]: Start difference. First operand 6266 states and 17681 transitions. Second operand has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:41,265 INFO L93 Difference]: Finished difference Result 3904 states and 10523 transitions. [2022-03-03 17:46:41,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:46:41,265 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 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 132 [2022-03-03 17:46:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:41,270 INFO L225 Difference]: With dead ends: 3904 [2022-03-03 17:46:41,270 INFO L226 Difference]: Without dead ends: 2989 [2022-03-03 17:46:41,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=2269, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:46:41,271 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 611 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:41,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1418 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:46:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2022-03-03 17:46:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2984. [2022-03-03 17:46:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2983 states have (on average 2.7978545088836744) internal successors, (8346), 2983 states have internal predecessors, (8346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 8346 transitions. [2022-03-03 17:46:41,310 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 8346 transitions. Word has length 132 [2022-03-03 17:46:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:41,310 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 8346 transitions. [2022-03-03 17:46:41,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 8346 transitions. [2022-03-03 17:46:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-03 17:46:41,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:41,315 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:41,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:41,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:41,523 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 330603373, now seen corresponding path program 20 times [2022-03-03 17:46:41,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:41,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399575854] [2022-03-03 17:46:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:42,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:42,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399575854] [2022-03-03 17:46:42,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399575854] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:42,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670618755] [2022-03-03 17:46:42,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:46:42,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:42,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:42,225 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) [2022-03-03 17:46:42,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:46:42,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:46:42,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:42,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:46:42,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:43,357 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:46:43,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:46:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:43,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:43,466 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:46:43,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:46:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:44,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670618755] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:44,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:44,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 61 [2022-03-03 17:46:44,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911564848] [2022-03-03 17:46:44,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:44,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:46:44,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:46:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=3080, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:46:44,431 INFO L87 Difference]: Start difference. First operand 2984 states and 8346 transitions. Second operand has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:53,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:53,893 INFO L93 Difference]: Finished difference Result 38735 states and 104507 transitions. [2022-03-03 17:46:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2022-03-03 17:46:53,893 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 states have internal predecessors, (303), 0 states have call successors, (0), 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 133 [2022-03-03 17:46:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:53,959 INFO L225 Difference]: With dead ends: 38735 [2022-03-03 17:46:53,959 INFO L226 Difference]: Without dead ends: 30296 [2022-03-03 17:46:53,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 233 SyntacticMatches, 5 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26941 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=7614, Invalid=63942, Unknown=0, NotChecked=0, Total=71556 [2022-03-03 17:46:53,964 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 4233 mSDsluCounter, 12958 mSDsCounter, 0 mSdLazyCounter, 4365 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4233 SdHoareTripleChecker+Valid, 11907 SdHoareTripleChecker+Invalid, 5949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1256 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:53,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4233 Valid, 11907 Invalid, 5949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4365 Invalid, 0 Unknown, 1256 Unchecked, 1.8s Time] [2022-03-03 17:46:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30296 states. [2022-03-03 17:46:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30296 to 7090. [2022-03-03 17:46:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 2.9136690647482015) internal successors, (20655), 7089 states have internal predecessors, (20655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 20655 transitions. [2022-03-03 17:46:54,330 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 20655 transitions. Word has length 133 [2022-03-03 17:46:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:54,330 INFO L470 AbstractCegarLoop]: Abstraction has 7090 states and 20655 transitions. [2022-03-03 17:46:54,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 20655 transitions. [2022-03-03 17:46:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-03 17:46:54,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:54,342 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:54,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-03 17:46:54,542 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,SelfDestructingSolverStorable23 [2022-03-03 17:46:54,542 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1970216245, now seen corresponding path program 21 times [2022-03-03 17:46:54,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:54,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70769241] [2022-03-03 17:46:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:55,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:55,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70769241] [2022-03-03 17:46:55,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70769241] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:55,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481425902] [2022-03-03 17:46:55,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:46:55,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:55,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:55,479 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) [2022-03-03 17:46:55,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:46:55,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:46:55,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:55,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:46:55,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:56,105 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:46:56,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:46:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-03-03 17:46:56,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:56,302 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:46:56,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:46:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:46:56,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481425902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:56,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:56,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 10, 11] total 39 [2022-03-03 17:46:56,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885585036] [2022-03-03 17:46:56,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:56,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:46:56,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:46:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1244, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:46:56,636 INFO L87 Difference]: Start difference. First operand 7090 states and 20655 transitions. Second operand has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:59,014 INFO L93 Difference]: Finished difference Result 10488 states and 29597 transitions. [2022-03-03 17:46:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 17:46:59,014 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 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 133 [2022-03-03 17:46:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:59,031 INFO L225 Difference]: With dead ends: 10488 [2022-03-03 17:46:59,031 INFO L226 Difference]: Without dead ends: 10469 [2022-03-03 17:46:59,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1344, Invalid=6138, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 17:46:59,032 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1095 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:59,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 2843 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 673 Invalid, 0 Unknown, 236 Unchecked, 0.3s Time] [2022-03-03 17:46:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2022-03-03 17:46:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 7732. [2022-03-03 17:46:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7732 states, 7731 states have (on average 2.91178372784892) internal successors, (22511), 7731 states have internal predecessors, (22511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7732 states to 7732 states and 22511 transitions. [2022-03-03 17:46:59,162 INFO L78 Accepts]: Start accepts. Automaton has 7732 states and 22511 transitions. Word has length 133 [2022-03-03 17:46:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:59,162 INFO L470 AbstractCegarLoop]: Abstraction has 7732 states and 22511 transitions. [2022-03-03 17:46:59,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7732 states and 22511 transitions. [2022-03-03 17:46:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-03 17:46:59,175 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:59,175 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:59,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:59,375 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,SelfDestructingSolverStorable24 [2022-03-03 17:46:59,375 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 904081163, now seen corresponding path program 22 times [2022-03-03 17:46:59,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:59,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393911557] [2022-03-03 17:46:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:00,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:00,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393911557] [2022-03-03 17:47:00,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393911557] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:00,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197043397] [2022-03-03 17:47:00,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:47:00,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:00,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:00,160 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) [2022-03-03 17:47:00,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:47:00,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:47:00,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:00,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:47:00,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:01,267 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:47:01,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:47:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:01,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:01,383 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:47:01,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:47:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:02,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197043397] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:02,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:02,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 61 [2022-03-03 17:47:02,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411560871] [2022-03-03 17:47:02,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:02,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:47:02,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:47:02,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=3081, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:47:02,413 INFO L87 Difference]: Start difference. First operand 7732 states and 22511 transitions. Second operand has 61 states, 61 states have (on average 4.934426229508197) internal successors, (301), 61 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:06,850 INFO L93 Difference]: Finished difference Result 21496 states and 57560 transitions. [2022-03-03 17:47:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-03 17:47:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.934426229508197) internal successors, (301), 61 states have internal predecessors, (301), 0 states have call successors, (0), 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 133 [2022-03-03 17:47:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:06,890 INFO L225 Difference]: With dead ends: 21496 [2022-03-03 17:47:06,891 INFO L226 Difference]: Without dead ends: 21076 [2022-03-03 17:47:06,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 230 SyntacticMatches, 5 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7059 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2736, Invalid=20216, Unknown=0, NotChecked=0, Total=22952 [2022-03-03 17:47:06,893 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 2542 mSDsluCounter, 9314 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 8949 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 521 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:06,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2542 Valid, 8949 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2567 Invalid, 0 Unknown, 521 Unchecked, 1.1s Time] [2022-03-03 17:47:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21076 states. [2022-03-03 17:47:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21076 to 7871. [2022-03-03 17:47:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7871 states, 7870 states have (on average 2.903939008894536) internal successors, (22854), 7870 states have internal predecessors, (22854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7871 states to 7871 states and 22854 transitions. [2022-03-03 17:47:07,150 INFO L78 Accepts]: Start accepts. Automaton has 7871 states and 22854 transitions. Word has length 133 [2022-03-03 17:47:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:07,150 INFO L470 AbstractCegarLoop]: Abstraction has 7871 states and 22854 transitions. [2022-03-03 17:47:07,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.934426229508197) internal successors, (301), 61 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7871 states and 22854 transitions. [2022-03-03 17:47:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-03 17:47:07,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:07,163 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:07,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:07,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-03 17:47:07,377 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash -910024841, now seen corresponding path program 23 times [2022-03-03 