/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-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 13:01:11,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 13:01:11,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 13:01:11,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 13:01:11,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 13:01:11,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 13:01:11,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 13:01:11,405 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-16 13:01:11,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 13:01:11,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 13:01:11,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 13:01:11,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 13:01:11,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 13:01:11,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 13:01:11,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 13:01:11,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 13:01:11,428 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 13:01:11,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 13:01:11,429 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 13:01:11,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 13:01:11,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 13:01:11,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 13:01:11,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 13:01:11,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 13:01:11,431 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 13:01:11,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 13:01:11,431 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 13:01:11,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 13:01:11,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 13:01:11,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 13:01:11,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 13:01:11,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-16 13:01:11,653 INFO L275 PluginConnector]: CDTParser initialized [2022-02-16 13:01:11,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-02-16 13:01:11,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85af1db82/7f3a051905354d8092e7967bf2140600/FLAG8cb7e1919 [2022-02-16 13:01:12,061 INFO L306 CDTParser]: Found 1 translation units. [2022-02-16 13:01:12,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-02-16 13:01:12,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85af1db82/7f3a051905354d8092e7967bf2140600/FLAG8cb7e1919 [2022-02-16 13:01:12,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85af1db82/7f3a051905354d8092e7967bf2140600 [2022-02-16 13:01:12,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 13:01:12,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-16 13:01:12,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-16 13:01:12,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-16 13:01:12,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-16 13:01:12,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c37308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12, skipping insertion in model container [2022-02-16 13:01:12,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-16 13:01:12,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-16 13:01:12,662 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-figure3.wvr.c[2121,2134] [2022-02-16 13:01:12,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 13:01:12,671 INFO L203 MainTranslator]: Completed pre-run [2022-02-16 13:01:12,683 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-figure3.wvr.c[2121,2134] [2022-02-16 13:01:12,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 13:01:12,692 INFO L208 MainTranslator]: Completed translation [2022-02-16 13:01:12,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12 WrapperNode [2022-02-16 13:01:12,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-16 13:01:12,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 13:01:12,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 13:01:12,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 13:01:12,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,715 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2022-02-16 13:01:12,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 13:01:12,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 13:01:12,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 13:01:12,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 13:01:12,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 13:01:12,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 13:01:12,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 13:01:12,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 13:01:12,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (1/1) ... [2022-02-16 13:01:12,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 13:01:12,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:01:12,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-16 13:01:12,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-16 13:01:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-16 13:01:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-16 13:01:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-16 13:01:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-16 13:01:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-16 13:01:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-16 13:01:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-16 13:01:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-16 13:01:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-16 13:01:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-16 13:01:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 13:01:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 13:01:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-16 13:01:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-16 13:01:12,845 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 13:01:12,900 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 13:01:12,901 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 13:01:13,106 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 13:01:13,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 13:01:13,142 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-16 13:01:13,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:01:13 BoogieIcfgContainer [2022-02-16 13:01:13,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 13:01:13,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 13:01:13,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 13:01:13,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 13:01:13,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:01:12" (1/3) ... [2022-02-16 13:01:13,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c65be81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:01:13, skipping insertion in model container [2022-02-16 13:01:13,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:01:12" (2/3) ... [2022-02-16 13:01:13,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c65be81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:01:13, skipping insertion in model container [2022-02-16 13:01:13,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:01:13" (3/3) ... [2022-02-16 13:01:13,166 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2022-02-16 13:01:13,172 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 13:01:13,172 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 13:01:13,172 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 13:01:13,172 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 13:01:13,217 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,218 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,218 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,220 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,220 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,221 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,226 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,226 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,227 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,228 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,228 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,229 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,229 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,230 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,230 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,230 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,231 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,238 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,239 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,239 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,239 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:01:13,242 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-16 13:01:13,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 13:01:13,288 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 13:01:13,288 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-16 13:01:13,300 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-02-16 13:01:13,353 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:01:43,851 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1643764 transitions and produced 657295 states. [2022-02-16 13:01:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 657295 states, 536901 states have (on average 1.3279058895401572) internal successors, (712954), 657294 states have internal predecessors, (712954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:01:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-16 13:01:50,622 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:01:50,622 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] [2022-02-16 13:01:50,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:01:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:01:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 912408516, now seen corresponding path program 1 times [2022-02-16 13:01:50,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:01:50,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027069458] [2022-02-16 13:01:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:01:50,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:01:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:01:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:01:50,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:01:50,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027069458] [2022-02-16 13:01:50,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027069458] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:01:50,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:01:50,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:01:50,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752225807] [2022-02-16 13:01:50,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:01:50,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:01:50,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:01:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:01:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:01:57,810 INFO L87 Difference]: Start difference. First operand has 657295 states, 536901 states have (on average 1.3279058895401572) internal successors, (712954), 657294 states have internal predecessors, (712954), 0 states have call successors, (0), 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 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:02,876 INFO L93 Difference]: Finished difference Result 205683 states and 227908 transitions. [2022-02-16 13:02:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 13:02:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-02-16 13:02:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:03,095 INFO L225 Difference]: With dead ends: 205683 [2022-02-16 13:02:03,095 INFO L226 Difference]: Without dead ends: 25424 [2022-02-16 13:02:03,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-16 13:02:03,103 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 10 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:03,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 216 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:02:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25424 states. [2022-02-16 13:02:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25424 to 104. [2022-02-16 13:02:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2022-02-16 13:02:03,409 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 60 [2022-02-16 13:02:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:03,410 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2022-02-16 13:02:03,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2022-02-16 13:02:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-16 13:02:03,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:03,411 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] [2022-02-16 13:02:03,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 13:02:03,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1680698212, now seen corresponding path program 1 times [2022-02-16 13:02:03,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:03,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85908375] [2022-02-16 13:02:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:03,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:03,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:03,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85908375] [2022-02-16 13:02:03,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85908375] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:02:03,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:02:03,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:02:03,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406521978] [2022-02-16 13:02:03,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:02:03,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:02:03,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:02:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:02:03,494 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:03,535 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2022-02-16 13:02:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 13:02:03,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-16 13:02:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:03,536 INFO L225 Difference]: With dead ends: 108 [2022-02-16 13:02:03,536 INFO L226 Difference]: Without dead ends: 107 [2022-02-16 13:02:03,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-16 13:02:03,538 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:03,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 127 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:02:03,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-16 13:02:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2022-02-16 13:02:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 102 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2022-02-16 13:02:03,546 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 65 [2022-02-16 13:02:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:03,547 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2022-02-16 13:02:03,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2022-02-16 13:02:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-16 13:02:03,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:03,549 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] [2022-02-16 13:02:03,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 13:02:03,550 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1466147496, now seen corresponding