/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 13:46:54,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 13:46:54,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 13:46:54,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 13:46:54,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 13:46:54,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 13:46:54,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 13:46:54,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 13:46:54,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 13:46:54,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 13:46:54,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 13:46:54,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-01-28 13:46:54,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 13:46:54,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 13:46:54,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 13:46:54,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-28 13:46:54,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 13:46:54,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 13:46:54,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 13:46:54,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 13:46:54,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 13:46:54,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 13:46:54,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 13:46:54,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 13:46:54,605 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 13:46:54,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 13:46:54,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 13:46:54,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 13:46:54,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 13:46:54,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 13:46:54,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 13:46:54,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:46:54,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 13:46:54,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 13:46:54,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 13:46:54,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 13:46:54,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 13:46:54,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 13:46:54,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 13:46:54,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 13:46:54,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 13:46:54,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 13:46:54,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 13:46:54,802 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-28 13:46:54,802 INFO L275 PluginConnector]: CDTParser initialized [2022-01-28 13:46:54,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-01-28 13:46:54,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adf07261/d47ab3a165fa4414a0cd5f3ffdd24220/FLAG053e53dfd [2022-01-28 13:46:55,165 INFO L306 CDTParser]: Found 1 translation units. [2022-01-28 13:46:55,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-01-28 13:46:55,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adf07261/d47ab3a165fa4414a0cd5f3ffdd24220/FLAG053e53dfd [2022-01-28 13:46:55,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adf07261/d47ab3a165fa4414a0cd5f3ffdd24220 [2022-01-28 13:46:55,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 13:46:55,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-28 13:46:55,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-28 13:46:55,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-28 13:46:55,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-28 13:46:55,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c71f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55, skipping insertion in model container [2022-01-28 13:46:55,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-28 13:46:55,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-28 13:46:55,786 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/test-context1.wvr.c[2433,2446] [2022-01-28 13:46:55,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:46:55,805 INFO L203 MainTranslator]: Completed pre-run [2022-01-28 13:46:55,832 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/test-context1.wvr.c[2433,2446] [2022-01-28 13:46:55,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:46:55,847 INFO L208 MainTranslator]: Completed translation [2022-01-28 13:46:55,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55 WrapperNode [2022-01-28 13:46:55,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-28 13:46:55,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 13:46:55,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 13:46:55,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 13:46:55,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,888 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-01-28 13:46:55,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 13:46:55,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 13:46:55,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 13:46:55,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 13:46:55,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 13:46:55,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 13:46:55,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 13:46:55,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 13:46:55,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (1/1) ... [2022-01-28 13:46:55,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:46:55,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:46:55,963 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) [2022-01-28 13:46:55,984 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 [2022-01-28 13:46:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-28 13:46:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 13:46:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 13:46:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 13:46:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 13:46:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-28 13:46:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-28 13:46:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-28 13:46:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-28 13:46:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-28 13:46:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-28 13:46:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 13:46:56,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 13:46:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-28 13:46:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-28 13:46:56,003 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 13:46:56,076 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 13:46:56,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 13:46:56,218 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 13:46:56,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 13:46:56,278 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-28 13:46:56,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:46:56 BoogieIcfgContainer [2022-01-28 13:46:56,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 13:46:56,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 13:46:56,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 13:46:56,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 13:46:56,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:46:55" (1/3) ... [2022-01-28 13:46:56,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de2be8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:46:56, skipping insertion in model container [2022-01-28 13:46:56,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:46:55" (2/3) ... [2022-01-28 13:46:56,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de2be8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:46:56, skipping insertion in model container [2022-01-28 13:46:56,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:46:56" (3/3) ... [2022-01-28 13:46:56,288 INFO L111 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-01-28 13:46:56,291 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 13:46:56,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 13:46:56,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 13:46:56,291 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 13:46:56,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:46:56,340 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-28 13:46:56,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 13:46:56,378 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, 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 [2022-01-28 13:46:56,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-28 13:46:56,387 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 116 transitions, 248 flow [2022-01-28 13:46:56,424 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-28 13:46:56,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:46:56,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:46:56,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:46:56,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:46:56,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1680176795, now seen corresponding path program 1 times [2022-01-28 13:46:56,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:46:56,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782981821] [2022-01-28 13:46:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:46:56,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:46:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:46:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:46:56,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:46:56,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782981821] [2022-01-28 13:46:56,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782981821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:46:56,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:46:56,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 13:46:56,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874205271] [2022-01-28 13:46:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:46:56,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-28 13:46:56,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:46:56,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-28 13:46:56,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 13:46:56,608 INFO L87 Difference]: Start difference. First operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:46:56,646 INFO L93 Difference]: Finished difference Result 331 states and 738 transitions. [2022-01-28 13:46:56,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 13:46:56,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-28 13:46:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:46:56,656 INFO L225 Difference]: With dead ends: 331 [2022-01-28 13:46:56,656 INFO L226 Difference]: Without dead ends: 328 [2022-01-28 13:46:56,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 13:46:56,659 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:46:56,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:46:56,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-28 13:46:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-01-28 13:46:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.2477064220183487) internal successors, (735), 327 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-01-28 13:46:56,711 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 81 [2022-01-28 13:46:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:46:56,711 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-01-28 13:46:56,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-01-28 13:46:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-28 13:46:56,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:46:56,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:46:56,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 13:46:56,715 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:46:56,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:46:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash -415887122, now seen corresponding path program 1 times [2022-01-28 13:46:56,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:46:56,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425509222] [2022-01-28 13:46:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:46:56,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:46:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:46:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:46:56,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:46:56,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425509222] [2022-01-28 13:46:56,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425509222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:46:56,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:46:56,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:46:56,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824108992] [2022-01-28 13:46:56,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:46:56,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:46:56,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:46:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:46:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:46:56,871 INFO L87 Difference]: Start difference. First operand 328 states and 735 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:46:56,934 INFO L93 Difference]: Finished difference Result 551 states and 1322 transitions. [2022-01-28 13:46:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 13:46:56,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-28 13:46:56,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:46:56,938 INFO L225 Difference]: With dead ends: 551 [2022-01-28 13:46:56,938 INFO L226 Difference]: Without dead ends: 421 [2022-01-28 13:46:56,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:46:56,939 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 16 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:46:56,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:46:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-28 13:46:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 359. [2022-01-28 13:46:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.2849162011173183) internal successors, (818), 358 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) [2022-01-28 13:46:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 818 transitions. [2022-01-28 13:46:56,958 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 818 transitions. Word has length 83 [2022-01-28 13:46:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:46:56,959 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 818 transitions. [2022-01-28 13:46:56,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 818 transitions. [2022-01-28 13:46:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-28 13:46:56,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:46:56,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:46:56,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 13:46:56,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:46:56,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:46:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1146128612, now seen corresponding path program 1 times [2022-01-28 13:46:56,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:46:56,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270960591] [2022-01-28 13:46:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:46:56,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:46:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:46:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:46:57,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:46:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270960591] [2022-01-28 13:46:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270960591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:46:57,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:46:57,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 13:46:57,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979711124] [2022-01-28 13:46:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:46:57,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 13:46:57,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:46:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 13:46:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 13:46:57,050 INFO L87 Difference]: Start difference. First operand 359 states and 818 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:46:57,080 INFO L93 Difference]: Finished difference Result 494 states and 1120 transitions. [2022-01-28 13:46:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 13:46:57,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-28 13:46:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:46:57,083 INFO L225 Difference]: With dead ends: 494 [2022-01-28 13:46:57,083 INFO L226 Difference]: Without dead ends: 413 [2022-01-28 