17:47:07,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:07,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877029490] [2022-03-03 17:47:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:07,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:08,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:08,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877029490] [2022-03-03 17:47:08,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877029490] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:08,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136529672] [2022-03-03 17:47:08,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:47:08,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:08,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:08,240 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) [2022-03-03 17:47:08,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:47:08,364 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:47:08,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:08,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-03 17:47:08,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:08,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:47:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:47:08,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:08,865 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:47:08,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:47:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-03-03 17:47:09,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136529672] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:09,051 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:09,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 17, 10] total 40 [2022-03-03 17:47:09,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40013356] [2022-03-03 17:47:09,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:09,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:47:09,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:09,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:47:09,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:47:09,052 INFO L87 Difference]: Start difference. First operand 7871 states and 22854 transitions. Second operand has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:12,187 INFO L93 Difference]: Finished difference Result 16025 states and 44363 transitions. [2022-03-03 17:47:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 17:47:12,187 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 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 133 [2022-03-03 17:47:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:12,212 INFO L225 Difference]: With dead ends: 16025 [2022-03-03 17:47:12,212 INFO L226 Difference]: Without dead ends: 13420 [2022-03-03 17:47:12,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3652 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1128, Invalid=11082, Unknown=0, NotChecked=0, Total=12210 [2022-03-03 17:47:12,214 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1170 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:12,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 4339 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:47:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13420 states. [2022-03-03 17:47:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13420 to 5522. [2022-03-03 17:47:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 5521 states have (on average 2.857634486506068) internal successors, (15777), 5521 states have internal predecessors, (15777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 15777 transitions. [2022-03-03 17:47:12,339 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 15777 transitions. Word has length 133 [2022-03-03 17:47:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:12,339 INFO L470 AbstractCegarLoop]: Abstraction has 5522 states and 15777 transitions. [2022-03-03 17:47:12,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 15777 transitions. [2022-03-03 17:47:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-03-03 17:47:12,346 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:12,346 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:12,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:12,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:12,547 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2069477215, now seen corresponding path program 24 times [2022-03-03 17:47:12,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:12,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319479814] [2022-03-03 17:47:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:12,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:13,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:13,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319479814] [2022-03-03 17:47:13,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319479814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:13,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639281721] [2022-03-03 17:47:13,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:47:13,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:13,193 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) [2022-03-03 17:47:13,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:47:13,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:47:13,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:13,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-03 17:47:13,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:14,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:47:14,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:47:15,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:47:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:15,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:15,208 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_799) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-03-03 17:47:15,300 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:47:15,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:47:15,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:47:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-03-03 17:47:16,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639281721] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:16,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:16,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 83 [2022-03-03 17:47:16,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653201036] [2022-03-03 17:47:16,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:16,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-03-03 17:47:16,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-03-03 17:47:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=6137, Unknown=1, NotChecked=160, Total=6806 [2022-03-03 17:47:16,952 INFO L87 Difference]: Start difference. First operand 5522 states and 15777 transitions. Second operand has 83 states, 83 states have (on average 4.168674698795181) internal successors, (346), 83 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:34,099 INFO L93 Difference]: Finished difference Result 38272 states and 104555 transitions. [2022-03-03 17:47:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-03-03 17:47:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 4.168674698795181) internal successors, (346), 83 states have internal predecessors, (346), 0 states have call successors, (0), 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 136 [2022-03-03 17:47:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:34,170 INFO L225 Difference]: With dead ends: 38272 [2022-03-03 17:47:34,170 INFO L226 Difference]: Without dead ends: 34864 [2022-03-03 17:47:34,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 220 SyntacticMatches, 6 SemanticMatches, 257 ConstructedPredicates, 1 IntricatePredicates, 11 DeprecatedPredicates, 20211 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=9147, Invalid=57084, Unknown=79, NotChecked=512, Total=66822 [2022-03-03 17:47:34,173 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 5996 mSDsluCounter, 20375 mSDsCounter, 0 mSdLazyCounter, 6167 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5996 SdHoareTripleChecker+Valid, 18735 SdHoareTripleChecker+Invalid, 9622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 6167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2870 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:34,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5996 Valid, 18735 Invalid, 9622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [585 Valid, 6167 Invalid, 0 Unknown, 2870 Unchecked, 2.7s Time] [2022-03-03 17:47:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34864 states. [2022-03-03 17:47:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34864 to 9871. [2022-03-03 17:47:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9871 states, 9870 states have (on average 3.024316109422492) internal successors, (29850), 9870 states have internal predecessors, (29850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 29850 transitions. [2022-03-03 17:47:34,495 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 29850 transitions. Word has length 136 [2022-03-03 17:47:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:34,495 INFO L470 AbstractCegarLoop]: Abstraction has 9871 states and 29850 transitions. [2022-03-03 17:47:34,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 4.168674698795181) internal successors, (346), 83 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 29850 transitions. [2022-03-03 17:47:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:47:34,509 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:34,509 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:34,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:34,709 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,SelfDestructingSolverStorable27 [2022-03-03 17:47:34,710 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:34,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2010186831, now seen corresponding path program 25 times [2022-03-03 17:47:34,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:34,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625558121] [2022-03-03 17:47:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:34,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:35,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:35,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625558121] [2022-03-03 17:47:35,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625558121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:35,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124006726] [2022-03-03 17:47:35,462 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:47:35,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:35,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:35,463 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) [2022-03-03 17:47:35,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:47:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:35,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 17:47:35,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:35,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:47:35,770 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:47:35,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:47:36,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:47:37,155 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:47:37,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:47:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:37,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:37,348 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_837 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_837) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2022-03-03 17:47:37,373 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:47:37,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:47:37,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:47:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-03-03 17:47:40,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124006726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:40,053 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:40,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 84 [2022-03-03 17:47:40,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214170127] [2022-03-03 17:47:40,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:40,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-03 17:47:40,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-03 17:47:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=6290, Unknown=1, NotChecked=162, Total=6972 [2022-03-03 17:47:40,054 INFO L87 Difference]: Start difference. First operand 9871 states and 29850 transitions. Second operand has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:57,232 INFO L93 Difference]: Finished difference Result 76582 states and 223009 transitions. [2022-03-03 17:47:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-03-03 17:47:57,233 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 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 139 [2022-03-03 17:47:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:57,449 INFO L225 Difference]: With dead ends: 76582 [2022-03-03 17:47:57,449 INFO L226 Difference]: Without dead ends: 76572 [2022-03-03 17:47:57,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 276 SyntacticMatches, 12 SemanticMatches, 277 ConstructedPredicates, 1 IntricatePredicates, 17 DeprecatedPredicates, 22762 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=10283, Invalid=66717, Unknown=10, NotChecked=552, Total=77562 [2022-03-03 17:47:57,452 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 2060 mSDsluCounter, 31563 mSDsCounter, 0 mSdLazyCounter, 6219 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 31967 SdHoareTripleChecker+Invalid, 10434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 6219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4023 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:57,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2060 Valid, 31967 Invalid, 10434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 6219 Invalid, 0 Unknown, 4023 Unchecked, 2.5s Time] [2022-03-03 17:47:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76572 states. [2022-03-03 17:47:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76572 to 12960. [2022-03-03 17:47:58,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12960 states, 12959 states have (on average 3.0635851531753993) internal successors, (39701), 12959 states have internal predecessors, (39701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12960 states to 12960 states and 39701 transitions. [2022-03-03 17:47:58,172 INFO L78 Accepts]: Start accepts. Automaton has 12960 states and 39701 transitions. Word has length 139 [2022-03-03 17:47:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:58,172 INFO L470 AbstractCegarLoop]: Abstraction has 12960 states and 39701 transitions. [2022-03-03 17:47:58,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 12960 states and 39701 transitions. [2022-03-03 17:47:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:47:58,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:58,189 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:58,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:58,390 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,SelfDestructingSolverStorable28 [2022-03-03 17:47:58,390 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash -583514407, now seen corresponding path program 26 times [2022-03-03 17:47:58,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:58,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37686019] [2022-03-03 17:47:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:58,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:59,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:59,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37686019] [2022-03-03 17:47:59,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37686019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:59,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566768425] [2022-03-03 17:47:59,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:47:59,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:59,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:59,179 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) [2022-03-03 17:47:59,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:47:59,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:47:59,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:59,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-03 17:47:59,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:48:00,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:48:00,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:48:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:00,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:00,964 