path program 2 times [2022-02-16 13:02:03,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:03,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442906986] [2022-02-16 13:02:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:03,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:03,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:03,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442906986] [2022-02-16 13:02:03,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442906986] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:02:03,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:02:03,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-16 13:02:03,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262464308] [2022-02-16 13:02:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:02:03,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-16 13:02:03,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-16 13:02:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-16 13:02:03,688 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:03,751 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2022-02-16 13:02:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-16 13:02:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-16 13:02:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:03,753 INFO L225 Difference]: With dead ends: 131 [2022-02-16 13:02:03,753 INFO L226 Difference]: Without dead ends: 131 [2022-02-16 13:02:03,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-16 13:02:03,756 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 43 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:03,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 287 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-16 13:02:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-16 13:02:03,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2022-02-16 13:02:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.125) internal successors, (117), 104 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2022-02-16 13:02:03,768 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 65 [2022-02-16 13:02:03,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:03,768 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2022-02-16 13:02:03,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2022-02-16 13:02:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-16 13:02:03,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:03,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:02:03,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-16 13:02:03,769 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash -766845088, now seen corresponding path program 1 times [2022-02-16 13:02:03,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:03,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093614601] [2022-02-16 13:02:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:03,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:04,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:04,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093614601] [2022-02-16 13:02:04,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093614601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:04,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290053476] [2022-02-16 13:02:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:04,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:04,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:04,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:04,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-16 13:02:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:04,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-16 13:02:04,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-16 13:02:04,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-16 13:02:04,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290053476] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:02:04,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-16 13:02:04,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2022-02-16 13:02:04,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416414884] [2022-02-16 13:02:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:02:04,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-16 13:02:04,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-16 13:02:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-16 13:02:04,365 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:04,411 INFO L93 Difference]: Finished difference Result 197 states and 222 transitions. [2022-02-16 13:02:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 13:02:04,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-02-16 13:02:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:04,412 INFO L225 Difference]: With dead ends: 197 [2022-02-16 13:02:04,412 INFO L226 Difference]: Without dead ends: 165 [2022-02-16 13:02:04,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-16 13:02:04,413 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 36 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:04,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 315 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:02:04,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-16 13:02:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 140. [2022-02-16 13:02:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.158273381294964) internal successors, (161), 139 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions. [2022-02-16 13:02:04,416 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 70 [2022-02-16 13:02:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:04,416 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions. [2022-02-16 13:02:04,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions. [2022-02-16 13:02:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-16 13:02:04,417 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:04,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:02:04,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:04,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:04,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:04,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:04,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1918282112, now seen corresponding path program 2 times [2022-02-16 13:02:04,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:04,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248225188] [2022-02-16 13:02:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:04,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:04,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:04,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248225188] [2022-02-16 13:02:04,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248225188] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:04,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006242152] [2022-02-16 13:02:04,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-16 13:02:04,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:04,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:04,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-16 13:02:04,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 13:02:04,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:04,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-16 13:02:04,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:04,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:05,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006242152] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:05,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:05,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-16 13:02:05,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640358288] [2022-02-16 13:02:05,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:05,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-16 13:02:05,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-16 13:02:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-02-16 13:02:05,196 INFO L87 Difference]: Start difference. First operand 140 states and 161 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:06,309 INFO L93 Difference]: Finished difference Result 322 states and 381 transitions. [2022-02-16 13:02:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-16 13:02:06,310 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 75 [2022-02-16 13:02:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:06,310 INFO L225 Difference]: With dead ends: 322 [2022-02-16 13:02:06,311 INFO L226 Difference]: Without dead ends: 320 [2022-02-16 13:02:06,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=430, Invalid=2120, Unknown=0, NotChecked=0, Total=2550 [2022-02-16 13:02:06,312 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 195 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:06,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 589 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-16 13:02:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-02-16 13:02:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 186. [2022-02-16 13:02:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.2162162162162162) internal successors, (225), 185 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 225 transitions. [2022-02-16 13:02:06,316 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 225 transitions. Word has length 75 [2022-02-16 13:02:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:06,316 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 225 transitions. [2022-02-16 13:02:06,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 225 transitions. [2022-02-16 13:02:06,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-16 13:02:06,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:06,317 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:02:06,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-16 13:02:06,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:06,532 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash 19322932, now seen corresponding path program 3 times [2022-02-16 13:02:06,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:06,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840493194] [2022-02-16 13:02:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:06,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:06,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:06,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840493194] [2022-02-16 13:02:06,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840493194] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:06,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632792971] [2022-02-16 13:02:06,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-16 13:02:06,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:06,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:06,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:06,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-16 13:02:06,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-16 13:02:06,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:06,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-16 13:02:06,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:06,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:07,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632792971] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:07,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:07,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2022-02-16 13:02:07,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359413299] [2022-02-16 13:02:07,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:07,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-16 13:02:07,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-16 13:02:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-02-16 13:02:07,108 INFO L87 Difference]: Start difference. First operand 186 states and 225 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:08,517 INFO L93 Difference]: Finished difference Result 359 states and 441 transitions. [2022-02-16 13:02:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-16 13:02:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-16 13:02:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:08,519 INFO L225 Difference]: With dead ends: 359 [2022-02-16 13:02:08,519 INFO L226 Difference]: Without dead ends: 353 [2022-02-16 13:02:08,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=565, Invalid=2741, Unknown=0, NotChecked=0, Total=3306 [2022-02-16 13:02:08,520 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 114 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:08,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 936 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-16 13:02:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-16 13:02:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 247. [2022-02-16 13:02:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.2398373983739837) internal successors, (305), 246 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 305 transitions. [2022-02-16 13:02:08,800 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 305 transitions. Word has length 75 [2022-02-16 13:02:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:08,801 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 305 transitions. [2022-02-16 13:02:08,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 305 transitions. [2022-02-16 13:02:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-16 13:02:08,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:08,801 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:02:08,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:09,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:09,002 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:09,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1774563226, now seen corresponding path program 4 times [2022-02-16 13:02:09,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:09,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732588317] [2022-02-16 13:02:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:09,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:09,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:09,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732588317] [2022-02-16 13:02:09,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732588317] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:09,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345715995] [2022-02-16 13:02:09,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-16 13:02:09,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:09,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:09,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:09,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-16 13:02:09,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-16 13:02:09,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:09,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-16 13:02:09,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:09,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:09,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345715995] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:09,477 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:09,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-16 13:02:09,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715545281] [2022-02-16 13:02:09,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:09,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-16 13:02:09,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-16 13:02:09,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-02-16 13:02:09,478 INFO