13:46:57,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 13:46:57,084 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 15 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:46:57,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 131 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:46:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-28 13:46:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-01-28 13:46:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.283980582524272) internal successors, (941), 412 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 941 transitions. [2022-01-28 13:46:57,104 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 941 transitions. Word has length 86 [2022-01-28 13:46:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:46:57,104 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 941 transitions. [2022-01-28 13:46:57,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 941 transitions. [2022-01-28 13:46:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-28 13:46:57,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:46:57,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:46:57,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 13:46:57,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:46:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:46:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1766674574, now seen corresponding path program 1 times [2022-01-28 13:46:57,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:46:57,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854286397] [2022-01-28 13:46:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:46:57,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:46:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:46:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:46:57,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:46:57,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854286397] [2022-01-28 13:46:57,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854286397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:46:57,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:46:57,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 13:46:57,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735158285] [2022-01-28 13:46:57,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:46:57,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 13:46:57,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:46:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 13:46:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 13:46:57,326 INFO L87 Difference]: Start difference. First operand 413 states and 941 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:46:57,441 INFO L93 Difference]: Finished difference Result 544 states and 1228 transitions. [2022-01-28 13:46:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 13:46:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-28 13:46:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:46:57,444 INFO L225 Difference]: With dead ends: 544 [2022-01-28 13:46:57,444 INFO L226 Difference]: Without dead ends: 481 [2022-01-28 13:46:57,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-28 13:46:57,445 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 234 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:46:57,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 293 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:46:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-28 13:46:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 414. [2022-01-28 13:46:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.280871670702179) internal successors, (942), 413 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 942 transitions. [2022-01-28 13:46:57,456 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 942 transitions. Word has length 89 [2022-01-28 13:46:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:46:57,457 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 942 transitions. [2022-01-28 13:46:57,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 942 transitions. [2022-01-28 13:46:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 13:46:57,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:46:57,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:46:57,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 13:46:57,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:46:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:46:57,459 INFO L85 PathProgramCache]: Analyzing trace with hash 249833095, now seen corresponding path program 1 times [2022-01-28 13:46:57,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:46:57,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373449751] [2022-01-28 13:46:57,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:46:57,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:46:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:46:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:46:57,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:46:57,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373449751] [2022-01-28 13:46:57,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373449751] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:46:57,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801084952] [2022-01-28 13:46:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:46:57,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:46:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:46:57,684 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) [2022-01-28 13:46:57,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-28 13:46:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:46:57,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-28 13:46:57,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:46:58,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:46:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:46:58,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:46:58,296 INFO L354 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-01-28 13:46:58,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2022-01-28 13:46:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:46:58,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801084952] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:46:58,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:46:58,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7] total 15 [2022-01-28 13:46:58,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503640138] [2022-01-28 13:46:58,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:46:58,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-28 13:46:58,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:46:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-28 13:46:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-28 13:46:58,407 INFO L87 Difference]: Start difference. First operand 414 states and 942 transitions. Second operand has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 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) [2022-01-28 13:46:58,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:46:58,610 INFO L93 Difference]: Finished difference Result 799 states and 1958 transitions. [2022-01-28 13:46:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-28 13:46:58,612 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 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 96 [2022-01-28 13:46:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:46:58,614 INFO L225 Difference]: With dead ends: 799 [2022-01-28 13:46:58,614 INFO L226 Difference]: Without dead ends: 669 [2022-01-28 13:46:58,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-01-28 13:46:58,616 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 229 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:46:58,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 728 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:46:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-28 13:46:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 514. [2022-01-28 13:46:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.348927875243665) internal successors, (1205), 513 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1205 transitions. [2022-01-28 13:46:58,655 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1205 transitions. Word has length 96 [2022-01-28 13:46:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:46:58,656 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1205 transitions. [2022-01-28 13:46:58,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 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) [2022-01-28 13:46:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1205 transitions. [2022-01-28 13:46:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 13:46:58,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:46:58,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:46:58,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-28 13:46:58,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:46:58,868 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:46:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:46:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2113726581, now seen corresponding path program 2 times [2022-01-28 13:46:58,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:46:58,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83416492] [2022-01-28 13:46:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:46:58,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:46:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:46:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:46:59,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:46:59,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83416492] [2022-01-28 13:46:59,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83416492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:46:59,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348359439] [2022-01-28 13:46:59,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:46:59,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:46:59,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:46:59,135 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) [2022-01-28 13:46:59,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-28 13:46:59,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:46:59,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:46:59,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-28 13:46:59,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:46:59,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:46:59,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:46:59,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:46:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:46:59,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:46:59,800 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_89 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_89) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset)))) is different from false [2022-01-28 13:46:59,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:46:59,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-01-28 13:46:59,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-28 13:47:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:47:00,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348359439] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:00,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:00,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 31 [2022-01-28 13:47:00,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298925200] [2022-01-28 13:47:00,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:00,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-28 13:47:00,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-28 13:47:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=749, Unknown=1, NotChecked=56, Total=930 [2022-01-28 13:47:00,245 INFO L87 Difference]: Start difference. First operand 514 states and 1205 transitions. Second operand has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:00,583 INFO L93 Difference]: Finished difference Result 941 states and 2353 transitions. [2022-01-28 13:47:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-28 13:47:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 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 96 [2022-01-28 13:47:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:00,589 INFO L225 Difference]: With dead ends: 941 [2022-01-28 13:47:00,589 INFO L226 Difference]: Without dead ends: 811 [2022-01-28 13:47:00,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=306, Invalid=1503, Unknown=1, NotChecked=82, Total=1892 [2022-01-28 13:47:00,592 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 359 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:00,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1292 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 323 Invalid, 0 Unknown, 143 Unchecked, 0.1s Time] [2022-01-28 13:47:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-01-28 13:47:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 507. [2022-01-28 13:47:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 2.3537549407114624) internal successors, (1191), 506 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1191 transitions. [2022-01-28 13:47:00,605 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1191 transitions. Word has length 96 [2022-01-28 13:47:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:00,606 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1191 transitions. [2022-01-28 13:47:00,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1191 transitions. [2022-01-28 13:47:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 13:47:00,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:00,609 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:00,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:00,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-28 13:47:00,838 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:00,838 INFO L85 PathProgramCache]: Analyzing trace with hash -541859669, now seen corresponding path program 3 times [2022-01-28 13:47:00,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:00,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934196717] [2022-01-28 13:47:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:00,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:47:00,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:00,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934196717] [2022-01-28 13:47:00,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934196717] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:00,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331015398] [2022-01-28 13:47:00,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:47:00,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:00,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:00,878 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) [2022-01-28 13:47:00,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-28 13:47:00,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 13:47:00,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:00,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-28 13:47:00,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:01,333 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-01-28 13:47:01,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-01-28 13:47:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 13:47:01,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:01,504 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-01-28 13:47:01,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-01-28 13:47:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 13:47:02,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331015398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:02,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:02,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 14] total 25 [2022-01-28 13:47:02,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950718392] [2022-01-28 13:47:02,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:02,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-28 13:47:02,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-28 13:47:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-01-28 13:47:02,104 INFO L87 Difference]: Start difference. First operand 507 states and 1191 transitions. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:02,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:02,517 INFO L93 Difference]: Finished difference Result 1874 states and 4626 transitions. [2022-01-28 13:47:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-28 13:47:02,517 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 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 99 [2022-01-28 13:47:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:02,522 INFO L225 Difference]: With dead ends: 1874 [2022-01-28 13:47:02,522 INFO L226 Difference]: Without dead ends: 1069 [2022-01-28 13:47:02,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2022-01-28 13:47:02,523 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 847 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:02,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1226 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 360 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-01-28 13:47:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-01-28 13:47:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 798. [2022-01-28 13:47:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 2.440401505646173) internal successors, (1945), 797 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1945 transitions. [2022-01-28 13:47:02,542 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1945 transitions. Word has length 99 [2022-01-28 13:47:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:02,542 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1945 transitions. [2022-01-28 13:47:02,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1945 transitions. [2022-01-28 13:47:02,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-28 13:47:02,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:02,544 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:02,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:02,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:02,760 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:02,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:02,760 INFO L85 PathProgramCache]: Analyzing trace with hash 122707561, now seen corresponding path program 4 times [2022-01-28 13:47:02,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:02,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348390843] [2022-01-28 13:47:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:02,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:47:02,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:02,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348390843] [2022-01-28 13:47:02,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348390843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:02,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324412071] [2022-01-28 13:47:02,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:47:02,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:02,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:02,878 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) [2022-01-28 13:47:02,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-28 13:47:02,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:47:02,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:02,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-28 13:47:02,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:47:03,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:47:03,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324412071] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:03,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:03,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-28 13:47:03,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963897310] [2022-01-28 13:47:03,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:03,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-28 13:47:03,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-28 13:47:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2022-01-28 13:47:03,744 INFO L87 Difference]: Start difference. First operand 798 states and 1945 transitions. Second operand has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:04,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:04,032 INFO L93 Difference]: Finished difference Result 878 states and 2112 transitions. [2022-01-28 13:47:04,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-28 13:47:04,033 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 0 states have call successors, (0), 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 102 [2022-01-28 13:47:04,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:04,036 INFO L225 Difference]: With dead ends: 878 [2022-01-28 13:47:04,036 INFO L226 Difference]: Without dead ends: 764 [2022-01-28 13:47:04,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2022-01-28 13:47:04,037 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 838 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:04,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 611 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:47:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-28 13:47:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 759. [2022-01-28 13:47:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.4775725593667546) internal successors, (1878), 758 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1878 transitions. [2022-01-28 13:47:04,050 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1878 transitions. Word has length 102 [2022-01-28 13:47:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:04,050 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1878 transitions. [2022-01-28 13:47:04,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1878 transitions. [2022-01-28 13:47:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-28 13:47:04,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:04,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:04,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:04,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:04,271 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash 453195598, now seen corresponding path program 5 times [2022-01-28 13:47:04,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:04,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903863563] [2022-01-28 13:47:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:04,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:04,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:04,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903863563] [2022-01-28 13:47:04,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903863563] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:04,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099397096] [2022-01-28 13:47:04,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:47:04,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:04,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:04,464 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) [2022-01-28 13:47:04,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-28 13:47:04,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-28 13:47:04,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:04,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-28 13:47:04,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:04,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:47:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:04,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:05,013 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:47:05,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:47:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:05,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099397096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:05,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:05,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 9] total 22 [2022-01-28 13:47:05,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085183089] [2022-01-28 13:47:05,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:05,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-28 13:47:05,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-28 13:47:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-01-28 13:47:05,144 INFO L87 Difference]: Start difference. First operand 759 states and 1878 transitions. Second operand has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:05,670 INFO L93 Difference]: Finished difference Result 2366 states and 6050 transitions. [2022-01-28 13:47:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-28 13:47:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 0 states have call successors, (0), 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 109 [2022-01-28 13:47:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:05,676 INFO L225 Difference]: With dead ends: 2366 [2022-01-28 13:47:05,676 INFO L226 Difference]: Without dead ends: 1564 [2022-01-28 13:47:05,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=2304, Unknown=0, NotChecked=0, Total=2652 [2022-01-28 13:47:05,679 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 612 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:05,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1570 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:47:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-01-28 13:47:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 668. [2022-01-28 13:47:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 2.3928035982008997) internal successors, (1596), 667 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1596 transitions. [2022-01-28 13:47:05,696 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1596 transitions. Word has length 109 [2022-01-28 13:47:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:05,696 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1596 transitions. [2022-01-28 13:47:05,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1596 transitions. [2022-01-28 13:47:05,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-28 13:47:05,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:05,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:05,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:05,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:05,912 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash 269033586, now seen corresponding path program 6 times [2022-01-28 13:47:05,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:05,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355275131] [2022-01-28 13:47:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:05,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:06,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:06,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355275131] [2022-01-28 13:47:06,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355275131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:06,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937743805] [2022-01-28 13:47:06,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:47:06,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:06,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:06,166 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) [2022-01-28 13:47:06,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-28 13:47:06,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-28 13:47:06,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:06,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-28 13:47:06,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:06,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:47:06,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:47:06,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:47:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:06,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:06,942 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_194) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 4)))) is different from false [2022-01-28 13:47:06,958 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:47:06,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-28 13:47:06,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:47:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:07,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937743805] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:07,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:07,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 38 [2022-01-28 13:47:07,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957171864] [2022-01-28 13:47:07,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:07,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-28 13:47:07,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-28 13:47:07,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1187, Unknown=1, NotChecked=70, Total=1406 [2022-01-28 13:47:07,344 INFO L87 Difference]: Start difference. First operand 668 states and 1596 transitions. Second operand has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:07,976 INFO L93 Difference]: Finished difference Result 1347 states and 3410 transitions. [2022-01-28 13:47:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 13:47:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 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 109 [2022-01-28 13:47:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:07,981 INFO L225 Difference]: With dead ends: 1347 [2022-01-28 13:47:07,982 INFO L226 Difference]: Without dead ends: 1217 [2022-01-28 13:47:07,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=374, Invalid=2709, Unknown=1, NotChecked=108, Total=3192 [2022-01-28 13:47:07,983 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 685 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:07,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 1631 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 501 Invalid, 0 Unknown, 154 Unchecked, 0.2s Time] [2022-01-28 13:47:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-01-28 13:47:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 661. [2022-01-28 13:47:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.396969696969697) internal successors, (1582), 660 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1582 transitions. [2022-01-28 13:47:07,998 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1582 transitions. Word has length 109 [2022-01-28 13:47:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:07,998 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1582 transitions. [2022-01-28 13:47:07,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1582 transitions. [2022-01-28 13:47:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-28 13:47:08,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:08,000 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:08,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:08,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:08,212 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1926579844, now seen corresponding path program 7 times [2022-01-28 13:47:08,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:08,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136529448] [2022-01-28 13:47:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:08,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:08,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:08,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136529448] [2022-01-28 13:47:08,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136529448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:08,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331995158] [2022-01-28 13:47:08,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:47:08,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:08,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:08,254 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) [2022-01-28 13:47:08,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-28 13:47:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:08,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 13:47:08,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:08,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:47:08,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331995158] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:08,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:08,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-28 13:47:08,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961613267] [2022-01-28 13:47:08,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:08,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-28 13:47:08,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:08,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-28 13:47:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:47:08,656 INFO L87 Difference]: Start difference. First operand 661 states and 1582 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:08,682 INFO L93 Difference]: Finished difference Result 1753 states and 4401 transitions. [2022-01-28 13:47:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 13:47:08,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 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 112 [2022-01-28 13:47:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:08,687 INFO L225 Difference]: With dead ends: 1753 [2022-01-28 13:47:08,687 INFO L226 Difference]: Without dead ends: 1558 [2022-01-28 13:47:08,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:47:08,687 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 233 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:08,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 251 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:47:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2022-01-28 