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_874) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)) 5)) is different from false [2022-03-03 17:48:00,992 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:48:00,992 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:48:00,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:48:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-03-03 17:48:02,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566768425] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:02,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:02,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 86 [2022-03-03 17:48:02,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975265882] [2022-03-03 17:48:02,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:02,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-03-03 17:48:02,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:02,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-03-03 17:48:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=6610, Unknown=1, NotChecked=166, Total=7310 [2022-03-03 17:48:02,822 INFO L87 Difference]: Start difference. First operand 12960 states and 39701 transitions. Second operand has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:31,382 INFO L93 Difference]: Finished difference Result 70015 states and 196984 transitions. [2022-03-03 17:48:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2022-03-03 17:48:31,383 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 states have internal predecessors, (355), 0 states have call successors, (0), 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 139 [2022-03-03 17:48:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:31,572 INFO L225 Difference]: With dead ends: 70015 [2022-03-03 17:48:31,572 INFO L226 Difference]: Without dead ends: 64281 [2022-03-03 17:48:31,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 224 SyntacticMatches, 24 SemanticMatches, 347 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42063 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=16627, Invalid=104132, Unknown=1, NotChecked=692, Total=121452 [2022-03-03 17:48:31,578 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 8178 mSDsluCounter, 44018 mSDsCounter, 0 mSdLazyCounter, 12487 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8178 SdHoareTripleChecker+Valid, 40805 SdHoareTripleChecker+Invalid, 15343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 12487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2058 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:31,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8178 Valid, 40805 Invalid, 15343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [798 Valid, 12487 Invalid, 0 Unknown, 2058 Unchecked, 5.2s Time] [2022-03-03 17:48:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64281 states. [2022-03-03 17:48:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64281 to 17905. [2022-03-03 17:48:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17905 states, 17904 states have (on average 3.1076854334226987) internal successors, (55640), 17904 states have internal predecessors, (55640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17905 states to 17905 states and 55640 transitions. [2022-03-03 17:48:32,398 INFO L78 Accepts]: Start accepts. Automaton has 17905 states and 55640 transitions. Word has length 139 [2022-03-03 17:48:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:32,398 INFO L470 AbstractCegarLoop]: Abstraction has 17905 states and 55640 transitions. [2022-03-03 17:48:32,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 17905 states and 55640 transitions. [2022-03-03 17:48:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:48:32,424 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:32,424 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:32,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-03 17:48:32,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:32,625 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1468962555, now seen corresponding path program 27 times [2022-03-03 17:48:32,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:32,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784349212] [2022-03-03 17:48:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:32,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:33,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:33,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784349212] [2022-03-03 17:48:33,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784349212] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:33,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022767410] [2022-03-03 17:48:33,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:48:33,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:33,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:33,171 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) [2022-03-03 17:48:33,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:48:33,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:48:33,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:33,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:48:33,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:34,300 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:48:34,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:48:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-03 17:48:34,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:34,592 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:48:34,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:48:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-03 17:48:35,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022767410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:35,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:35,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 21] total 61 [2022-03-03 17:48:35,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665861812] [2022-03-03 17:48:35,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:35,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:48:35,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:48:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3216, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:48:35,101 INFO L87 Difference]: Start difference. First operand 17905 states and 55640 transitions. Second operand has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:38,928 INFO L93 Difference]: Finished difference Result 37055 states and 105551 transitions. [2022-03-03 17:48:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 17:48:38,928 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 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 139 [2022-03-03 17:48:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:39,010 INFO L225 Difference]: With dead ends: 37055 [2022-03-03 17:48:39,011 INFO L226 Difference]: Without dead ends: 35156 [2022-03-03 17:48:39,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5172 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2650, Invalid=16256, Unknown=0, NotChecked=0, Total=18906 [2022-03-03 17:48:39,012 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1950 mSDsluCounter, 5620 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 5541 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1212 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:39,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 5541 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 963 Invalid, 0 Unknown, 1212 Unchecked, 0.4s Time] [2022-03-03 17:48:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35156 states. [2022-03-03 17:48:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35156 to 17657. [2022-03-03 17:48:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17657 states, 17656 states have (on average 2.942852288173992) internal successors, (51959), 17656 states have internal predecessors, (51959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17657 states to 17657 states and 51959 transitions. [2022-03-03 17:48:39,638 INFO L78 Accepts]: Start accepts. Automaton has 17657 states and 51959 transitions. Word has length 139 [2022-03-03 17:48:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:39,638 INFO L470 AbstractCegarLoop]: Abstraction has 17657 states and 51959 transitions. [2022-03-03 17:48:39,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:39,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17657 states and 51959 transitions. [2022-03-03 17:48:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:48:39,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:39,656 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:39,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:39,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:39,867 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash 900063931, now seen corresponding path program 28 times [2022-03-03 17:48:39,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:39,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167680786] [2022-03-03 17:48:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:40,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:40,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167680786] [2022-03-03 17:48:40,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167680786] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:40,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306369691] [2022-03-03 17:48:40,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:48:40,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:40,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:40,436 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) [2022-03-03 17:48:40,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:48:40,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:48:40,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:40,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 17:48:40,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:41,655 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:48:41,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:48:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:41,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:41,800 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:48:41,801 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:48:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:43,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306369691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:43,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:43,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-03-03 17:48:43,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391277755] [2022-03-03 17:48:43,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:43,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-03 17:48:43,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:43,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-03 17:48:43,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=4163, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:48:43,410 INFO L87 Difference]: Start difference. First operand 17657 states and 51959 transitions. Second operand has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:48,047 INFO L93 Difference]: Finished difference Result 21153 states and 56447 transitions. [2022-03-03 17:48:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-03 17:48:48,047 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 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 139 [2022-03-03 17:48:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:48,080 INFO L225 Difference]: With dead ends: 21153 [2022-03-03 17:48:48,080 INFO L226 Difference]: Without dead ends: 18122 [2022-03-03 17:48:48,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2980, Invalid=19072, Unknown=0, NotChecked=0, Total=22052 [2022-03-03 17:48:48,081 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 2373 mSDsluCounter, 8299 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 7957 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:48,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2373 Valid, 7957 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1994 Invalid, 0 Unknown, 429 Unchecked, 0.8s Time] [2022-03-03 17:48:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18122 states. [2022-03-03 17:48:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18122 to 10708. [2022-03-03 17:48:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10708 states, 10707 states have (on average 2.767535257308303) internal successors, (29632), 10707 states have internal predecessors, (29632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 29632 transitions. [2022-03-03 17:48:48,301 INFO L78 Accepts]: Start accepts. Automaton has 10708 states and 29632 transitions. Word has length 139 [2022-03-03 17:48:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:48,301 INFO L470 AbstractCegarLoop]: Abstraction has 10708 states and 29632 transitions. [2022-03-03 17:48:48,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 10708 states and 29632 transitions. [2022-03-03 17:48:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:48:48,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:48,313 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:48,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 17:48:48,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:48,514 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 441584335, now seen corresponding path program 29 times [2022-03-03 17:48:48,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:48,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124609865] [2022-03-03 17:48:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:49,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:49,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124609865] [2022-03-03 17:48:49,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124609865] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:49,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959886785] [2022-03-03 17:48:49,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:48:49,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:49,084 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) [2022-03-03 17:48:49,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:48:49,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:48:49,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:49,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 17:48:49,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:50,392 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:48:50,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:48:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:50,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:50,539 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:48:50,539 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:48:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:52,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959886785] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:52,108 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:52,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-03-03 17:48:52,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386096197] [2022-03-03 17:48:52,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:52,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-03 17:48:52,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-03 17:48:52,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=4163, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:48:52,110 INFO L87 Difference]: Start difference. First operand 10708 states and 29632 transitions. Second operand has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:00,538 INFO L93 Difference]: Finished difference Result 27059 states and 70480 transitions. [2022-03-03 17:49:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-03-03 17:49:00,539 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 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 139 [2022-03-03 17:49:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:00,583 INFO L225 Difference]: With dead ends: 27059 [2022-03-03 17:49:00,583 INFO L226 Difference]: Without dead ends: 24478 [2022-03-03 17:49:00,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10390 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=4997, Invalid=31675, Unknown=0, NotChecked=0, Total=36672 [2022-03-03 17:49:00,585 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 2345 mSDsluCounter, 12591 mSDsCounter, 0 mSdLazyCounter, 4091 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 11939 SdHoareTripleChecker+Invalid, 4554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:00,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2345 