L87 Difference]: Start difference. First operand 247 states and 305 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:10,188 INFO L93 Difference]: Finished difference Result 442 states and 540 transitions. [2022-02-16 13:02:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-16 13:02:10,188 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 75 [2022-02-16 13:02:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:10,189 INFO L225 Difference]: With dead ends: 442 [2022-02-16 13:02:10,189 INFO L226 Difference]: Without dead ends: 441 [2022-02-16 13:02:10,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=500, Invalid=2470, Unknown=0, NotChecked=0, Total=2970 [2022-02-16 13:02:10,190 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 258 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:10,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 655 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-16 13:02:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-16 13:02:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 259. [2022-02-16 13:02:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.244186046511628) internal successors, (321), 258 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 321 transitions. [2022-02-16 13:02:10,195 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 321 transitions. Word has length 75 [2022-02-16 13:02:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:10,195 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 321 transitions. [2022-02-16 13:02:10,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 321 transitions. [2022-02-16 13:02:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-16 13:02:10,195 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:10,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:02:10,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-16 13:02:10,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:10,407 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash -582799026, now seen corresponding path program 5 times [2022-02-16 13:02:10,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:10,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676273145] [2022-02-16 13:02:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:10,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:10,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:10,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676273145] [2022-02-16 13:02:10,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676273145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:10,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409752772] [2022-02-16 13:02:10,528 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-16 13:02:10,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:10,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:10,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-16 13:02:10,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 13:02:10,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:10,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-16 13:02:10,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:10,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:11,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409752772] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:11,018 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:11,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-02-16 13:02:11,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929396171] [2022-02-16 13:02:11,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:11,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-16 13:02:11,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:11,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-16 13:02:11,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-16 13:02:11,020 INFO L87 Difference]: Start difference. First operand 259 states and 321 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:11,919 INFO L93 Difference]: Finished difference Result 478 states and 586 transitions. [2022-02-16 13:02:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-16 13:02:11,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 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 75 [2022-02-16 13:02:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:11,921 INFO L225 Difference]: With dead ends: 478 [2022-02-16 13:02:11,921 INFO L226 Difference]: Without dead ends: 472 [2022-02-16 13:02:11,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2022-02-16 13:02:11,922 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 348 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:11,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1138 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-16 13:02:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-02-16 13:02:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 276. [2022-02-16 13:02:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.2545454545454546) internal successors, (345), 275 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) [2022-02-16 13:02:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 345 transitions. [2022-02-16 13:02:11,926 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 345 transitions. Word has length 75 [2022-02-16 13:02:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:11,926 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 345 transitions. [2022-02-16 13:02:11,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 345 transitions. [2022-02-16 13:02:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-16 13:02:11,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:11,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:02:11,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:12,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:12,146 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:12,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:12,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1396772198, now seen corresponding path program 6 times [2022-02-16 13:02:12,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:12,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139238335] [2022-02-16 13:02:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:12,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:12,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:12,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139238335] [2022-02-16 13:02:12,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139238335] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:12,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762186410] [2022-02-16 13:02:12,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-16 13:02:12,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:12,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:12,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:12,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-16 13:02:12,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-16 13:02:12,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:12,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-16 13:02:12,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:12,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:12,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762186410] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:12,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:12,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-02-16 13:02:12,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249229167] [2022-02-16 13:02:12,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:12,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-16 13:02:12,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-16 13:02:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-02-16 13:02:12,603 INFO L87 Difference]: Start difference. First operand 276 states and 345 transitions. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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) [2022-02-16 13:02:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:13,189 INFO L93 Difference]: Finished difference Result 398 states and 495 transitions. [2022-02-16 13:02:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-16 13:02:13,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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 75 [2022-02-16 13:02:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:13,190 INFO L225 Difference]: With dead ends: 398 [2022-02-16 13:02:13,190 INFO L226 Difference]: Without dead ends: 398 [2022-02-16 13:02:13,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=424, Invalid=1832, Unknown=0, NotChecked=0, Total=2256 [2022-02-16 13:02:13,191 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 142 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:13,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 653 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-16 13:02:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-02-16 13:02:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 277. [2022-02-16 13:02:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.25) internal successors, (345), 276 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) [2022-02-16 13:02:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 345 transitions. [2022-02-16 13:02:13,195 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 345 transitions. Word has length 75 [2022-02-16 13:02:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:13,196 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 345 transitions. [2022-02-16 13:02:13,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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) [2022-02-16 13:02:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 345 transitions. [2022-02-16 13:02:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-16 13:02:13,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:13,196 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-16 13:02:13,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:13,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:13,397 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:13,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:13,397 INFO L85 PathProgramCache]: Analyzing trace with hash -181239356, now seen corresponding path program 7 times [2022-02-16 13:02:13,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:13,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310863511] [2022-02-16 13:02:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:13,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:13,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:13,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310863511] [2022-02-16 13:02:13,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310863511] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:13,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279235426] [2022-02-16 13:02:13,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-16 13:02:13,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:13,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:13,513 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:13,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-16 13:02:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:13,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-16 13:02:13,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-16 13:02:13,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-16 13:02:13,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279235426] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:13,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:13,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-02-16 13:02:13,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085674472] [2022-02-16 13:02:13,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:13,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-16 13:02:13,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-16 13:02:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-16 13:02:13,859 INFO L87 Difference]: Start difference. First operand 277 states and 345 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:13,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:13,943 INFO L93 Difference]: Finished difference Result 525 states and 657 transitions. [2022-02-16 13:02:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-16 13:02:13,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 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 80 [2022-02-16 13:02:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:13,951 INFO L225 Difference]: With dead ends: 525 [2022-02-16 13:02:13,951 INFO L226 Difference]: Without dead ends: 486 [2022-02-16 13:02:13,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-16 13:02:13,952 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 156 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:13,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 610 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-16 13:02:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-02-16 13:02:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 379. [2022-02-16 13:02:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.2804232804232805) internal successors, (484), 378 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 484 transitions. [2022-02-16 13:02:13,964 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 484 transitions. Word has length 80 [2022-02-16 13:02:13,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:13,965 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 484 transitions. [2022-02-16 13:02:13,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 484 transitions. [2022-02-16 13:02:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:02:13,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:13,966 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:02:13,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:14,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:14,183 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 636456216, now seen corresponding path program 8 times [2022-02-16 13:02:14,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:14,183 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952063198] [2022-02-16 13:02:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:14,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:14,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:14,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952063198] [2022-02-16 13:02:14,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952063198] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:14,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181566579] [2022-02-16 13:02:14,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-16 13:02:14,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:14,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:14,421 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:14,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-16 13:02:14,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 13:02:14,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:14,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:02:14,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:14,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:15,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181566579] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:15,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:15,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 33 [2022-02-16 13:02:15,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336832258] [2022-02-16 13:02:15,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:15,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-16 