13:47:08,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1159. [2022-01-28 13:47:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5673575129533677) internal successors, (2973), 1158 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2973 transitions. [2022-01-28 13:47:08,706 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2973 transitions. Word has length 112 [2022-01-28 13:47:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:08,706 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2973 transitions. [2022-01-28 13:47:08,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2973 transitions. [2022-01-28 13:47:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-28 13:47:08,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:08,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:08,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-28 13:47:08,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:08,924 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash 856762834, now seen corresponding path program 8 times [2022-01-28 13:47:08,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:08,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548826843] [2022-01-28 13:47:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:08,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-28 13:47:09,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548826843] [2022-01-28 13:47:09,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548826843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929904272] [2022-01-28 13:47:09,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:47:09,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:09,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:09,088 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) [2022-01-28 13:47:09,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-28 13:47:09,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:47:09,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:09,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 13:47:09,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-28 13:47:09,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-28 13:47:10,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929904272] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:10,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:10,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-01-28 13:47:10,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224524529] [2022-01-28 13:47:10,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:10,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 13:47:10,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:10,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 13:47:10,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 13:47:10,174 INFO L87 Difference]: Start difference. First operand 1159 states and 2973 transitions. Second operand has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:10,700 INFO L93 Difference]: Finished difference Result 1723 states and 4315 transitions. [2022-01-28 13:47:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-28 13:47:10,700 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 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 115 [2022-01-28 13:47:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:10,705 INFO L225 Difference]: With dead ends: 1723 [2022-01-28 13:47:10,705 INFO L226 Difference]: Without dead ends: 1372 [2022-01-28 13:47:10,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2022-01-28 13:47:10,706 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 1042 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:10,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 1077 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:47:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-01-28 13:47:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1166. [2022-01-28 13:47:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.5579399141630903) internal successors, (2980), 1165 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2980 transitions. [2022-01-28 13:47:10,755 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2980 transitions. Word has length 115 [2022-01-28 13:47:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:10,755 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2980 transitions. [2022-01-28 13:47:10,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2980 transitions. [2022-01-28 13:47:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-28 13:47:10,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:10,758 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:10,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:10,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-28 13:47:10,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1114783911, now seen corresponding path program 9 times [2022-01-28 13:47:10,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:10,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94152218] [2022-01-28 13:47:10,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:10,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:47:11,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94152218] [2022-01-28 13:47:11,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94152218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376589192] [2022-01-28 13:47:11,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:47:11,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:11,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:11,328 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) [2022-01-28 13:47:11,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-28 13:47:11,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-28 13:47:11,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:11,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-28 13:47:11,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:12,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-28 13:47:12,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:47:12,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:47:12,649 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-01-28 13:47:12,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2022-01-28 13:47:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:47:12,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:13,930 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:47:13,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2022-01-28 13:47:13,939 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:47:13,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 297 [2022-01-28 13:47:13,963 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-28 13:47:13,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 292 treesize of output 228 [2022-01-28 13:47:13,970 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-28 13:47:13,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 196 [2022-01-28 13:47:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:47:14,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376589192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:14,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:14,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 25] total 64 [2022-01-28 13:47:14,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47606975] [2022-01-28 13:47:14,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:14,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-28 13:47:14,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-28 13:47:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=3557, Unknown=53, NotChecked=0, Total=4032 [2022-01-28 13:47:14,510 INFO L87 Difference]: Start difference. First operand 1166 states and 2980 transitions. Second operand has 64 states, 64 states have (on average 4.703125) internal successors, (301), 64 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:18,338 INFO L93 Difference]: Finished difference Result 8701 states and 23109 transitions. [2022-01-28 13:47:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-28 13:47:18,338 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.703125) internal successors, (301), 64 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-01-28 13:47:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:18,362 INFO L225 Difference]: With dead ends: 8701 [2022-01-28 13:47:18,362 INFO L226 Difference]: Without dead ends: 7636 [2022-01-28 13:47:18,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6862 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2642, Invalid=17895, Unknown=55, NotChecked=0, Total=20592 [2022-01-28 13:47:18,366 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 3913 mSDsluCounter, 5592 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1731 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:18,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 5186 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1426 Invalid, 0 Unknown, 1731 Unchecked, 0.7s Time] [2022-01-28 13:47:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7636 states. [2022-01-28 13:47:18,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7636 to 3094. [2022-01-28 13:47:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3093 states have (on average 2.681862269641125) internal successors, (8295), 3093 states have internal predecessors, (8295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 8295 transitions. [2022-01-28 13:47:18,459 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 8295 transitions. Word has length 122 [2022-01-28 13:47:18,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:18,459 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 8295 transitions. [2022-01-28 13:47:18,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.703125) internal successors, (301), 64 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 8295 transitions. [2022-01-28 13:47:18,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-28 13:47:18,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:18,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:18,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:18,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-28 13:47:18,674 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1681431121, now seen corresponding path program 10 times [2022-01-28 13:47:18,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:18,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167063485] [2022-01-28 13:47:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:18,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:47:18,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:18,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167063485] [2022-01-28 13:47:18,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167063485] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:18,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896845724] [2022-01-28 13:47:18,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:47:18,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:18,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:18,952 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) [2022-01-28 13:47:18,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-28 13:47:19,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:47:19,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:19,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-28 13:47:19,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:19,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:47:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:47:19,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:19,609 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:47:19,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:47:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-28 13:47:19,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896845724] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:19,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:19,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 11] total 37 [2022-01-28 13:47:19,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941527294] [2022-01-28 13:47:19,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:19,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 13:47:19,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 13:47:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 13:47:19,767 INFO L87 Difference]: Start difference. First operand 3094 states and 8295 transitions. Second operand has 37 states, 37 states have (on average 7.4324324324324325) internal successors, (275), 37 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:21,284 INFO L93 Difference]: Finished difference Result 11418 states and 30468 transitions. [2022-01-28 13:47:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-28 13:47:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.4324324324324325) internal successors, (275), 37 states have internal predecessors, (275), 0 states have call successors, (0), 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 122 [2022-01-28 13:47:21,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:21,308 INFO L225 Difference]: With dead ends: 11418 [2022-01-28 13:47:21,308 INFO L226 Difference]: Without dead ends: 9097 [2022-01-28 13:47:21,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1054, Invalid=10936, Unknown=0, NotChecked=0, Total=11990 [2022-01-28 13:47:21,314 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1385 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:21,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 3462 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-28 13:47:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9097 states. [2022-01-28 13:47:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9097 to 2259. [2022-01-28 13:47:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.5938883968113373) internal successors, (5857), 2258 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 5857 transitions. [2022-01-28 13:47:21,380 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 5857 transitions. Word has length 122 [2022-01-28 13:47:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:21,380 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 5857 transitions. [2022-01-28 13:47:21,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.4324324324324325) internal successors, (275), 37 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 5857 transitions. [2022-01-28 13:47:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-28 13:47:21,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:21,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:21,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:21,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-28 13:47:21,602 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 328572843, now seen corresponding path program 11 times [2022-01-28 13:47:21,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325501350] [2022-01-28 13:47:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:21,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:47:21,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:21,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325501350] [2022-01-28 13:47:21,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325501350] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:21,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017770107] [2022-01-28 13:47:21,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:47:21,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:21,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:21,980 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) [2022-01-28 13:47:21,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-28 13:47:22,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-28 13:47:22,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:22,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-28 13:47:22,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:22,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:47:22,315 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:47:22,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:47:22,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-28 13:47:22,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:47:23,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-01-28 13:47:23,258 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-01-28 13:47:23,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2022-01-28 13:47:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:47:23,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:23,386 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_355 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_355) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 8)) 5)) is different from false [2022-01-28 13:47:23,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:47:23,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-01-28 13:47:23,822 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:47:23,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 185 [2022-01-28 13:47:23,830 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:47:23,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 