Valid, 11939 Invalid, 4554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 4091 Invalid, 0 Unknown, 317 Unchecked, 1.6s Time] [2022-03-03 17:49:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24478 states. [2022-03-03 17:49:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24478 to 11641. [2022-03-03 17:49:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11641 states, 11640 states have (on average 2.777319587628866) internal successors, (32328), 11640 states have internal predecessors, (32328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11641 states to 11641 states and 32328 transitions. [2022-03-03 17:49:00,884 INFO L78 Accepts]: Start accepts. Automaton has 11641 states and 32328 transitions. Word has length 139 [2022-03-03 17:49:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:00,885 INFO L470 AbstractCegarLoop]: Abstraction has 11641 states and 32328 transitions. [2022-03-03 17:49:00,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 11641 states and 32328 transitions. [2022-03-03 17:49:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:49:00,897 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:00,897 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:00,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:01,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:01,098 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1372521669, now seen corresponding path program 30 times [2022-03-03 17:49:01,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:01,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963678465] [2022-03-03 17:49:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:01,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:01,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963678465] [2022-03-03 17:49:01,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963678465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:01,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795111643] [2022-03-03 17:49:01,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:49:01,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:01,689 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) [2022-03-03 17:49:01,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:49:02,166 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:49:02,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:49:02,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:02,924 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:49:02,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:49:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-03 17:49:02,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:03,206 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:49:03,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:49:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-03 17:49:03,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795111643] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:03,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:03,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 21] total 61 [2022-03-03 17:49:03,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055606579] [2022-03-03 17:49:03,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:03,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:49:03,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:03,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:49:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3216, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:49:03,712 INFO L87 Difference]: Start difference. First operand 11641 states and 32328 transitions. Second operand has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:06,407 INFO L93 Difference]: Finished difference Result 18034 states and 48010 transitions. [2022-03-03 17:49:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 17:49:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 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 139 [2022-03-03 17:49:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:06,439 INFO L225 Difference]: With dead ends: 18034 [2022-03-03 17:49:06,439 INFO L226 Difference]: Without dead ends: 17742 [2022-03-03 17:49:06,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 271 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3675 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2180, Invalid=12100, Unknown=0, NotChecked=0, Total=14280 [2022-03-03 17:49:06,440 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1376 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 5254 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:06,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 5254 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 861 Invalid, 0 Unknown, 1107 Unchecked, 0.3s Time] [2022-03-03 17:49:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17742 states. [2022-03-03 17:49:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17742 to 13319. [2022-03-03 17:49:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 13318 states have (on average 2.7597987685838716) internal successors, (36755), 13318 states have internal predecessors, (36755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 36755 transitions. [2022-03-03 17:49:06,703 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 36755 transitions. Word has length 139 [2022-03-03 17:49:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:06,703 INFO L470 AbstractCegarLoop]: Abstraction has 13319 states and 36755 transitions. [2022-03-03 17:49:06,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 36755 transitions. [2022-03-03 17:49:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:49:06,719 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:06,719 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:06,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:06,921 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,SelfDestructingSolverStorable33 [2022-03-03 17:49:06,922 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1772191783, now seen corresponding path program 31 times [2022-03-03 17:49:06,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:06,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105070715] [2022-03-03 17:49:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:07,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:07,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105070715] [2022-03-03 17:49:07,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105070715] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:07,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250649902] [2022-03-03 17:49:07,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:49:07,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:07,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:07,521 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) [2022-03-03 17:49:07,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:49:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:07,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:49:07,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:08,733 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:49:08,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:49:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:08,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:08,849 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:49:08,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:49:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:10,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250649902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:10,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:10,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-03-03 17:49:10,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321247359] [2022-03-03 17:49:10,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:10,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-03 17:49:10,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-03 17:49:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=4133, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:49:10,461 INFO L87 Difference]: Start difference. First operand 13319 states and 36755 transitions. Second operand has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:23,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:23,418 INFO L93 Difference]: Finished difference Result 35422 states and 92942 transitions. [2022-03-03 17:49:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2022-03-03 17:49:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 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 139 [2022-03-03 17:49:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:23,480 INFO L225 Difference]: With dead ends: 35422 [2022-03-03 17:49:23,480 INFO L226 Difference]: Without dead ends: 29969 [2022-03-03 17:49:23,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23324 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=7636, Invalid=61796, Unknown=0, NotChecked=0, Total=69432 [2022-03-03 17:49:23,484 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 3920 mSDsluCounter, 17731 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3920 SdHoareTripleChecker+Valid, 16543 SdHoareTripleChecker+Invalid, 6167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 792 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:23,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3920 Valid, 16543 Invalid, 6167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 4952 Invalid, 0 Unknown, 792 Unchecked, 2.1s Time] [2022-03-03 17:49:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29969 states. [2022-03-03 17:49:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29969 to 11715. [2022-03-03 17:49:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11715 states, 11714 states have (on average 2.768396790165614) internal successors, (32429), 11714 states have internal predecessors, (32429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11715 states to 11715 states and 32429 transitions. [2022-03-03 17:49:23,855 INFO L78 Accepts]: Start accepts. Automaton has 11715 states and 32429 transitions. Word has length 139 [2022-03-03 17:49:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:23,855 INFO L470 AbstractCegarLoop]: Abstraction has 11715 states and 32429 transitions. [2022-03-03 17:49:23,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 11715 states and 32429 transitions. [2022-03-03 17:49:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:49:23,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:23,865 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:23,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:24,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:24,066 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1803486843, now seen corresponding path program 32 times [2022-03-03 17:49:24,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:24,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728210685] [2022-03-03 17:49:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:24,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:24,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:24,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728210685] [2022-03-03 17:49:24,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728210685] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:24,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632779554] [2022-03-03 17:49:24,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:49:24,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:24,868 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) [2022-03-03 17:49:24,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:49:24,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:49:24,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:24,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 17:49:24,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:26,017 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:49:26,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:49:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:26,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:26,100 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:49:26,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:49:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:27,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632779554] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:27,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:27,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 70 [2022-03-03 17:49:27,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405839646] [2022-03-03 17:49:27,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:27,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-03 17:49:27,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-03 17:49:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=623, Invalid=4207, Unknown=0, NotChecked=0, Total=4830 [2022-03-03 17:49:27,788 INFO L87 Difference]: Start difference. First operand 11715 states and 32429 transitions. Second operand has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:35,565 INFO L93 Difference]: Finished difference Result 13485 states and 35220 transitions. [2022-03-03 17:49:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-03-03 17:49:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 states have internal predecessors, (339), 0 states have call successors, (0), 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 139 [2022-03-03 17:49:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:35,581 INFO L225 Difference]: With dead ends: 13485 [2022-03-03 17:49:35,581 INFO L226 Difference]: Without dead ends: 11254 [2022-03-03 17:49:35,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8981 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=4193, Invalid=26959, Unknown=0, NotChecked=0, Total=31152 [2022-03-03 17:49:35,583 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 3815 mSDsluCounter, 8913 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3815 SdHoareTripleChecker+Valid, 8491 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:35,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3815 Valid, 8491 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2360 Invalid, 0 Unknown, 235 Unchecked, 1.1s Time] [2022-03-03 17:49:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11254 states. [2022-03-03 17:49:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11254 to 5657. [2022-03-03 17:49:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5657 states, 5656 states have (on average 2.6865275813295617) internal successors, (15195), 5656 states have internal predecessors, (15195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5657 states to 5657 states and 15195 transitions. [2022-03-03 17:49:35,683 INFO L78 Accepts]: Start accepts. Automaton has 5657 states and 15195 transitions. Word has length 139 [2022-03-03 17:49:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:35,683 INFO L470 AbstractCegarLoop]: Abstraction has 5657 states and 15195 transitions. [2022-03-03 17:49:35,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5657 states and 15195 transitions. [2022-03-03 17:49:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:49:35,690 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:35,690 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:35,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:35,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:35,891 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:35,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1731393767, now seen corresponding path program 33 times [2022-03-03 17:49:35,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:35,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891831751] [2022-03-03 17:49:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:35,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:36,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:36,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891831751] [2022-03-03 17:49:36,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891831751] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:36,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059796736] [2022-03-03 17:49:36,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:49:36,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:36,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:36,667 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) [2022-03-03 17:49:36,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:49:37,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:49:37,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:37,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:49:37,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:37,837 