13:02:15,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-16 13:02:15,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-02-16 13:02:15,134 INFO L87 Difference]: Start difference. First operand 379 states and 484 transitions. Second operand has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:19,922 INFO L93 Difference]: Finished difference Result 773 states and 970 transitions. [2022-02-16 13:02:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-16 13:02:19,922 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-02-16 13:02:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:19,923 INFO L225 Difference]: With dead ends: 773 [2022-02-16 13:02:19,923 INFO L226 Difference]: Without dead ends: 755 [2022-02-16 13:02:19,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=988, Invalid=7202, Unknown=0, NotChecked=0, Total=8190 [2022-02-16 13:02:19,926 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 242 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:19,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1158 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-16 13:02:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-02-16 13:02:19,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 429. [2022-02-16 13:02:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.2710280373831775) internal successors, (544), 428 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 544 transitions. [2022-02-16 13:02:19,932 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 544 transitions. Word has length 85 [2022-02-16 13:02:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:19,933 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 544 transitions. [2022-02-16 13:02:19,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 544 transitions. [2022-02-16 13:02:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:02:19,933 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:19,934 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:02:19,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:20,150 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,SelfDestructingSolverStorable10 [2022-02-16 13:02:20,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 260654966, now seen corresponding path program 9 times [2022-02-16 13:02:20,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:20,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813019961] [2022-02-16 13:02:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:20,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:20,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:20,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813019961] [2022-02-16 13:02:20,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813019961] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:20,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966855752] [2022-02-16 13:02:20,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-16 13:02:20,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:20,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:20,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:20,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-16 13:02:20,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-16 13:02:20,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:20,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:02:20,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:20,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:20,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966855752] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:20,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:20,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-16 13:02:20,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346089584] [2022-02-16 13:02:20,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-16 13:02:20,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-16 13:02:20,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-02-16 13:02:20,996 INFO L87 Difference]: Start difference. First operand 429 states and 544 transitions. Second operand has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:25,834 INFO L93 Difference]: Finished difference Result 1055 states and 1304 transitions. [2022-02-16 13:02:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-16 13:02:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2022-02-16 13:02:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:25,836 INFO L225 Difference]: With dead ends: 1055 [2022-02-16 13:02:25,836 INFO L226 Difference]: Without dead ends: 1053 [2022-02-16 13:02:25,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3619 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1287, Invalid=9843, Unknown=0, NotChecked=0, Total=11130 [2022-02-16 13:02:25,839 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 368 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:25,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1621 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-16 13:02:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-02-16 13:02:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 615. [2022-02-16 13:02:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.3322475570032573) internal successors, (818), 614 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 818 transitions. [2022-02-16 13:02:25,848 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 818 transitions. Word has length 85 [2022-02-16 13:02:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:25,848 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 818 transitions. [2022-02-16 13:02:25,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 818 transitions. [2022-02-16 13:02:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:02:25,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:25,851 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:02:25,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:26,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:26,067 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2096707286, now seen corresponding path program 10 times [2022-02-16 13:02:26,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:26,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381463569] [2022-02-16 13:02:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:26,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:26,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:26,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381463569] [2022-02-16 13:02:26,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381463569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:26,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972494420] [2022-02-16 13:02:26,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-16 13:02:26,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:26,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:26,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:26,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-16 13:02:26,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-16 13:02:26,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:02:26,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:26,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:27,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972494420] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:27,033 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:27,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 33 [2022-02-16 13:02:27,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175648828] [2022-02-16 13:02:27,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:27,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-16 13:02:27,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:27,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-16 13:02:27,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-02-16 13:02:27,035 INFO L87 Difference]: Start difference. First operand 615 states and 818 transitions. Second operand has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:35,606 INFO L93 Difference]: Finished difference Result 1343 states and 1721 transitions. [2022-02-16 13:02:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-16 13:02:35,606 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-02-16 13:02:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:35,608 INFO L225 Difference]: With dead ends: 1343 [2022-02-16 13:02:35,608 INFO L226 Difference]: Without dead ends: 1317 [2022-02-16 13:02:35,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5104 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1710, Invalid=13542, Unknown=0, NotChecked=0, Total=15252 [2022-02-16 13:02:35,612 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 360 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:35,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1370 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-16 13:02:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-02-16 13:02:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 878. [2022-02-16 13:02:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.3694412770809579) internal successors, (1201), 877 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1201 transitions. [2022-02-16 13:02:35,625 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1201 transitions. Word has length 85 [2022-02-16 13:02:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:35,625 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1201 transitions. [2022-02-16 13:02:35,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1201 transitions. [2022-02-16 13:02:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:02:35,626 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:35,626 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:02:35,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:35,843 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,SelfDestructingSolverStorable12 [2022-02-16 13:02:35,843 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:35,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash 375396672, now seen corresponding path program 11 times [2022-02-16 13:02:35,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:35,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871948918] [2022-02-16 13:02:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:35,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:36,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:36,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871948918] [2022-02-16 13:02:36,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871948918] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:36,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175318440] [2022-02-16 13:02:36,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-16 13:02:36,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:36,052 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:36,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-16 13:02:36,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-16 13:02:36,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:36,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:02:36,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:36,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:36,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175318440] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:36,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:36,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-16 13:02:36,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126531444] [2022-02-16 13:02:36,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:36,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-16 13:02:36,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-16 13:02:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-02-16 13:02:36,677 INFO L87 Difference]: Start difference. First operand 878 states and 1201 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:39,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:39,992 INFO L93 Difference]: Finished difference Result 1677 states and 2206 transitions. [2022-02-16 13:02:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-16 13:02:39,992 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 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 [2022-02-16 13:02:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:39,994 INFO L225 Difference]: With dead ends: 1677 [2022-02-16 13:02:39,994 INFO L226 Difference]: Without dead ends: 1623 [2022-02-16 13:02:39,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=975, Invalid=7767, Unknown=0, NotChecked=0, Total=8742 [2022-02-16 13:02:39,998 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 218 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:39,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1352 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-16 13:02:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-02-16 13:02:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1101. [2022-02-16 13:02:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 1.3681818181818182) internal successors, (1505), 1100 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1505 transitions. [2022-02-16 13:02:40,013 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1505 transitions. Word has length 85 [2022-02-16 13:02:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:40,014 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1505 transitions. [2022-02-16 13:02:40,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1505 transitions. [2022-02-16 13:02:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:02:40,016 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:40,016 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:02:40,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:40,233 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,SelfDestructingSolverStorable13 [2022-02-16 13:02:40,233 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:40,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1125299202, now seen corresponding path program 12 times [2022-02-16 13:02:40,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:40,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518305246] [2022-02-16 13:02:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:40,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:40,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:40,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518305246] [2022-02-16 13:02:40,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518305246] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:40,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729507379] [2022-02-16 13:02:40,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-16 13:02:40,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:40,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:40,464 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:40,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-16 13:02:40,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-16 13:02:40,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:40,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:02:40,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:40,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:41,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729507379] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:41,137 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:41,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-16 13:02:41,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110783732] [2022-02-16 13:02:41,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:41,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-16 