94 [2022-01-28 13:47:23,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 94 [2022-01-28 13:47:24,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-28 13:47:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 11 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-28 13:47:24,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017770107] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:24,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:24,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 21] total 60 [2022-01-28 13:47:24,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114149276] [2022-01-28 13:47:24,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:24,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-28 13:47:24,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-28 13:47:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=3089, Unknown=10, NotChecked=114, Total=3540 [2022-01-28 13:47:24,674 INFO L87 Difference]: Start difference. First operand 2259 states and 5857 transitions. Second operand has 60 states, 60 states have (on average 4.966666666666667) internal successors, (298), 60 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:26,074 INFO L93 Difference]: Finished difference Result 5222 states and 13790 transitions. [2022-01-28 13:47:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-28 13:47:26,075 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.966666666666667) internal successors, (298), 60 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-01-28 13:47:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:26,085 INFO L225 Difference]: With dead ends: 5222 [2022-01-28 13:47:26,085 INFO L226 Difference]: Without dead ends: 5092 [2022-01-28 13:47:26,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=844, Invalid=6982, Unknown=10, NotChecked=174, Total=8010 [2022-01-28 13:47:26,087 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 995 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 819 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:26,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 3043 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 792 Invalid, 0 Unknown, 819 Unchecked, 0.3s Time] [2022-01-28 13:47:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2022-01-28 13:47:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 1641. [2022-01-28 13:47:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1640 states have (on average 2.523170731707317) internal successors, (4138), 1640 states have internal predecessors, (4138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 4138 transitions. [2022-01-28 13:47:26,128 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 4138 transitions. Word has length 122 [2022-01-28 13:47:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:26,128 INFO L470 AbstractCegarLoop]: Abstraction has 1641 states and 4138 transitions. [2022-01-28 13:47:26,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.966666666666667) internal successors, (298), 60 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 4138 transitions. [2022-01-28 13:47:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-28 13:47:26,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:26,131 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:26,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:26,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-28 13:47:26,347 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:26,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash 444997519, now seen corresponding path program 12 times [2022-01-28 13:47:26,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:26,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570479043] [2022-01-28 13:47:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:26,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-28 13:47:26,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570479043] [2022-01-28 13:47:26,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570479043] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804917470] [2022-01-28 13:47:26,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:47:26,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:26,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:26,396 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) [2022-01-28 13:47:26,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-28 13:47:26,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-28 13:47:26,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:26,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-28 13:47:26,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-28 13:47:26,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-28 13:47:26,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804917470] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:26,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:26,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-28 13:47:26,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399648060] [2022-01-28 13:47:26,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:26,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-28 13:47:26,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-28 13:47:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:47:26,950 INFO L87 Difference]: Start difference. First operand 1641 states and 4138 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:26,980 INFO L93 Difference]: Finished difference Result 3482 states and 8893 transitions. [2022-01-28 13:47:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 13:47:26,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 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 125 [2022-01-28 13:47:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:26,986 INFO L225 Difference]: With dead ends: 3482 [2022-01-28 13:47:26,986 INFO L226 Difference]: Without dead ends: 3002 [2022-01-28 13:47:26,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:47:26,986 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 268 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:26,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 305 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:47:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2022-01-28 13:47:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2353. [2022-01-28 13:47:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2352 states have (on average 2.5948129251700682) internal successors, (6103), 2352 states have internal predecessors, (6103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 6103 transitions. [2022-01-28 13:47:27,032 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 6103 transitions. Word has length 125 [2022-01-28 13:47:27,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:27,032 INFO L470 AbstractCegarLoop]: Abstraction has 2353 states and 6103 transitions. [2022-01-28 13:47:27,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:27,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 6103 transitions. [2022-01-28 13:47:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-28 13:47:27,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:27,036 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:27,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:27,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-28 13:47:27,251 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:27,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash -953233813, now seen corresponding path program 13 times [2022-01-28 13:47:27,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:27,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87137124] [2022-01-28 13:47:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:27,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:47:27,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:27,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87137124] [2022-01-28 13:47:27,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87137124] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:27,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730799147] [2022-01-28 13:47:27,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:47:27,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:27,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:27,459 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) [2022-01-28 13:47:27,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-28 13:47:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:27,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 13:47:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:47:28,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:47:28,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730799147] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:28,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:28,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-28 13:47:28,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591407612] [2022-01-28 13:47:28,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:28,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-28 13:47:28,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-28 13:47:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2022-01-28 13:47:28,656 INFO L87 Difference]: Start difference. First operand 2353 states and 6103 transitions. Second operand has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:29,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:29,355 INFO L93 Difference]: Finished difference Result 2493 states and 6347 transitions. [2022-01-28 13:47:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-28 13:47:29,356 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 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 128 [2022-01-28 13:47:29,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:29,359 INFO L225 Difference]: With dead ends: 2493 [2022-01-28 13:47:29,359 INFO L226 Difference]: Without dead ends: 1908 [2022-01-28 13:47:29,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1088, Invalid=3882, Unknown=0, NotChecked=0, Total=4970 [2022-01-28 13:47:29,360 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 994 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:29,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 1519 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:47:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-01-28 13:47:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1666. [2022-01-28 13:47:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.601201201201201) internal successors, (4331), 1665 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4331 transitions. [2022-01-28 13:47:29,381 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4331 transitions. Word has length 128 [2022-01-28 13:47:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:29,381 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 4331 transitions. [2022-01-28 13:47:29,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4331 transitions. [2022-01-28 13:47:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-28 13:47:29,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:29,384 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:29,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:29,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-28 13:47:29,598 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 552932526, now seen corresponding path program 14 times [2022-01-28 13:47:29,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:29,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604434695] [2022-01-28 13:47:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:29,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:47:29,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:29,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604434695] [2022-01-28 13:47:29,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604434695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:29,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64648472] [2022-01-28 13:47:29,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:47:29,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:29,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:29,990 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) [2022-01-28 13:47:29,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-28 13:47:30,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:47:30,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:30,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-28 13:47:30,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:30,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:47:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:47:30,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:30,765 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:47:30,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:47:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:47:30,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64648472] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:30,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:30,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 47 [2022-01-28 13:47:30,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554972512] [2022-01-28 13:47:30,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:30,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-28 13:47:30,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-28 13:47:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2022-01-28 13:47:30,945 INFO L87 Difference]: Start difference. First operand 1666 states and 4331 transitions. Second operand has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:47:33,421 INFO L93 Difference]: Finished difference Result 11428 states and 30191 transitions. [2022-01-28 13:47:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-28 13:47:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 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 135 [2022-01-28 13:47:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:47:33,434 INFO L225 Difference]: With dead ends: 11428 [2022-01-28 13:47:33,434 INFO L226 Difference]: Without dead ends: 7904 [2022-01-28 13:47:33,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8716 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1756, Invalid=22114, Unknown=0, NotChecked=0, Total=23870 [2022-01-28 13:47:33,436 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2904 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2904 SdHoareTripleChecker+Valid, 4976 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 13:47:33,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2904 Valid, 4976 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 13:47:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-01-28 13:47:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 976. [2022-01-28 13:47:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 2.438974358974359) internal successors, (2378), 975 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 2378 transitions. [2022-01-28 13:47:33,481 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 2378 transitions. Word has length 135 [2022-01-28 13:47:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:47:33,481 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 2378 transitions. [2022-01-28 13:47:33,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:47:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 2378 transitions. [2022-01-28 13:47:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-28 13:47:33,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:47:33,483 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:47:33,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-28 13:47:33,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:33,695 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:47:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:47:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 532157394, now seen corresponding path program 15 times [2022-01-28 13:47:33,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:47:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083709118] [2022-01-28 13:47:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:47:33,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:47:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:47:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:47:34,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:47:34,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083709118] [2022-01-28 13:47:34,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083709118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:47:34,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508808923] [2022-01-28 13:47:34,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:47:34,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:47:34,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:47:34,152 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) [2022-01-28 13:47:34,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-28 13:47:34,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-28 13:47:34,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:47:34,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-28 13:47:34,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:47:35,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:47:35,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-01-28 13:47:47,580 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-01-28 13:47:47,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2022-01-28 13:47:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 54 refuted. 