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:49:37,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:49:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-03 17:49:37,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:38,141 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:49:38,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:49:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 78 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:38,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059796736] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:38,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:38,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 22] total 62 [2022-03-03 17:49:38,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170696177] [2022-03-03 17:49:38,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:38,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-03 17:49:38,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-03 17:49:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=3472, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:49:38,747 INFO L87 Difference]: Start difference. First operand 5657 states and 15195 transitions. Second operand has 62 states, 62 states have (on average 4.983870967741935) internal successors, (309), 62 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:47,831 INFO L93 Difference]: Finished difference Result 12678 states and 30468 transitions. [2022-03-03 17:49:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-03 17:49:47,832 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.983870967741935) internal successors, (309), 62 states have internal predecessors, (309), 0 states have call successors, (0), 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 139 [2022-03-03 17:49:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:47,847 INFO L225 Difference]: With dead ends: 12678 [2022-03-03 17:49:47,847 INFO L226 Difference]: Without dead ends: 11433 [2022-03-03 17:49:47,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 289 SyntacticMatches, 31 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9585 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4334, Invalid=24058, Unknown=0, NotChecked=0, Total=28392 [2022-03-03 17:49:47,849 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 3321 mSDsluCounter, 8672 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 8057 SdHoareTripleChecker+Invalid, 3820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2147 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:47,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3321 Valid, 8057 Invalid, 3820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1458 Invalid, 0 Unknown, 2147 Unchecked, 0.7s Time] [2022-03-03 17:49:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2022-03-03 17:49:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 6609. [2022-03-03 17:49:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6609 states, 6608 states have (on average 2.6331719128329296) internal successors, (17400), 6608 states have internal predecessors, (17400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6609 states to 6609 states and 17400 transitions. [2022-03-03 17:49:47,970 INFO L78 Accepts]: Start accepts. Automaton has 6609 states and 17400 transitions. Word has length 139 [2022-03-03 17:49:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:47,971 INFO L470 AbstractCegarLoop]: Abstraction has 6609 states and 17400 transitions. [2022-03-03 17:49:47,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.983870967741935) internal successors, (309), 62 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6609 states and 17400 transitions. [2022-03-03 17:49:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:49:47,979 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:47,979 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:47,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:48,180 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,SelfDestructingSolverStorable36 [2022-03-03 17:49:48,180 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1645801807, now seen corresponding path program 34 times [2022-03-03 17:49:48,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:48,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380410821] [2022-03-03 17:49:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:48,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:48,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380410821] [2022-03-03 17:49:48,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380410821] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:48,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565110626] [2022-03-03 17:49:48,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:49:48,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:48,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:48,735 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) [2022-03-03 17:49:48,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:49:48,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:49:48,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:48,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-03 17:49:48,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:50,086 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:49:50,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:49:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:50,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:50,236 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:49:50,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:49:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:51,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565110626] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:51,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:51,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-03-03 17:49:51,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702845734] [2022-03-03 17:49:51,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:51,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-03 17:49:51,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-03 17:49:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=4116, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:49:51,384 INFO L87 Difference]: Start difference. First operand 6609 states and 17400 transitions. Second operand has 69 states, 69 states have (on average 4.855072463768116) internal successors, (335), 69 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:03,089 INFO L93 Difference]: Finished difference Result 30564 states and 79483 transitions. [2022-03-03 17:50:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-03-03 17:50:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.855072463768116) internal successors, (335), 69 states have internal predecessors, (335), 0 states have call successors, (0), 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 139 [2022-03-03 17:50:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:03,136 INFO L225 Difference]: With dead ends: 30564 [2022-03-03 17:50:03,136 INFO L226 Difference]: Without dead ends: 24418 [2022-03-03 17:50:03,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24963 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=6588, Invalid=64968, Unknown=0, NotChecked=0, Total=71556 [2022-03-03 17:50:03,141 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 3713 mSDsluCounter, 11093 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 10089 SdHoareTripleChecker+Invalid, 5196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1072 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:03,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3713 Valid, 10089 Invalid, 5196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 3772 Invalid, 0 Unknown, 1072 Unchecked, 1.6s Time] [2022-03-03 17:50:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24418 states. [2022-03-03 17:50:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24418 to 6590. [2022-03-03 17:50:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 6589 states have (on average 2.7070875701927455) internal successors, (17837), 6589 states have internal predecessors, (17837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 17837 transitions. [2022-03-03 17:50:03,357 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 17837 transitions. Word has length 139 [2022-03-03 17:50:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:03,357 INFO L470 AbstractCegarLoop]: Abstraction has 6590 states and 17837 transitions. [2022-03-03 17:50:03,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.855072463768116) internal successors, (335), 69 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 17837 transitions. [2022-03-03 17:50:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-03-03 17:50:03,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:03,364 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:03,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-03 17:50:03,566 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,SelfDestructingSolverStorable37 [2022-03-03 17:50:03,566 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:03,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash 921915743, now seen corresponding path program 35 times [2022-03-03 17:50:03,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:03,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222079899] [2022-03-03 17:50:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:03,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:50:03,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:03,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222079899] [2022-03-03 17:50:03,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222079899] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:03,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59154153] [2022-03-03 17:50:03,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:50:03,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:03,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:03,655 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) [2022-03-03 17:50:03,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:50:03,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 17:50:03,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:03,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:50:03,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:50:03,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:50:04,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59154153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:04,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:04,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 11] total 16 [2022-03-03 17:50:04,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169132019] [2022-03-03 17:50:04,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:04,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 17:50:04,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:04,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 17:50:04,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:50:04,389 INFO L87 Difference]: Start difference. First operand 6590 states and 17837 transitions. Second operand has 16 states, 16 states have (on average 12.6875) internal successors, (203), 16 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:04,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:04,475 INFO L93 Difference]: Finished difference Result 11444 states and 31328 transitions. [2022-03-03 17:50:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:50:04,475 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.6875) internal successors, (203), 16 states have internal predecessors, (203), 0 states have call successors, (0), 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 142 [2022-03-03 17:50:04,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:04,493 INFO L225 Difference]: With dead ends: 11444 [2022-03-03 17:50:04,493 INFO L226 Difference]: Without dead ends: 10022 [2022-03-03 17:50:04,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:50:04,494 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 690 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:04,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 572 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:50:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2022-03-03 17:50:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 6968. [2022-03-03 17:50:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6967 states have (on average 2.8889048370891346) internal successors, (20127), 6967 states have internal predecessors, (20127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 20127 transitions. [2022-03-03 17:50:04,616 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 20127 transitions. Word has length 142 [2022-03-03 17:50:04,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:04,616 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 20127 transitions. [2022-03-03 17:50:04,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.6875) internal successors, (203), 16 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 20127 transitions. [2022-03-03 17:50:04,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-03 17:50:04,625 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:04,625 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:04,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:04,825 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,SelfDestructingSolverStorable38 [2022-03-03 17:50:04,825 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1653362510, now seen corresponding path program 36 times [2022-03-03 17:50:04,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:04,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571644026] [2022-03-03 17:50:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:04,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:05,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:05,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571644026] [2022-03-03 17:50:05,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571644026] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:05,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818767980] [2022-03-03 17:50:05,596 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:50:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:05,597 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) [2022-03-03 17:50:05,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:50:05,916 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 17:50:05,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:05,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 17:50:05,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:06,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:50:06,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:50:07,047 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:50:07,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:50:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-03 17:50:07,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:07,207 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1239 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1239) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-03-03 17:50:07,224 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:50:07,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:50:07,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:50:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 75 trivial. 