13:02:41,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:41,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-16 13:02:41,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-02-16 13:02:41,138 INFO L87 Difference]: Start difference. First operand 1101 states and 1505 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:46,045 INFO L93 Difference]: Finished difference Result 1923 states and 2506 transitions. [2022-02-16 13:02:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-16 13:02:46,045 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2022-02-16 13:02:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:46,048 INFO L225 Difference]: With dead ends: 1923 [2022-02-16 13:02:46,048 INFO L226 Difference]: Without dead ends: 1919 [2022-02-16 13:02:46,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2887 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1129, Invalid=8183, Unknown=0, NotChecked=0, Total=9312 [2022-02-16 13:02:46,051 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 317 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:46,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1703 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-16 13:02:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-02-16 13:02:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1101. [2022-02-16 13:02:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 1.3663636363636364) internal successors, (1503), 1100 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1503 transitions. [2022-02-16 13:02:46,066 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1503 transitions. Word has length 85 [2022-02-16 13:02:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:46,067 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1503 transitions. [2022-02-16 13:02:46,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1503 transitions. [2022-02-16 13:02:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:02:46,068 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:46,068 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:02:46,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-16 13:02:46,285 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,SelfDestructingSolverStorable14 [2022-02-16 13:02:46,286 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash 812305842, now seen corresponding path program 13 times [2022-02-16 13:02:46,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:46,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641650365] [2022-02-16 13:02:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:46,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:46,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:46,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641650365] [2022-02-16 13:02:46,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641650365] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:46,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762862860] [2022-02-16 13:02:46,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-16 13:02:46,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:46,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:46,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:46,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-16 13:02:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:46,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:02:46,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:46,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:47,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762862860] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:47,111 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:47,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2022-02-16 13:02:47,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475103948] [2022-02-16 13:02:47,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:47,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-16 13:02:47,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-16 13:02:47,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2022-02-16 13:02:47,113 INFO L87 Difference]: Start difference. First operand 1101 states and 1503 transitions. Second operand has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:02:53,339 INFO L93 Difference]: Finished difference Result 1683 states and 2224 transitions. [2022-02-16 13:02:53,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-16 13:02:53,339 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 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 [2022-02-16 13:02:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:02:53,342 INFO L225 Difference]: With dead ends: 1683 [2022-02-16 13:02:53,342 INFO L226 Difference]: Without dead ends: 1665 [2022-02-16 13:02:53,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3810 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1445, Invalid=10545, Unknown=0, NotChecked=0, Total=11990 [2022-02-16 13:02:53,343 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 291 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:02:53,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 1854 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-16 13:02:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-02-16 13:02:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1119. [2022-02-16 13:02:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.3631484794275492) internal successors, (1524), 1118 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1524 transitions. [2022-02-16 13:02:53,357 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1524 transitions. Word has length 85 [2022-02-16 13:02:53,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:02:53,357 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1524 transitions. [2022-02-16 13:02:53,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:02:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1524 transitions. [2022-02-16 13:02:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:02:53,358 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:02:53,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:02:53,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-16 13:02:53,577 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,SelfDestructingSolverStorable15 [2022-02-16 13:02:53,577 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:02:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:02:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 436504592, now seen corresponding path program 14 times [2022-02-16 13:02:53,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:02:53,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227805309] [2022-02-16 13:02:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:02:53,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:02:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:02:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:53,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:02:53,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227805309] [2022-02-16 13:02:53,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227805309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:02:53,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81454451] [2022-02-16 13:02:53,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-16 13:02:53,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:02:53,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:02:53,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:02:53,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-16 13:02:53,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 13:02:53,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:02:53,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:02:53,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:02:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:54,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:02:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:02:54,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81454451] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:02:54,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:02:54,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-16 13:02:54,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774867853] [2022-02-16 13:02:54,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:02:54,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-16 13:02:54,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:02:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-16 13:02:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-02-16 13:02:54,336 INFO L87 Difference]: Start difference. First operand 1119 states and 1524 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:02,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:02,315 INFO L93 Difference]: Finished difference Result 1983 states and 2531 transitions. [2022-02-16 13:03:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-16 13:03:02,315 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2022-02-16 13:03:02,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:02,317 INFO L225 Difference]: With dead ends: 1983 [2022-02-16 13:03:02,317 INFO L226 Difference]: Without dead ends: 1980 [2022-02-16 13:03:02,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1990, Invalid=14780, Unknown=0, NotChecked=0, Total=16770 [2022-02-16 13:03:02,320 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 580 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:02,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1707 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-16 13:03:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2022-02-16 13:03:02,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1221. [2022-02-16 13:03:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.3672131147540985) internal successors, (1668), 1220 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1668 transitions. [2022-02-16 13:03:02,353 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1668 transitions. Word has length 85 [2022-02-16 13:03:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:02,354 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1668 transitions. [2022-02-16 13:03:02,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1668 transitions. [2022-02-16 13:03:02,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:03:02,355 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:02,355 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:03:02,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-16 13:03:02,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:02,572 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1920857660, now seen corresponding path program 15 times [2022-02-16 13:03:02,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:02,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816597417] [2022-02-16 13:03:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:02,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:02,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:02,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816597417] [2022-02-16 13:03:02,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816597417] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:02,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684581839] [2022-02-16 13:03:02,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-16 13:03:02,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:02,780 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:02,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-16 13:03:02,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-16 13:03:02,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:03:02,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:03:02,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:03,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:03,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684581839] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:03,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:03,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2022-02-16 13:03:03,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521429351] [2022-02-16 13:03:03,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:03,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-16 13:03:03,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-16 13:03:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-02-16 13:03:03,394 INFO L87 Difference]: Start difference. First operand 1221 states and 1668 transitions. Second operand has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:13,505 INFO L93 Difference]: Finished difference Result 2049 states and 2661 transitions. [2022-02-16 13:03:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-16 13:03:13,508 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 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 [2022-02-16 13:03:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:13,511 INFO L225 Difference]: With dead ends: 2049 [2022-02-16 13:03:13,511 INFO L226 Difference]: Without dead ends: 2023 [2022-02-16 13:03:13,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7084 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2264, Invalid=18042, Unknown=0, NotChecked=0, Total=20306 [2022-02-16 13:03:13,523 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 515 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:13,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1560 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-16 13:03:13,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-02-16 13:03:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1276. [2022-02-16 13:03:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 1.3694117647058823) internal successors, (1746), 1275 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1746 transitions. [2022-02-16 13:03:13,554 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1746 transitions. Word has length 85 [2022-02-16 13:03:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:13,554 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1746 transitions. [2022-02-16 13:03:13,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1746 transitions. [2022-02-16 13:03:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:03:13,573 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:13,573 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:03:13,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-16 13:03:13,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-16 13:03:13,787 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash 551246298, now seen corresponding path program 16 times [2022-02-16 13:03:13,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:13,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137969695] [2022-02-16 13:03:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:13,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:13,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:13,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137969695] [2022-02-16 13:03:13,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137969695] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:13,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333116972] [2022-02-16 13:03:13,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-16 13:03:13,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:13,943 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:13,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-16 13:03:13,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-16 13:03:13,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:03:13,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:03:13,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:14,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:14,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333116972] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:14,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:14,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-16 