18 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-28 13:47:47,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:47:47,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:47:47,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-28 13:47:47,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:47:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-28 13:47:49,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508808923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:47:49,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:47:49,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 29] total 75 [2022-01-28 13:47:49,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842522491] [2022-01-28 13:47:49,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:47:49,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-28 13:47:49,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:47:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-28 13:47:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=5005, Unknown=7, NotChecked=0, Total=5550 [2022-01-28 13:47:49,363 INFO L87 Difference]: Start difference. First operand 976 states and 2378 transitions. Second operand has 75 states, 75 states have (on average 4.413333333333333) internal successors, (331), 75 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:30,546 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 50 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-28 13:48:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:48:43,291 INFO L93 Difference]: Finished difference Result 7936 states and 21124 transitions. [2022-01-28 13:48:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-28 13:48:43,291 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.413333333333333) internal successors, (331), 75 states have internal predecessors, (331), 0 states have call successors, (0), 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 135 [2022-01-28 13:48:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:48:43,303 INFO L225 Difference]: With dead ends: 7936 [2022-01-28 13:48:43,303 INFO L226 Difference]: Without dead ends: 7582 [2022-01-28 13:48:43,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 238 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5881 ImplicationChecksByTransitivity, 66.7s TimeCoverageRelationStatistics Valid=2456, Invalid=15073, Unknown=27, NotChecked=0, Total=17556 [2022-01-28 13:48:43,305 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 2777 mSDsluCounter, 6672 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 6719 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 500 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:48:43,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2777 Valid, 6719 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1411 Invalid, 0 Unknown, 500 Unchecked, 0.6s Time] [2022-01-28 13:48:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2022-01-28 13:48:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 3627. [2022-01-28 13:48:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3626 states have (on average 2.6991174848317705) internal successors, (9787), 3626 states have internal predecessors, (9787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 9787 transitions. [2022-01-28 13:48:43,392 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 9787 transitions. Word has length 135 [2022-01-28 13:48:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:48:43,392 INFO L470 AbstractCegarLoop]: Abstraction has 3627 states and 9787 transitions. [2022-01-28 13:48:43,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.413333333333333) internal successors, (331), 75 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 9787 transitions. [2022-01-28 13:48:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-28 13:48:43,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:48:43,399 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:48:43,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-28 13:48:43,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:43,611 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:48:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:48:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1900620510, now seen corresponding path program 16 times [2022-01-28 13:48:43,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:48:43,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337610237] [2022-01-28 13:48:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:48:43,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:48:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:48:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:48:44,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:48:44,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337610237] [2022-01-28 13:48:44,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337610237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:48:44,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206691344] [2022-01-28 13:48:44,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:48:44,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:48:44,095 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) [2022-01-28 13:48:44,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-28 13:48:44,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:48:44,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:48:44,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 62 conjunts are in the unsatisfiable core [2022-01-28 13:48:44,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:48:44,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:48:44,385 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:48:44,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:48:45,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:48:45,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:48:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:48:45,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:48:45,374 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_530) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 12)))) is different from false [2022-01-28 13:48:45,382 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:48:45,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-28 13:48:45,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:48:46,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-28 13:48:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:48:46,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206691344] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:48:46,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:48:46,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 20] total 63 [2022-01-28 13:48:46,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427848022] [2022-01-28 13:48:46,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:48:46,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-28 13:48:46,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:48:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-28 13:48:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=3493, Unknown=1, NotChecked=120, Total=3906 [2022-01-28 13:48:46,068 INFO L87 Difference]: Start difference. First operand 3627 states and 9787 transitions. Second operand has 63 states, 63 states have (on average 5.222222222222222) internal successors, (329), 63 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:48:48,004 INFO L93 Difference]: Finished difference Result 7580 states and 20737 transitions. [2022-01-28 13:48:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-28 13:48:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.222222222222222) internal successors, (329), 63 states have internal predecessors, (329), 0 states have call successors, (0), 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 135 [2022-01-28 13:48:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:48:48,016 INFO L225 Difference]: With dead ends: 7580 [2022-01-28 13:48:48,016 INFO L226 Difference]: Without dead ends: 7434 [2022-01-28 13:48:48,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3666 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=900, Invalid=11093, Unknown=1, NotChecked=216, Total=12210 [2022-01-28 13:48:48,017 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1490 mSDsluCounter, 4250 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 4164 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 447 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 13:48:48,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 4164 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1811 Invalid, 0 Unknown, 447 Unchecked, 0.7s Time] [2022-01-28 13:48:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7434 states. [2022-01-28 13:48:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7434 to 3033. [2022-01-28 13:48:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3032 states have (on average 2.6546833773087073) internal successors, (8049), 3032 states have internal predecessors, (8049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 8049 transitions. [2022-01-28 13:48:48,077 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 8049 transitions. Word has length 135 [2022-01-28 13:48:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:48:48,077 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 8049 transitions. [2022-01-28 13:48:48,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.222222222222222) internal successors, (329), 63 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 8049 transitions. [2022-01-28 13:48:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-28 13:48:48,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:48:48,082 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:48:48,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-28 13:48:48,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:48,295 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:48:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:48:48,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1854471120, now seen corresponding path program 17 times [2022-01-28 13:48:48,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:48:48,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017379232] [2022-01-28 13:48:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:48:48,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:48:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:48:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:48:48,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:48:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017379232] [2022-01-28 13:48:48,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017379232] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:48:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161374534] [2022-01-28 13:48:48,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:48:48,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:48:48,372 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) [2022-01-28 13:48:48,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-28 13:48:48,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-28 13:48:48,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:48:48,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-28 13:48:48,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:48:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:48:48,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:48:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:48:48,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161374534] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:48:48,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:48:48,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-01-28 13:48:48,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038791158] [2022-01-28 13:48:48,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:48:48,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 13:48:48,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:48:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 13:48:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-28 13:48:48,916 INFO L87 Difference]: Start difference. First operand 3033 states and 8049 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:48:48,977 INFO L93 Difference]: Finished difference Result 7198 states and 19282 transitions. [2022-01-28 13:48:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:48:48,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 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 138 [2022-01-28 13:48:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:48:48,987 INFO L225 Difference]: With dead ends: 7198 [2022-01-28 13:48:48,988 INFO L226 Difference]: Without dead ends: 6393 [2022-01-28 13:48:48,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-28 13:48:48,988 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 279 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:48:48,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 416 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:48:48,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2022-01-28 13:48:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 5015. [2022-01-28 13:48:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5015 states, 5014 states have (on average 2.7221779018747507) internal successors, (13649), 5014 states have internal predecessors, (13649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5015 states to 5015 states and 13649 transitions. [2022-01-28 13:48:49,072 INFO L78 Accepts]: Start accepts. Automaton has 5015 states and 13649 transitions. Word has length 138 [2022-01-28 13:48:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:48:49,072 INFO L470 AbstractCegarLoop]: Abstraction has 5015 states and 13649 transitions. [2022-01-28 13:48:49,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5015 states and 13649 transitions. [2022-01-28 13:48:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-28 13:48:49,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:48:49,082 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:48:49,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-28 13:48:49,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:49,300 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:48:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:48:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1307847874, now seen corresponding path program 18 times [2022-01-28 13:48:49,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:48:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422900570] [2022-01-28 13:48:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:48:49,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:48:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:48:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 23 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-28 13:48:49,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:48:49,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422900570] [2022-01-28 13:48:49,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422900570] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:48:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856090755] [2022-01-28 13:48:49,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:48:49,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:48:49,570 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) [2022-01-28 13:48:49,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-28 13:48:49,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-28 13:48:49,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:48:49,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-28 13:48:49,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:48:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-28 13:48:50,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:48:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-28 13:48:51,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856090755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:48:51,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:48:51,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2022-01-28 13:48:51,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726418266] [2022-01-28 13:48:51,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:48:51,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-28 13:48:51,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:48:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-28 13:48:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2040, Unknown=0, NotChecked=0, Total=2450 [2022-01-28 13:48:51,173 INFO L87 Difference]: Start difference. First operand 5015 states and 13649 