7 not checked. [2022-03-03 17:50:07,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818767980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:07,804 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:07,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22, 18] total 61 [2022-03-03 17:50:07,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884573146] [2022-03-03 17:50:07,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:07,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:50:07,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:50:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3350, Unknown=1, NotChecked=116, Total=3660 [2022-03-03 17:50:07,806 INFO L87 Difference]: Start difference. First operand 6968 states and 20127 transitions. Second operand has 61 states, 61 states have (on average 5.147540983606557) internal successors, (314), 61 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:11,962 INFO L93 Difference]: Finished difference Result 19844 states and 54634 transitions. [2022-03-03 17:50:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 17:50:11,962 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.147540983606557) internal successors, (314), 61 states have internal predecessors, (314), 0 states have call successors, (0), 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 143 [2022-03-03 17:50:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:11,997 INFO L225 Difference]: With dead ends: 19844 [2022-03-03 17:50:11,997 INFO L226 Difference]: Without dead ends: 19303 [2022-03-03 17:50:11,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 258 SyntacticMatches, 10 SemanticMatches, 122 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 3922 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1416, Invalid=13593, Unknown=1, NotChecked=242, Total=15252 [2022-03-03 17:50:11,999 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1610 mSDsluCounter, 5856 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 688 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:11,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 5582 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2027 Invalid, 0 Unknown, 688 Unchecked, 0.8s Time] [2022-03-03 17:50:12,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19303 states. [2022-03-03 17:50:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19303 to 7219. [2022-03-03 17:50:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7219 states, 7218 states have (on average 2.8764200609587145) internal successors, (20762), 7218 states have internal predecessors, (20762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7219 states to 7219 states and 20762 transitions. [2022-03-03 17:50:12,181 INFO L78 Accepts]: Start accepts. Automaton has 7219 states and 20762 transitions. Word has length 143 [2022-03-03 17:50:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:12,181 INFO L470 AbstractCegarLoop]: Abstraction has 7219 states and 20762 transitions. [2022-03-03 17:50:12,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.147540983606557) internal successors, (314), 61 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7219 states and 20762 transitions. [2022-03-03 17:50:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-03 17:50:12,191 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:12,191 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:12,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:12,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 17:50:12,392 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1054034610, now seen corresponding path program 37 times [2022-03-03 17:50:12,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:12,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497018049] [2022-03-03 17:50:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:13,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:13,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497018049] [2022-03-03 17:50:13,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497018049] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:13,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662000229] [2022-03-03 17:50:13,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:50:13,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:13,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:13,345 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) [2022-03-03 17:50:13,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:50:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:13,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-03 17:50:13,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:13,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:50:13,665 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:50:13,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:50:14,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:50:14,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:50:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:14,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:15,085 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1281 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1281) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-03-03 17:50:15,171 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:50:15,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:50:15,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:50:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-03-03 17:50:17,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662000229] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:17,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:17,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 89 [2022-03-03 17:50:17,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397259053] [2022-03-03 17:50:17,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:17,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-03 17:50:17,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-03 17:50:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=662, Invalid=6997, Unknown=1, NotChecked=172, Total=7832 [2022-03-03 17:50:17,114 INFO L87 Difference]: Start difference. First operand 7219 states and 20762 transitions. Second operand has 89 states, 89 states have (on average 4.123595505617978) internal successors, (367), 89 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:43,362 INFO L93 Difference]: Finished difference Result 70657 states and 195778 transitions. [2022-03-03 17:50:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-03-03 17:50:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.123595505617978) internal successors, (367), 89 states have internal predecessors, (367), 0 states have call successors, (0), 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 143 [2022-03-03 17:50:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:43,538 INFO L225 Difference]: With dead ends: 70657 [2022-03-03 17:50:43,538 INFO L226 Difference]: Without dead ends: 66394 [2022-03-03 17:50:43,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 252 SyntacticMatches, 87 SemanticMatches, 327 ConstructedPredicates, 1 IntricatePredicates, 8 DeprecatedPredicates, 46692 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=10836, Invalid=96419, Unknown=5, NotChecked=652, Total=107912 [2022-03-03 17:50:43,544 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 7354 mSDsluCounter, 28460 mSDsCounter, 0 mSdLazyCounter, 8068 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7354 SdHoareTripleChecker+Valid, 25586 SdHoareTripleChecker+Invalid, 16861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8179 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:43,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7354 Valid, 25586 Invalid, 16861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8068 Invalid, 0 Unknown, 8179 Unchecked, 3.5s Time] [2022-03-03 17:50:43,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66394 states. [2022-03-03 17:50:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66394 to 15628. [2022-03-03 17:50:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15628 states, 15627 states have (on average 3.0433864465348437) internal successors, (47559), 15627 states have internal predecessors, (47559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15628 states to 15628 states and 47559 transitions. [2022-03-03 17:50:44,296 INFO L78 Accepts]: Start accepts. Automaton has 15628 states and 47559 transitions. Word has length 143 [2022-03-03 17:50:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:44,296 INFO L470 AbstractCegarLoop]: Abstraction has 15628 states and 47559 transitions. [2022-03-03 17:50:44,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.123595505617978) internal successors, (367), 89 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 15628 states and 47559 transitions. [2022-03-03 17:50:44,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:50:44,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:44,320 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:44,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:44,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:44,521 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:44,521 INFO L85 PathProgramCache]: Analyzing trace with hash -64123904, now seen corresponding path program 38 times [2022-03-03 17:50:44,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:44,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368543438] [2022-03-03 17:50:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:44,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:45,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:45,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368543438] [2022-03-03 17:50:45,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368543438] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:45,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891329863] [2022-03-03 17:50:45,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:45,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:45,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:45,515 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) [2022-03-03 17:50:45,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:50:45,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:45,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:45,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-03 17:50:45,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:45,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:50:45,851 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:50:45,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:50:47,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:50:47,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:50:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:47,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:47,774 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:50:47,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:50:47,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:50:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:50,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891329863] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:50,333 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:50,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 92 [2022-03-03 17:50:50,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435025331] [2022-03-03 17:50:50,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:50,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-03-03 17:50:50,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-03-03 17:50:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=7698, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 17:50:50,335 INFO L87 Difference]: Start difference. First operand 15628 states and 47559 transitions. Second operand has 92 states, 92 states have (on average 4.086956521739131) internal successors, (376), 92 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:10,066 INFO L93 Difference]: Finished difference Result 108964 states and 294379 transitions. [2022-03-03 17:52:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 536 states. [2022-03-03 17:52:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 4.086956521739131) internal successors, (376), 92 states have internal predecessors, (376), 0 states have call successors, (0), 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 146 [2022-03-03 17:52:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:10,305 INFO L225 Difference]: With dead ends: 108964 [2022-03-03 17:52:10,305 INFO L226 Difference]: Without dead ends: 80283 [2022-03-03 17:52:10,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 282 SyntacticMatches, 128 SemanticMatches, 618 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180556 ImplicationChecksByTransitivity, 71.0s TimeCoverageRelationStatistics Valid=33504, Invalid=350276, Unknown=0, NotChecked=0, Total=383780 [2022-03-03 17:52:10,318 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 10685 mSDsluCounter, 55577 mSDsCounter, 0 mSdLazyCounter, 14120 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10685 SdHoareTripleChecker+Valid, 51496 SdHoareTripleChecker+Invalid, 17534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 14120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2312 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:10,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10685 Valid, 51496 Invalid, 17534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1102 Valid, 14120 Invalid, 0 Unknown, 2312 Unchecked, 7.5s Time] [2022-03-03 17:52:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80283 states. [2022-03-03 17:52:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80283 to 16430. [2022-03-03 17:52:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16430 states, 16429 states have (on average 3.0306165926106274) internal successors, (49790), 16429 states have internal predecessors, (49790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16430 states to 16430 states and 49790 transitions. [2022-03-03 17:52:10,979 INFO L78 Accepts]: Start accepts. Automaton has 16430 states and 49790 transitions. Word has length 146 [2022-03-03 17:52:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:10,979 INFO L470 AbstractCegarLoop]: Abstraction has 16430 states and 49790 transitions. [2022-03-03 17:52:10,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 4.086956521739131) internal successors, (376), 92 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 16430 states and 49790 transitions. [2022-03-03 17:52:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:52:10,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:10,996 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:11,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:11,196 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,SelfDestructingSolverStorable41 [2022-03-03 17:52:11,196 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1262487403, now seen corresponding path program 39 times [2022-03-03 17:52:11,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:11,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610920863] [2022-03-03 17:52:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:11,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 52 proven. 79 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-03 17:52:11,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:11,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610920863] [2022-03-03 17:52:11,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610920863] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:11,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998288189] [2022-03-03 17:52:11,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:52:11,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:11,337 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) [2022-03-03 17:52:11,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:52:11,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:52:11,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:11,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 17:52:11,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:12,324 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-03-03 17:52:12,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2022-03-03 17:52:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 51 proven. 