13:03:14,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141304140] [2022-02-16 13:03:14,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:14,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-16 13:03:14,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-16 13:03:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-02-16 13:03:14,552 INFO L87 Difference]: Start difference. First operand 1276 states and 1746 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:19,222 INFO L93 Difference]: Finished difference Result 2154 states and 2819 transitions. [2022-02-16 13:03:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-16 13:03:19,222 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 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 [2022-02-16 13:03:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:19,225 INFO L225 Difference]: With dead ends: 2154 [2022-02-16 13:03:19,225 INFO L226 Difference]: Without dead ends: 2100 [2022-02-16 13:03:19,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5034 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1652, Invalid=13848, Unknown=0, NotChecked=0, Total=15500 [2022-02-16 13:03:19,227 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 269 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:19,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 1583 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-16 13:03:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-02-16 13:03:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1443. [2022-02-16 13:03:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3703190013869626) internal successors, (1976), 1442 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1976 transitions. [2022-02-16 13:03:19,262 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1976 transitions. Word has length 85 [2022-02-16 13:03:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:19,262 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1976 transitions. [2022-02-16 13:03:19,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1976 transitions. [2022-02-16 13:03:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:03:19,280 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:19,280 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:03:19,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-16 13:03:19,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:19,514 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:19,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1436018084, now seen corresponding path program 17 times [2022-02-16 13:03:19,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:19,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156945570] [2022-02-16 13:03:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:19,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:19,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:19,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156945570] [2022-02-16 13:03:19,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156945570] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:19,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101807638] [2022-02-16 13:03:19,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-16 13:03:19,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:19,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:19,708 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:19,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-16 13:03:19,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-16 13:03:19,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:03:19,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-16 13:03:19,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:20,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:20,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101807638] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:20,564 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:20,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2022-02-16 13:03:20,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696116419] [2022-02-16 13:03:20,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:20,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-16 13:03:20,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-16 13:03:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-02-16 13:03:20,565 INFO L87 Difference]: Start difference. First operand 1443 states and 1976 transitions. Second operand has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:25,284 INFO L93 Difference]: Finished difference Result 2017 states and 2708 transitions. [2022-02-16 13:03:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-16 13:03:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-02-16 13:03:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:25,288 INFO L225 Difference]: With dead ends: 2017 [2022-02-16 13:03:25,288 INFO L226 Difference]: Without dead ends: 2016 [2022-02-16 13:03:25,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2805 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1817, Invalid=9739, Unknown=0, NotChecked=0, Total=11556 [2022-02-16 13:03:25,290 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 634 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:25,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 2141 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-16 13:03:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-02-16 13:03:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1471. [2022-02-16 13:03:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 1.3693877551020408) internal successors, (2013), 1470 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2013 transitions. [2022-02-16 13:03:25,315 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2013 transitions. Word has length 85 [2022-02-16 13:03:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:25,315 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 2013 transitions. [2022-02-16 13:03:25,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2013 transitions. [2022-02-16 13:03:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:03:25,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:25,317 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:03:25,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-16 13:03:25,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:25,531 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 501586960, now seen corresponding path program 18 times [2022-02-16 13:03:25,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:25,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143135690] [2022-02-16 13:03:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:25,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:25,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:25,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143135690] [2022-02-16 13:03:25,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143135690] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:25,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161484651] [2022-02-16 13:03:25,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-16 13:03:25,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:25,768 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:25,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-16 13:03:25,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-16 13:03:25,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:03:25,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:03:25,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:26,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:26,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161484651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:26,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:26,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2022-02-16 13:03:26,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141227158] [2022-02-16 13:03:26,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:26,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-16 13:03:26,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:26,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-16 13:03:26,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-02-16 13:03:26,335 INFO L87 Difference]: Start difference. First operand 1471 states and 2013 transitions. Second operand has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:32,911 INFO L93 Difference]: Finished difference Result 2215 states and 2922 transitions. [2022-02-16 13:03:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-16 13:03:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 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 [2022-02-16 13:03:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:32,914 INFO L225 Difference]: With dead ends: 2215 [2022-02-16 13:03:32,915 INFO L226 Difference]: Without dead ends: 2206 [2022-02-16 13:03:32,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10463 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3309, Invalid=25761, Unknown=0, NotChecked=0, Total=29070 [2022-02-16 13:03:32,918 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 428 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:32,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1884 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-16 13:03:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-02-16 13:03:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1489. [2022-02-16 13:03:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 1.3736559139784945) internal successors, (2044), 1488 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:32,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2044 transitions. [2022-02-16 13:03:32,934 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2044 transitions. Word has length 85 [2022-02-16 13:03:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:32,935 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 2044 transitions. [2022-02-16 13:03:32,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2044 transitions. [2022-02-16 13:03:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:03:32,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:32,937 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:03:32,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-16 13:03:33,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:33,155 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1239765182, now seen corresponding path program 19 times [2022-02-16 13:03:33,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:33,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032549477] [2022-02-16 13:03:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:33,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:33,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:33,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032549477] [2022-02-16 13:03:33,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032549477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:33,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637321880] [2022-02-16 13:03:33,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-16 13:03:33,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:33,340 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:33,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-16 13:03:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:33,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:03:33,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:33,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:33,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637321880] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:33,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:33,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-16 13:03:33,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937718044] [2022-02-16 13:03:33,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:33,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-16 13:03:33,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-16 13:03:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-02-16 13:03:33,932 INFO L87 Difference]: Start difference. First operand 1489 states and 2044 transitions. Second operand has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 27 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:37,681 INFO L93 Difference]: Finished difference Result 2224 states and 2969 transitions. [2022-02-16 13:03:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-16 13:03:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 27 states have internal predecessors, (122), 0 states have call successors, (0), 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 [2022-02-16 13:03:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:37,684 INFO L225 Difference]: With dead ends: 2224 [2022-02-16 13:03:37,684 INFO L226 Difference]: Without dead ends: 2206 [2022-02-16 13:03:37,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4217 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1487, Invalid=11395, Unknown=0, NotChecked=0, Total=12882 [2022-02-16 13:03:37,686 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 283 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:37,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 1246 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-16 13:03:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-02-16 13:03:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1508. [2022-02-16 13:03:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 1.3722627737226278) internal successors, (2068), 1507 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2068 transitions. [2022-02-16 13:03:37,702 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2068 transitions. Word has length 85 [2022-02-16 13:03:37,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:37,703 INFO L470 AbstractCegarLoop]: Abstraction has 1508 states and 2068 transitions. [2022-02-16 13:03:37,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 27 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2068 transitions. [2022-02-16 13:03:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-16 13:03:37,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:37,704 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-16 13:03:37,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-16 13:03:37,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:37,921 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1986150040, now seen corresponding path program 20 times [2022-02-16 13:03:37,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:37,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357675544] [2022-02-16 13:03:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:37,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:38,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:38,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357675544] [2022-02-16 13:03:38,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357675544] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:38,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034489407] [2022-02-16 13:03:38,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-16 13:03:38,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:38,087 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:38,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-16 13:03:38,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 