transitions. Second operand has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:48:52,296 INFO L93 Difference]: Finished difference Result 9196 states and 24559 transitions. [2022-01-28 13:48:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 13:48:52,297 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 0 states have call successors, (0), 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 141 [2022-01-28 13:48:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:48:52,310 INFO L225 Difference]: With dead ends: 9196 [2022-01-28 13:48:52,310 INFO L226 Difference]: Without dead ends: 8911 [2022-01-28 13:48:52,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1584, Invalid=5898, Unknown=0, NotChecked=0, Total=7482 [2022-01-28 13:48:52,314 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 2781 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2781 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:48:52,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2781 Valid, 2256 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 13:48:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states. [2022-01-28 13:48:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8911 to 4610. [2022-01-28 13:48:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 2.7264048600564115) internal successors, (12566), 4609 states have internal predecessors, (12566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 12566 transitions. [2022-01-28 13:48:52,392 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 12566 transitions. Word has length 141 [2022-01-28 13:48:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:48:52,393 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 12566 transitions. [2022-01-28 13:48:52,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 12566 transitions. [2022-01-28 13:48:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-28 13:48:52,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:48:52,400 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:48:52,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-28 13:48:52,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:52,615 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:48:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:48:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash 554113564, now seen corresponding path program 19 times [2022-01-28 13:48:52,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:48:52,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99108457] [2022-01-28 13:48:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:48:52,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:48:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:48:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 33 proven. 61 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:48:52,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:48:52,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99108457] [2022-01-28 13:48:52,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99108457] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:48:52,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662602553] [2022-01-28 13:48:52,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:48:52,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:48:52,858 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) [2022-01-28 13:48:52,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-28 13:48:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:48:52,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-28 13:48:52,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:48:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:48:53,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:48:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:48:54,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662602553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:48:54,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:48:54,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 58 [2022-01-28 13:48:54,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037752132] [2022-01-28 13:48:54,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:48:54,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-28 13:48:54,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:48:54,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-28 13:48:54,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2664, Unknown=0, NotChecked=0, Total=3306 [2022-01-28 13:48:54,424 INFO L87 Difference]: Start difference. First operand 4610 states and 12566 transitions. Second operand has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:48:55,500 INFO L93 Difference]: Finished difference Result 3656 states and 9383 transitions. [2022-01-28 13:48:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-28 13:48:55,501 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 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 141 [2022-01-28 13:48:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:48:55,504 INFO L225 Difference]: With dead ends: 3656 [2022-01-28 13:48:55,504 INFO L226 Difference]: Without dead ends: 2537 [2022-01-28 13:48:55,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1721, Invalid=6651, Unknown=0, NotChecked=0, Total=8372 [2022-01-28 13:48:55,506 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1288 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:48:55,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 2288 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:48:55,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-01-28 13:48:55,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2259. [2022-01-28 13:48:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.6266607617360496) internal successors, (5931), 2258 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 5931 transitions. [2022-01-28 13:48:55,532 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 5931 transitions. Word has length 141 [2022-01-28 13:48:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:48:55,532 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 5931 transitions. [2022-01-28 13:48:55,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:48:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 5931 transitions. [2022-01-28 13:48:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-28 13:48:55,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:48:55,536 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:48:55,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-28 13:48:55,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:55,736 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:48:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:48:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1333837113, now seen corresponding path program 20 times [2022-01-28 13:48:55,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:48:55,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356502408] [2022-01-28 13:48:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:48:55,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:48:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:48:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:48:56,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:48:56,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356502408] [2022-01-28 13:48:56,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356502408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:48:56,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943876820] [2022-01-28 13:48:56,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:48:56,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:48:56,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:48:56,255 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) [2022-01-28 13:48:56,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-28 13:48:56,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:48:56,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:48:56,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-28 13:48:56,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:48:56,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:48:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-28 13:48:56,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:48:57,065 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:48:57,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:48:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-28 13:48:57,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943876820] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:48:57,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:48:57,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 17, 15] total 49 [2022-01-28 13:48:57,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214937869] [2022-01-28 13:48:57,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:48:57,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-28 13:48:57,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:48:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-28 13:48:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2171, Unknown=0, NotChecked=0, Total=2352 [2022-01-28 13:48:57,302 INFO L87 Difference]: Start difference. First operand 2259 states and 5931 transitions. Second operand has 49 states, 49 states have (on average 6.1020408163265305) internal successors, (299), 49 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:01,450 INFO L93 Difference]: Finished difference Result 18188 states and 48276 transitions. [2022-01-28 13:49:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-28 13:49:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.1020408163265305) internal successors, (299), 49 states have internal predecessors, (299), 0 states have call successors, (0), 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 148 [2022-01-28 13:49:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:01,469 INFO L225 Difference]: With dead ends: 18188 [2022-01-28 13:49:01,469 INFO L226 Difference]: Without dead ends: 12909 [2022-01-28 13:49:01,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14594 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2679, Invalid=36327, Unknown=0, NotChecked=0, Total=39006 [2022-01-28 13:49:01,472 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 4791 mSDsluCounter, 8208 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 7749 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:01,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 7749 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 13:49:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12909 states. [2022-01-28 13:49:01,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12909 to 1130. [2022-01-28 13:49:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.4526129317980514) internal successors, (2769), 1129 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2769 transitions. [2022-01-28 13:49:01,532 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2769 transitions. Word has length 148 [2022-01-28 13:49:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:01,533 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2769 transitions. [2022-01-28 13:49:01,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.1020408163265305) internal successors, (299), 49 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2769 transitions. [2022-01-28 13:49:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-28 13:49:01,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:01,534 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:01,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:01,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-28 13:49:01,747 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:01,748 INFO L85 PathProgramCache]: Analyzing trace with hash -389869621, now seen corresponding path program 21 times [2022-01-28 13:49:01,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:01,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571166712] [2022-01-28 13:49:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:01,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:49:02,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:02,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571166712] [2022-01-28 13:49:02,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571166712] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:02,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669758116] [2022-01-28 13:49:02,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:49:02,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:02,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:02,328 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) [2022-01-28 13:49:02,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-28 13:49:02,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-28 13:49:02,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:02,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-28 13:49:02,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:04,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:49:04,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:49:04,431 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-01-28 13:49:04,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2022-01-28 13:49:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:49:04,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:04,913 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:49:04,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-01-28 13:49:04,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-28 13:49:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:49:08,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669758116] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:08,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:08,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 37, 37] total 92 [2022-01-28 13:49:08,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216688494] [2022-01-28 13:49:08,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:08,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-28 13:49:08,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:08,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-28 13:49:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=7744, Unknown=0, NotChecked=0, Total=8372 [2022-01-28 13:49:08,551 INFO L87 Difference]: Start difference. First operand 1130 states and 2769 transitions. Second operand has 92 states, 92 states have (on average 4.043478260869565) internal successors, (372), 92 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:21,317 INFO L93 Difference]: Finished difference Result 24308 states and 62419 transitions. [2022-01-28 13:49:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-28 13:49:21,317 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 4.043478260869565) internal successors, (372), 92 states have internal predecessors, (372), 0 states have call successors, (0), 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 148 [2022-01-28 13:49:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:21,347 INFO L225 Difference]: With dead ends: 24308 [2022-01-28 13:49:21,347 INFO L226 Difference]: Without dead ends: 19752 [2022-01-28 13:49:21,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 250 SyntacticMatches, 19 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14934 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=4131, Invalid=35262, Unknown=9, NotChecked=0, Total=39402 [2022-01-28 13:49:21,349 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 6360 mSDsluCounter, 9798 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6360 SdHoareTripleChecker+Valid, 8967 SdHoareTripleChecker+Invalid, 6167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1891 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:21,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6360 Valid, 8967 Invalid, 6167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3860 Invalid, 0 Unknown, 1891 Unchecked, 1.7s Time] [2022-01-28 13:49:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19752 states. [2022-01-28 13:49:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19752 to 7982. [2022-01-28 13:49:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7982 states, 7981 states have (on average 2.789374765067034) internal successors, (22262), 7981 states have internal predecessors, (22262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7982 states to 7982 states and 22262 transitions. [2022-01-28 13:49:21,541 INFO L78 Accepts]: Start accepts. Automaton has 7982 states and 22262 transitions. Word has length 148 [2022-01-28 13:49:21,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:21,541 INFO L470 AbstractCegarLoop]: Abstraction has 7982 states and 22262 transitions. [2022-01-28 13:49:21,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 4.043478260869565) internal successors, (372), 92 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7982 states and 22262 transitions. [2022-01-28 13:49:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-28 13:49:21,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:21,553 