53 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-03 17:52:12,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:12,636 INFO L353 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-03-03 17:52:12,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 28 [2022-03-03 17:52:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 103 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-03 17:52:13,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998288189] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:13,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:13,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 49 [2022-03-03 17:52:13,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148979529] [2022-03-03 17:52:13,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:13,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-03 17:52:13,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-03 17:52:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2019, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:52:13,043 INFO L87 Difference]: Start difference. First operand 16430 states and 49790 transitions. Second operand has 49 states, 49 states have (on average 5.428571428571429) internal successors, (266), 49 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:14,273 INFO L93 Difference]: Finished difference Result 19254 states and 56903 transitions. [2022-03-03 17:52:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:52:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.428571428571429) internal successors, (266), 49 states have internal predecessors, (266), 0 states have call successors, (0), 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 151 [2022-03-03 17:52:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:14,307 INFO L225 Difference]: With dead ends: 19254 [2022-03-03 17:52:14,308 INFO L226 Difference]: Without dead ends: 18089 [2022-03-03 17:52:14,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1432, Invalid=7124, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 17:52:14,309 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 979 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:14,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3445 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 555 Invalid, 0 Unknown, 463 Unchecked, 0.2s Time] [2022-03-03 17:52:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18089 states. [2022-03-03 17:52:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18089 to 16097. [2022-03-03 17:52:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16097 states, 16096 states have (on average 3.0431163021868786) internal successors, (48982), 16096 states have internal predecessors, (48982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16097 states to 16097 states and 48982 transitions. [2022-03-03 17:52:14,565 INFO L78 Accepts]: Start accepts. Automaton has 16097 states and 48982 transitions. Word has length 151 [2022-03-03 17:52:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:14,565 INFO L470 AbstractCegarLoop]: Abstraction has 16097 states and 48982 transitions. [2022-03-03 17:52:14,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.428571428571429) internal successors, (266), 49 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 16097 states and 48982 transitions. [2022-03-03 17:52:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:52:14,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:14,582 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:14,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:14,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-03 17:52:14,782 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash 149553678, now seen corresponding path program 40 times [2022-03-03 17:52:14,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:14,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486287670] [2022-03-03 17:52:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:14,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:15,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:15,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486287670] [2022-03-03 17:52:15,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486287670] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:15,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117268762] [2022-03-03 17:52:15,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:52:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:15,944 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) [2022-03-03 17:52:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:52:16,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:52:16,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:16,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-03 17:52:16,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:16,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:52:16,258 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:52:16,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:52:17,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:52:17,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:52:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:17,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:17,994 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1401 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1401) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-03-03 17:52:18,018 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:52:18,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-03-03 17:52:18,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:52:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-03-03 17:52:20,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117268762] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:20,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:20,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 98 [2022-03-03 17:52:20,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112757617] [2022-03-03 17:52:20,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:20,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-03-03 17:52:20,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-03-03 17:52:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=8551, Unknown=1, NotChecked=190, Total=9506 [2022-03-03 17:52:20,211 INFO L87 Difference]: Start difference. First operand 16097 states and 48982 transitions. Second operand has 98 states, 98 states have (on average 3.9591836734693877) internal successors, (388), 98 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:02,985 INFO L93 Difference]: Finished difference Result 132932 states and 354073 transitions. [2022-03-03 17:56:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 947 states. [2022-03-03 17:56:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.9591836734693877) internal successors, (388), 98 states have internal predecessors, (388), 0 states have call successors, (0), 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 152 [2022-03-03 17:56:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:03,252 INFO L225 Difference]: With dead ends: 132932 [2022-03-03 17:56:03,252 INFO L226 Difference]: Without dead ends: 102386 [2022-03-03 17:56:03,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1706 GetRequests, 277 SyntacticMatches, 395 SemanticMatches, 1034 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 547126 ImplicationChecksByTransitivity, 191.8s TimeCoverageRelationStatistics Valid=107987, Invalid=962199, Unknown=8, NotChecked=2066, Total=1072260 [2022-03-03 17:56:03,306 INFO L933 BasicCegarLoop]: 3137 mSDtfsCounter, 10764 mSDsluCounter, 150773 mSDsCounter, 0 mSdLazyCounter, 39105 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10764 SdHoareTripleChecker+Valid, 139670 SdHoareTripleChecker+Invalid, 48600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 39105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8540 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:03,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10764 Valid, 139670 Invalid, 48600 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [955 Valid, 39105 Invalid, 0 Unknown, 8540 Unchecked, 17.3s Time] [2022-03-03 17:56:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102386 states. [2022-03-03 17:56:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102386 to 23567. [2022-03-03 17:56:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23567 states, 23566 states have (on average 3.1145294067724687) internal successors, (73397), 23566 states have internal predecessors, (73397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:04,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23567 states to 23567 states and 73397 transitions. [2022-03-03 17:56:04,296 INFO L78 Accepts]: Start accepts. Automaton has 23567 states and 73397 transitions. Word has length 152 [2022-03-03 17:56:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:04,296 INFO L470 AbstractCegarLoop]: Abstraction has 23567 states and 73397 transitions. [2022-03-03 17:56:04,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.9591836734693877) internal successors, (388), 98 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:04,296 INFO L276 IsEmpty]: Start isEmpty. Operand 23567 states and 73397 transitions. [2022-03-03 17:56:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:56:04,318 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:04,318 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:04,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:04,520 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,SelfDestructingSolverStorable43 [2022-03-03 17:56:04,520 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:04,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash -155623454, now seen corresponding path program 41 times [2022-03-03 17:56:04,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:04,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40628070] [2022-03-03 17:56:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:05,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:05,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40628070] [2022-03-03 17:56:05,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40628070] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:05,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400823692] [2022-03-03 17:56:05,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:56:05,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:05,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:05,156 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) [2022-03-03 17:56:05,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:56:05,308 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 17:56:05,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:05,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-03 17:56:05,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:05,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:56:05,363 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-03 17:56:05,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-03-03 17:56:05,671 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:56:05,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-03-03 17:56:06,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:56:06,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:56:07,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:56:07,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:56:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:07,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:08,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:56:08,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-03-03 17:56:08,918 INFO L353 Elim1Store]: treesize reduction 11, result has 38.9 percent of original size [2022-03-03 17:56:08,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 137 [2022-03-03 17:56:08,923 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-03-03 17:56:08,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 102 [2022-03-03 17:56:08,931 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-03-03 17:56:08,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 67 [2022-03-03 17:56:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:10,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400823692] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:10,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:10,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 38, 36] total 98 [2022-03-03 17:56:10,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213050861] [2022-03-03 17:56:10,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:10,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-03-03 17:56:10,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:10,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-03-03 17:56:10,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1164, Invalid=8262, Unknown=80, NotChecked=0, Total=9506 [2022-03-03 17:56:10,322 INFO L87 Difference]: Start difference. First operand 23567 states and 73397 transitions. Second operand has 98 states, 98 states have (on average 3.9489795918367347) internal successors, (387), 98 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:37,536 INFO L93 Difference]: Finished difference Result 79179 states and 223423 transitions. [2022-03-03 17:56:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-03-03 17:56:37,536 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.9489795918367347) internal successors, (387), 98 states have internal predecessors, (387), 0 states have call successors, (0), 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 152 [2022-03-03 17:56:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:37,709 INFO L225 Difference]: With dead ends: 79179 [2022-03-03 17:56:37,710 INFO L226 Difference]: Without dead ends: 70885 [2022-03-03 17:56:37,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 257 SyntacticMatches, 7 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34778 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=13869, Invalid=90695, Unknown=88, NotChecked=0, Total=104652 [2022-03-03 17:56:37,713 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 6112 mSDsluCounter, 18273 mSDsCounter, 0 mSdLazyCounter, 4520 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6112 SdHoareTripleChecker+Valid, 16356 SdHoareTripleChecker+Invalid, 10037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 4520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5150 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:37,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6112 Valid, 16356 Invalid, 10037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 4520 Invalid, 0 Unknown, 5150 Unchecked, 2.0s Time] [2022-03-03 17:56:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70885 states. [2022-03-03 17:56:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70885 to 26343. [2022-03-03 17:56:38,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26343 states, 26342 states have (on average 3.0935388353200213) internal successors, (81490), 26342 states have internal predecessors, (81490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26343 states to 26343 states and 81490 transitions. [2022-03-03 17:56:38,532 INFO L78 Accepts]: Start accepts. Automaton has 26343 states and 81490 transitions. Word has length 152 [2022-03-03 17:56:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:38,533 INFO L470 AbstractCegarLoop]: Abstraction has 26343 states and 81490 transitions. [2022-03-03 17:56:38,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.9489795918367347) internal successors, (387), 98 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 26343 states and 81490 transitions. [2022-03-03 17:56:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:56:38,558 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:38,558 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:38,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:38,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:38,759 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:38,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:38,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1030084406, now seen corresponding path program 42 times [2022-03-03 17:56:38,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:38,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396739398] [2022-03-03 17:56:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:38,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:39,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:39,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396739398] [2022-03-03 17:56:39,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396739398] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:39,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705118758] [2022-03-03 17:56:39,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:56:39,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:39,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:39,442 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) [2022-03-03 17:56:39,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:56:39,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 17:56:39,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:39,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-03 17:56:39,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:40,445 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:56:40,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:56:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 36 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-03-03 17:56:40,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:40,910 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:56:40,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:56:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-03 17:56:41,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705118758] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:41,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:41,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13, 15] total 53 [2022-03-03 17:56:41,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379833291] [2022-03-03 17:56:41,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:41,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-03 17:56:41,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:41,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-03 17:56:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:56:41,458 INFO L87 Difference]: Start difference. First operand 26343 states and 81490 transitions. Second operand has 53 states, 53 states have (on average 