13:03:38,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:03:38,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:03:38,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:38,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:38,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034489407] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:38,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:38,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-16 13:03:38,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58623829] [2022-02-16 13:03:38,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:38,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-16 13:03:38,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-16 13:03:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-02-16 13:03:38,651 INFO L87 Difference]: Start difference. First operand 1508 states and 2068 transitions. Second operand has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:40,344 INFO L93 Difference]: Finished difference Result 2058 states and 2764 transitions. [2022-02-16 13:03:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-16 13:03:40,345 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 states have internal predecessors, (124), 0 states have call successors, (0), 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 [2022-02-16 13:03:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:40,347 INFO L225 Difference]: With dead ends: 2058 [2022-02-16 13:03:40,347 INFO L226 Difference]: Without dead ends: 2043 [2022-02-16 13:03:40,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 154 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=843, Invalid=5477, Unknown=0, NotChecked=0, Total=6320 [2022-02-16 13:03:40,349 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 286 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:40,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1460 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-16 13:03:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-02-16 13:03:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1488. [2022-02-16 13:03:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.3691997310020174) internal successors, (2036), 1487 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2036 transitions. [2022-02-16 13:03:40,369 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2036 transitions. Word has length 85 [2022-02-16 13:03:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:40,369 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2036 transitions. [2022-02-16 13:03:40,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2036 transitions. [2022-02-16 13:03:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-16 13:03:40,371 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:40,371 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-16 13:03:40,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-16 13:03:40,588 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,SelfDestructingSolverStorable22 [2022-02-16 13:03:40,588 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:40,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1379335776, now seen corresponding path program 21 times [2022-02-16 13:03:40,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:40,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311562114] [2022-02-16 13:03:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:40,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:40,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:40,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311562114] [2022-02-16 13:03:40,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311562114] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:40,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458195957] [2022-02-16 13:03:40,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-16 13:03:40,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:40,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:40,714 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:40,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-16 13:03:40,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-16 13:03:40,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:03:40,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-16 13:03:40,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:40,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:41,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458195957] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:41,213 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:41,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-16 13:03:41,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836533188] [2022-02-16 13:03:41,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:41,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-16 13:03:41,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-16 13:03:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-02-16 13:03:41,214 INFO L87 Difference]: Start difference. First operand 1488 states and 2036 transitions. Second operand has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:03:41,363 INFO L93 Difference]: Finished difference Result 2423 states and 3328 transitions. [2022-02-16 13:03:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-16 13:03:41,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 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 [2022-02-16 13:03:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:03:41,367 INFO L225 Difference]: With dead ends: 2423 [2022-02-16 13:03:41,367 INFO L226 Difference]: Without dead ends: 2377 [2022-02-16 13:03:41,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-02-16 13:03:41,368 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 239 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-16 13:03:41,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 924 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-16 13:03:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2022-02-16 13:03:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 1975. [2022-02-16 13:03:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.384498480243161) internal successors, (2733), 1974 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2733 transitions. [2022-02-16 13:03:41,385 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2733 transitions. Word has length 90 [2022-02-16 13:03:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:03:41,386 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2733 transitions. [2022-02-16 13:03:41,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:03:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2733 transitions. [2022-02-16 13:03:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-16 13:03:41,388 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:03:41,388 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-16 13:03:41,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-16 13:03:41,603 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,SelfDestructingSolverStorable23 [2022-02-16 13:03:41,603 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:03:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:03:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1221742322, now seen corresponding path program 22 times [2022-02-16 13:03:41,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:03:41,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420751788] [2022-02-16 13:03:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:03:41,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:03:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:03:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:41,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:03:41,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420751788] [2022-02-16 13:03:41,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420751788] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:03:41,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262638172] [2022-02-16 13:03:41,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-16 13:03:41,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:03:41,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:03:41,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:03:41,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-16 13:03:42,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-16 13:03:42,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:03:42,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-16 13:03:42,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:03:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:42,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:03:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:03:43,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262638172] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:03:43,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:03:43,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2022-02-16 13:03:43,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965532067] [2022-02-16 13:03:43,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:03:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-16 13:03:43,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:03:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-16 13:03:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1485, Unknown=0, NotChecked=0, Total=1640 [2022-02-16 13:03:43,070 INFO L87 Difference]: Start difference. First operand 1975 states and 2733 transitions. Second operand has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:04:02,815 WARN L228 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 68 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-16 13:04:05,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-16 13:04:07,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-16 13:05:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:05:09,058 INFO L93 Difference]: Finished difference Result 3949 states and 5146 transitions. [2022-02-16 13:05:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-02-16 13:05:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 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 95 [2022-02-16 13:05:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:05:09,063 INFO L225 Difference]: With dead ends: 3949 [2022-02-16 13:05:09,063 INFO L226 Difference]: Without dead ends: 3906 [2022-02-16 13:05:09,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18678 ImplicationChecksByTransitivity, 78.2s TimeCoverageRelationStatistics Valid=5437, Invalid=44511, Unknown=4, NotChecked=0, Total=49952 [2022-02-16 13:05:09,067 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 923 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 161 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-02-16 13:05:09,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 2278 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1817 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-02-16 13:05:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2022-02-16 13:05:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 2492. [2022-02-16 13:05:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2491 states have (on average 1.3894018466479325) internal successors, (3461), 2491 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:05:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3461 transitions. [2022-02-16 13:05:09,090 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3461 transitions. Word has length 95 [2022-02-16 13:05:09,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:05:09,091 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3461 transitions. [2022-02-16 13:05:09,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:05:09,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3461 transitions. [2022-02-16 13:05:09,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-16 13:05:09,093 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:05:09,093 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-16 13:05:09,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-16 13:05:09,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:05:09,310 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:05:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:05:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1250361636, now seen corresponding path program 23 times [2022-02-16 13:05:09,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:05:09,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729030126] [2022-02-16 13:05:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:05:09,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:05:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:05:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:05:09,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:05:09,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729030126] [2022-02-16 13:05:09,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729030126] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:05:09,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358212936] [2022-02-16 13:05:09,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-16 13:05:09,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:05:09,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:05:09,855 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:05:09,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-16 13:05:09,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-16 13:05:09,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:05:09,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-16 13:05:09,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:05:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:05:10,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:05:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:05:11,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358212936] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:05:11,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:05:11,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 45 [2022-02-16 13:05:11,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076305690] [2022-02-16 13:05:11,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:05:11,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-16 13:05:11,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:05:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-16 13:05:11,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2022-02-16 13:05:11,538 INFO L87 Difference]: Start difference. First operand 2492 states and 3461 transitions. Second operand has 45 states, 45 states have (on average 3.533333333333333) internal successors, (159), 45 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:06:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:06:11,248 INFO L93 Difference]: Finished difference Result 4647 states and 6168 transitions. [2022-02-16 13:06:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-02-16 13:06:11,249 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.533333333333333) internal successors, (159), 45 states have internal predecessors, (159), 0 states have call successors, (0), 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 95 [2022-02-16 13:06:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:06:11,253 INFO L225 Difference]: With dead ends: 4647 [2022-02-16 13:06:11,253 INFO L226 Difference]: Without dead ends: 4564 [2022-02-16 13:06:11,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19831 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=4732, Invalid=52150, Unknown=0, NotChecked=0, Total=56882 [2022-02-16 13:06:11,257 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 603 mSDsluCounter, 3828 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-02-16 13:06:11,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 