6.0754716981132075) internal successors, (322), 53 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:49,075 INFO L93 Difference]: Finished difference Result 48890 states and 144091 transitions. [2022-03-03 17:56:49,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-03 17:56:49,076 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.0754716981132075) internal successors, (322), 53 states have internal predecessors, (322), 0 states have call successors, (0), 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 152 [2022-03-03 17:56:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:49,188 INFO L225 Difference]: With dead ends: 48890 [2022-03-03 17:56:49,188 INFO L226 Difference]: Without dead ends: 48773 [2022-03-03 17:56:49,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 310 SyntacticMatches, 8 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2775, Invalid=15314, Unknown=1, NotChecked=0, Total=18090 [2022-03-03 17:56:49,189 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1958 mSDsluCounter, 6520 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 954 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:49,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1958 Valid, 6577 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1074 Invalid, 0 Unknown, 954 Unchecked, 0.5s Time] [2022-03-03 17:56:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48773 states. [2022-03-03 17:56:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48773 to 30511. [2022-03-03 17:56:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30511 states, 30510 states have (on average 3.096394624713209) internal successors, (94471), 30510 states have internal predecessors, (94471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30511 states to 30511 states and 94471 transitions. [2022-03-03 17:56:49,898 INFO L78 Accepts]: Start accepts. Automaton has 30511 states and 94471 transitions. Word has length 152 [2022-03-03 17:56:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:49,898 INFO L470 AbstractCegarLoop]: Abstraction has 30511 states and 94471 transitions. [2022-03-03 17:56:49,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.0754716981132075) internal successors, (322), 53 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 30511 states and 94471 transitions. [2022-03-03 17:56:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:56:49,929 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:49,929 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:49,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-03 17:56:50,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:50,130 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash -789139220, now seen corresponding path program 43 times [2022-03-03 17:56:50,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:50,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238676872] [2022-03-03 17:56:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:50,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:51,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:51,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238676872] [2022-03-03 17:56:51,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238676872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:51,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509755262] [2022-03-03 17:56:51,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:56:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:51,005 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) [2022-03-03 17:56:51,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:56:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:51,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-03 17:56:51,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:52,742 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:56:52,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:56:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:52,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:52,911 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:56:52,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-03-03 17:56:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:55,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509755262] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:55,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:55,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-03-03 17:56:55,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067434927] [2022-03-03 17:56:55,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:55,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-03 17:56:55,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-03 17:56:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=5734, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:56:55,011 INFO L87 Difference]: Start difference. First operand 30511 states and 94471 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:05,386 INFO L93 Difference]: Finished difference Result 58876 states and 167854 transitions. [2022-03-03 17:57:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-03 17:57:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 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 152 [2022-03-03 17:57:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:05,559 INFO L225 Difference]: With dead ends: 58876 [2022-03-03 17:57:05,559 INFO L226 Difference]: Without dead ends: 53695 [2022-03-03 17:57:05,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 254 SyntacticMatches, 9 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15397 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=6083, Invalid=44317, Unknown=0, NotChecked=0, Total=50400 [2022-03-03 17:57:05,561 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 2075 mSDsluCounter, 18919 mSDsCounter, 0 mSdLazyCounter, 4370 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 19180 SdHoareTripleChecker+Invalid, 5763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1107 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:05,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 19180 Invalid, 5763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4370 Invalid, 0 Unknown, 1107 Unchecked, 1.8s Time] [2022-03-03 17:57:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53695 states. [2022-03-03 17:57:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53695 to 21494. [2022-03-03 17:57:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21494 states, 21493 states have (on average 2.972223514632671) internal successors, (63882), 21493 states have internal predecessors, (63882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21494 states to 21494 states and 63882 transitions. [2022-03-03 17:57:06,126 INFO L78 Accepts]: Start accepts. Automaton has 21494 states and 63882 transitions. Word has length 152 [2022-03-03 17:57:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:06,127 INFO L470 AbstractCegarLoop]: Abstraction has 21494 states and 63882 transitions. [2022-03-03 17:57:06,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 21494 states and 63882 transitions. [2022-03-03 17:57:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:57:06,154 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:06,154 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:06,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:06,354 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,SelfDestructingSolverStorable46 [2022-03-03 17:57:06,355 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:06,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:06,355 INFO L85 PathProgramCache]: Analyzing trace with hash 461185782, now seen corresponding path program 44 times [2022-03-03 17:57:06,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:06,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213013272] [2022-03-03 17:57:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:06,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:07,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:07,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213013272] [2022-03-03 17:57:07,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213013272] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:07,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611327604] [2022-03-03 17:57:07,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:57:07,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:07,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:07,023 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) [2022-03-03 17:57:07,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:57:07,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:57:07,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:07,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-03 17:57:07,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:08,888 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:57:08,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:57:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:08,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:09,228 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:57:09,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-03 17:57:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 6 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:11,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611327604] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:11,703 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:11,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-03-03 17:57:11,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621259768] [2022-03-03 17:57:11,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:11,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-03 17:57:11,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-03 17:57:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=5910, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:57:11,704 INFO L87 Difference]: Start difference. First operand 21494 states and 63882 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 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... [2022-03-03 17:57:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-03 17:57:18,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8733 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3409, Invalid=27391, Unknown=0, NotChecked=0, Total=30800 [2022-03-03 17:57:18,842 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 1679 mSDsluCounter, 11722 mSDsCounter, 0 mSdLazyCounter, 3983 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 11658 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:18,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 11658 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3983 Invalid, 0 Unknown, 292 Unchecked, 1.6s Time] [2022-03-03 17:57:18,843 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:57:18,854 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 [2022-03-03 17:57:18,854 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:57:18,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:19,047 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,SelfDestructingSolverStorable47 [2022-03-03 17:57:19,048 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (21494states) and FLOYD_HOARE automaton (currently 99 states, 81 states before enhancement),while ReachableStatesComputation was computing reachable states (3198 states constructed, input type IntersectNwa). [2022-03-03 17:57:19,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:57:19,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:57:19,051 INFO L732 BasicCegarLoop]: Path program histogram: [44, 1, 1, 1, 1] [2022-03-03 17:57:19,052 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:57:19,052 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:57:19,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:57:19 BasicIcfg [2022-03-03 17:57:19,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:57:19,058 INFO L158 Benchmark]: Toolchain (without parser) took 747290.65ms. Allocated memory was 190.8MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 139.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 471.3MB. Max. memory is 8.0GB. [2022-03-03 17:57:19,058 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 156.6MB in the beginning and 156.5MB in the end (delta: 131.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:57:19,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.50ms. Allocated memory is still 190.8MB. Free memory was 139.7MB in the beginning and 164.4MB in the end (delta: -24.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-03 17:57:19,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.61ms. Allocated memory is still 190.8MB. Free memory was 164.4MB in the beginning and 162.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:57:19,059 INFO L158 Benchmark]: Boogie Preprocessor took 22.69ms. Allocated memory is still 190.8MB. Free memory was 162.6MB in the beginning and 161.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:57:19,059 INFO L158 Benchmark]: RCFGBuilder took 423.91ms. Allocated memory is still 190.8MB. Free memory was 161.2MB in the beginning and 143.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-03 17:57:19,059 INFO L158 Benchmark]: TraceAbstraction took 746572.37ms. Allocated memory was 190.8MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 143.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 474.9MB. Max. memory is 8.0GB. [2022-03-03 17:57:19,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 156.6MB in the beginning and 156.5MB in the end (delta: 131.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.50ms. Allocated memory is still 190.8MB. Free memory was 139.7MB in the beginning and 164.4MB in the end (delta: -24.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.61ms. Allocated memory is still 190.8MB. Free memory was 164.4MB in the beginning and 162.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.69ms. Allocated memory is still 190.8MB. Free memory was 162.6MB in the beginning and 161.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 423.91ms. Allocated memory is still 190.8MB. Free memory was 161.2MB in the beginning and 143.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 746572.37ms. Allocated memory was 190.8MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 143.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 474.9MB. 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: 86]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (21494states) and FLOYD_HOARE automaton (currently 99 states, 81 states before enhancement),while ReachableStatesComputation was computing reachable states (3198 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 81]: 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 (21494states) and FLOYD_HOARE automaton (currently 99 states, 81 states before enhancement),while ReachableStatesComputation was computing reachable states (3198 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 80]: 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 (21494states) and FLOYD_HOARE automaton (currently 99 states, 81 states before enhancement),while ReachableStatesComputation was computing reachable states (3198 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 128 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 746.5s, OverallIterations: 48, TraceHistogramMax: 6, PathProgramHistogramMax: 44, EmptinessCheckTime: 0.5s, AutomataDifference: 589.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 124041 SdHoareTripleChecker+Valid, 68.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124041 mSDsluCounter, 546852 SdHoareTripleChecker+Invalid, 57.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53754 IncrementalHoareTripleChecker+Unchecked, 579944 mSDsCounter, 10272 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154878 IncrementalHoareTripleChecker+Invalid, 218904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10272 mSolverCounterUnsat, 15729 mSDtfsCounter, 154878 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18775 GetRequests, 10296 SyntacticMatches, 793 SemanticMatches, 7686 ConstructedPredicates, 15 IntricatePredicates, 49 DeprecatedPredicates, 1113264 ImplicationChecksByTransitivity, 539.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30511occurred in iteration=46, InterpolantAutomatonStates: 5391, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.3s AutomataMinimizationTime, 47 MinimizatonAttempts, 640746 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 127.8s InterpolantComputationTime, 11777 NumberOfCodeBlocks, 11609 NumberOfCodeBlocksAsserted, 173 NumberOfCheckSat, 17352 ConstructedInterpolants, 1001 QuantifiedInterpolants, 233403 SizeOfPredicates, 1064 NumberOfNonLiveVariables, 13482 ConjunctsInSsa, 1866 ConjunctsInUnsatCore, 136 InterpolantComputations, 4 PerfectInterpolantSequences, 1786/9180 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