3402 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-02-16 13:06:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-02-16 13:06:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 2915. [2022-02-16 13:06:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 1.3925875085792725) internal successors, (4058), 2914 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:06:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4058 transitions. [2022-02-16 13:06:11,286 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4058 transitions. Word has length 95 [2022-02-16 13:06:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:06:11,286 INFO L470 AbstractCegarLoop]: Abstraction has 2915 states and 4058 transitions. [2022-02-16 13:06:11,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.533333333333333) internal successors, (159), 45 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:06:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4058 transitions. [2022-02-16 13:06:11,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-16 13:06:11,289 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:06:11,290 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-16 13:06:11,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-16 13:06:11,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:06:11,505 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:06:11,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:06:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1738063218, now seen corresponding path program 24 times [2022-02-16 13:06:11,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:06:11,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783970489] [2022-02-16 13:06:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:06:11,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:06:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:06:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:06:11,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:06:11,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783970489] [2022-02-16 13:06:11,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783970489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:06:11,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788879697] [2022-02-16 13:06:11,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-16 13:06:11,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:06:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:06:11,838 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:06:11,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-16 13:06:11,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-16 13:06:11,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 13:06:11,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-16 13:06:11,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:06:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:06:12,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:06:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:06:13,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788879697] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:06:13,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:06:13,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 45 [2022-02-16 13:06:13,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768761832] [2022-02-16 13:06:13,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:06:13,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-16 13:06:13,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:06:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-16 13:06:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-16 13:06:13,061 INFO L87 Difference]: Start difference. First operand 2915 states and 4058 transitions. Second operand has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 45 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:06:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:06:59,035 INFO L93 Difference]: Finished difference Result 4468 states and 5994 transitions. [2022-02-16 13:06:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-16 13:06:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 45 states have internal predecessors, (163), 0 states have call successors, (0), 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 95 [2022-02-16 13:06:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:06:59,040 INFO L225 Difference]: With dead ends: 4468 [2022-02-16 13:06:59,040 INFO L226 Difference]: Without dead ends: 4441 [2022-02-16 13:06:59,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9951 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=3242, Invalid=26169, Unknown=1, NotChecked=0, Total=29412 [2022-02-16 13:06:59,043 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 523 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-16 13:06:59,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 3378 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-16 13:06:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2022-02-16 13:06:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 3185. [2022-02-16 13:06:59,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 1.3925879396984924) internal successors, (4434), 3184 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:06:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4434 transitions. [2022-02-16 13:06:59,076 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4434 transitions. Word has length 95 [2022-02-16 13:06:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:06:59,076 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 4434 transitions. [2022-02-16 13:06:59,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 45 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:06:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4434 transitions. [2022-02-16 13:06:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-16 13:06:59,079 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:06:59,079 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-16 13:06:59,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-16 13:06:59,295 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,SelfDestructingSolverStorable26 [2022-02-16 13:06:59,295 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 13:06:59,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:06:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1999122762, now seen corresponding path program 25 times [2022-02-16 13:06:59,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:06:59,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856180203] [2022-02-16 13:06:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:06:59,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:06:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:06:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:06:59,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:06:59,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856180203] [2022-02-16 13:06:59,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856180203] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 13:06:59,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896101599] [2022-02-16 13:06:59,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-16 13:06:59,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 13:06:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:06:59,948 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 13:06:59,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-16 13:07:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:07:00,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-16 13:07:00,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 13:07:12,730 WARN L228 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 4198 DAG size of output: 2756 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-02-16 13:07:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:07:27,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 13:07:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:07:30,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896101599] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 13:07:30,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 13:07:30,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 47 [2022-02-16 13:07:30,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904652711] [2022-02-16 13:07:30,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 13:07:30,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-16 13:07:30,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:07:30,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-16 13:07:30,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-02-16 13:07:30,255 INFO L87 Difference]: Start difference. First operand 3185 states and 4434 transitions. Second operand has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 47 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:08:06,925 WARN L228 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 78 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-16 13:10:12,137 WARN L228 SmtUtils]: Spent 12.69s on a formula simplification. DAG size of input: 127 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-16 13:10:25,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-16 13:11:04,340 WARN L228 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 136 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-16 13:14:41,950 WARN L228 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 131 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-16 13:15:26,861 WARN L228 SmtUtils]: Spent 10.86s on a formula simplification. DAG size of input: 109 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-02-16 13:15:32,377 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-16 13:15:32,386 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-16 13:15:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-16 13:15:32,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10269 ImplicationChecksByTransitivity, 459.1s TimeCoverageRelationStatistics Valid=3663, Invalid=28912, Unknown=5, NotChecked=0, Total=32580 [2022-02-16 13:15:32,394 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 481 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-02-16 13:15:32,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1851 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2211 Invalid, 1 Unknown, 0 Unchecked, 25.6s Time] [2022-02-16 13:15:32,395 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-16 13:15:32,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-16 13:15:32,603 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,SelfDestructingSolverStorable27 [2022-02-16 13:15:32,603 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3185states) and FLOYD_HOARE automaton (currently 146 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. [2022-02-16 13:15:32,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-16 13:15:32,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-16 13:15:32,608 INFO L732 BasicCegarLoop]: Path program histogram: [25, 2, 1] [2022-02-16 13:15:32,609 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-16 13:15:32,610 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 13:15:32,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:15:32 BasicIcfg [2022-02-16 13:15:32,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 13:15:32,611 INFO L158 Benchmark]: Toolchain (without parser) took 860117.26ms. Allocated memory was 201.3MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 147.8MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2022-02-16 13:15:32,612 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory was 164.7MB in the beginning and 164.7MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 13:15:32,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.03ms. Allocated memory is still 201.3MB. Free memory was 147.6MB in the beginning and 174.7MB in the end (delta: -27.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-02-16 13:15:32,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.05ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 172.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-16 13:15:32,612 INFO L158 Benchmark]: Boogie Preprocessor took 13.68ms. Allocated memory is still 201.3MB. Free memory was 172.9MB in the beginning and 171.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 13:15:32,612 INFO L158 Benchmark]: RCFGBuilder took 414.44ms. Allocated memory is still 201.3MB. Free memory was 171.5MB in the beginning and 158.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-16 13:15:32,612 INFO L158 Benchmark]: TraceAbstraction took 859465.98ms. Allocated memory was 201.3MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 157.9MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2022-02-16 13:15:32,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory was 164.7MB in the beginning and 164.7MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.03ms. Allocated memory is still 201.3MB. Free memory was 147.6MB in the beginning and 174.7MB in the end (delta: -27.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.05ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 172.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.68ms. Allocated memory is still 201.3MB. Free memory was 172.9MB in the beginning and 171.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 414.44ms. Allocated memory is still 201.3MB. Free memory was 171.5MB in the beginning and 158.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 859465.98ms. Allocated memory was 201.3MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 157.9MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - 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: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (3185states) and FLOYD_HOARE automaton (currently 146 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. - TimeoutResultAtElement [Line: 70]: 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 (3185states) and FLOYD_HOARE automaton (currently 146 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. - TimeoutResultAtElement [Line: 71]: 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 (3185states) and FLOYD_HOARE automaton (currently 146 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 859.3s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 25, EmptinessCheckTime: 6.8s, AutomataDifference: 763.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 30.6s, PartialOrderReductionTime: 30.5s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 8873 SdHoareTripleChecker+Valid, 56.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8873 mSDsluCounter, 37998 SdHoareTripleChecker+Invalid, 54.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40468 mSDsCounter, 1626 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28685 IncrementalHoareTripleChecker+Invalid, 30314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1626 mSolverCounterUnsat, 2616 mSDtfsCounter, 28685 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6366 GetRequests, 3742 SyntacticMatches, 42 SemanticMatches, 2581 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119840 ImplicationChecksByTransitivity, 704.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=657295occurred in iteration=0, InterpolantAutomatonStates: 1990, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 27 MinimizatonAttempts, 38709 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 49.0s InterpolantComputationTime, 4390 NumberOfCodeBlocks, 4274 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 6343 ConstructedInterpolants, 0 QuantifiedInterpolants, 32029 SizeOfPredicates, 273 NumberOfNonLiveVariables, 4458 ConjunctsInSsa, 527 ConjunctsInUnsatCore, 77 InterpolantComputations, 4 PerfectInterpolantSequences, 329/1875 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