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:21,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:21,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-28 13:49:21,755 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:21,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash 726491987, now seen corresponding path program 22 times [2022-01-28 13:49:21,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:21,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521851333] [2022-01-28 13:49:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:21,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:49:22,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:22,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521851333] [2022-01-28 13:49:22,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521851333] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:22,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684402417] [2022-01-28 13:49:22,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:49:22,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:22,367 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) [2022-01-28 13:49:22,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-28 13:49:22,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:49:22,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:22,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-28 13:49:22,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:49:23,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:49:23,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:49:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:49:23,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:24,147 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_760 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760) c_~queue~0.base) (+ (* c_~front~0 4) 16 c_~queue~0.offset)) 5)) is different from false [2022-01-28 13:49:24,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:49:24,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-28 13:49:24,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:49:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-28 13:49:24,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684402417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:24,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:24,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 22] total 72 [2022-01-28 13:49:24,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692084688] [2022-01-28 13:49:24,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:24,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-28 13:49:24,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:24,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-28 13:49:24,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=4643, Unknown=1, NotChecked=138, Total=5112 [2022-01-28 13:49:24,798 INFO L87 Difference]: Start difference. First operand 7982 states and 22262 transitions. Second operand has 72 states, 72 states have (on average 4.916666666666667) internal successors, (354), 72 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:27,224 INFO L93 Difference]: Finished difference Result 14615 states and 40199 transitions. [2022-01-28 13:49:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-28 13:49:27,224 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.916666666666667) internal successors, (354), 72 states have internal predecessors, (354), 0 states have call successors, (0), 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 148 [2022-01-28 13:49:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:27,248 INFO L225 Difference]: With dead ends: 14615 [2022-01-28 13:49:27,248 INFO L226 Difference]: Without dead ends: 14382 [2022-01-28 13:49:27,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1175, Invalid=14578, Unknown=1, NotChecked=248, Total=16002 [2022-01-28 13:49:27,249 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1735 mSDsluCounter, 6560 mSDsCounter, 0 mSdLazyCounter, 2954 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:27,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 6333 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2954 Invalid, 0 Unknown, 395 Unchecked, 1.0s Time] [2022-01-28 13:49:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14382 states. [2022-01-28 13:49:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14382 to 7711. [2022-01-28 13:49:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7711 states, 7710 states have (on average 2.7909208819714655) internal successors, (21518), 7710 states have internal predecessors, (21518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 21518 transitions. [2022-01-28 13:49:27,409 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 21518 transitions. Word has length 148 [2022-01-28 13:49:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:27,409 INFO L470 AbstractCegarLoop]: Abstraction has 7711 states and 21518 transitions. [2022-01-28 13:49:27,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.916666666666667) internal successors, (354), 72 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 21518 transitions. [2022-01-28 13:49:27,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-28 13:49:27,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:27,422 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:27,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:27,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-28 13:49:27,623 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash -574020033, now seen corresponding path program 23 times [2022-01-28 13:49:27,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:27,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237847156] [2022-01-28 13:49:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:27,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 58 proven. 97 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:49:27,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:27,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237847156] [2022-01-28 13:49:27,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237847156] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:27,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393541474] [2022-01-28 13:49:27,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:49:27,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:27,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:27,906 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) [2022-01-28 13:49:27,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-28 13:49:28,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-28 13:49:28,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:28,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-28 13:49:28,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 77 proven. 75 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-28 13:49:28,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 58 proven. 94 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-28 13:49:29,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393541474] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:29,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:29,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 22] total 62 [2022-01-28 13:49:29,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747847661] [2022-01-28 13:49:29,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:29,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-28 13:49:29,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:29,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-28 13:49:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=3267, Unknown=0, NotChecked=0, Total=3782 [2022-01-28 13:49:29,201 INFO L87 Difference]: Start difference. First operand 7711 states and 21518 transitions. Second operand has 62 states, 62 states have (on average 5.370967741935484) internal successors, (333), 62 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:30,172 INFO L93 Difference]: Finished difference Result 4189 states and 10484 transitions. [2022-01-28 13:49:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-28 13:49:30,172 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.370967741935484) internal successors, (333), 62 states have internal predecessors, (333), 0 states have call successors, (0), 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 154 [2022-01-28 13:49:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:30,174 INFO L225 Difference]: With dead ends: 4189 [2022-01-28 13:49:30,174 INFO L226 Difference]: Without dead ends: 1408 [2022-01-28 13:49:30,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3365 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1517, Invalid=7225, Unknown=0, NotChecked=0, Total=8742 [2022-01-28 13:49:30,176 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1331 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:30,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 2288 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:49:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2022-01-28 13:49:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1130. [2022-01-28 13:49:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.446412754650133) internal successors, (2762), 1129 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2762 transitions. [2022-01-28 13:49:30,187 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2762 transitions. Word has length 154 [2022-01-28 13:49:30,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:30,187 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2762 transitions. [2022-01-28 13:49:30,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.370967741935484) internal successors, (333), 62 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2762 transitions. [2022-01-28 13:49:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-28 13:49:30,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:30,189 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:30,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:30,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:30,397 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:30,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:30,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1698599744, now seen corresponding path program 24 times [2022-01-28 13:49:30,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:30,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949807403] [2022-01-28 13:49:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:30,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:30,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949807403] [2022-01-28 13:49:30,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949807403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033612004] [2022-01-28 13:49:30,468 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:49:30,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:30,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:30,477 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) [2022-01-28 13:49:30,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-28 13:49:30,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-28 13:49:30,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:30,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-28 13:49:30,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:31,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:31,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033612004] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:31,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:31,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-01-28 13:49:31,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845256420] [2022-01-28 13:49:31,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:31,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 13:49:31,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:31,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 13:49:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-28 13:49:31,278 INFO L87 Difference]: Start difference. First operand 1130 states and 2762 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:31,332 INFO L93 Difference]: Finished difference Result 4109 states and 10588 transitions. [2022-01-28 13:49:31,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 13:49:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 158 [2022-01-28 13:49:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:31,337 INFO L225 Difference]: With dead ends: 4109 [2022-01-28 13:49:31,337 INFO L226 Difference]: Without dead ends: 3743 [2022-01-28 13:49:31,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-28 13:49:31,338 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 376 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:31,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 482 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:49:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2022-01-28 13:49:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 2945. [2022-01-28 13:49:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 2.6426630434782608) internal successors, (7780), 2944 states have internal predecessors, (7780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 7780 transitions. [2022-01-28 13:49:31,371 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 7780 transitions. Word has length 158 [2022-01-28 13:49:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:31,371 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 7780 transitions. [2022-01-28 13:49:31,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:31,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 7780 transitions. [2022-01-28 13:49:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-28 13:49:31,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:31,375 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:31,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:31,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-28 13:49:31,575 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:31,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1063269874, now seen corresponding path program 25 times [2022-01-28 13:49:31,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:31,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410921069] [2022-01-28 13:49:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:31,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:31,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410921069] [2022-01-28 13:49:31,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410921069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131694256] [2022-01-28 13:49:31,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:49:31,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:31,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:31,921 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) [2022-01-28 13:49:31,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-28 13:49:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:32,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-28 13:49:32,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:32,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:49:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:49:33,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:33,177 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:49:33,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:49:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:33,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131694256] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:33,434 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:33,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 33, 17] total 45 [2022-01-28 13:49:33,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657598710] [2022-01-28 13:49:33,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:33,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-28 13:49:33,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-28 13:49:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1819, Unknown=0, NotChecked=0, Total=1980 [2022-01-28 13:49:33,435 INFO L87 Difference]: Start difference. First operand 2945 states and 7780 transitions. Second operand has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 45 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:37,214 INFO L93 Difference]: Finished difference Result 18756 states and 49842 transitions. [2022-01-28 13:49:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-28 13:49:37,214 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 45 states have internal predecessors, (258), 0 states have call successors, (0), 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 161 [2022-01-28 13:49:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:37,238 INFO L225 Difference]: With dead ends: 18756 [2022-01-28 13:49:37,238 INFO L226 Difference]: Without dead ends: 14102 [2022-01-28 13:49:37,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 295 SyntacticMatches, 5 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11419 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2072, Invalid=29434, Unknown=0, NotChecked=0, Total=31506 [2022-01-28 13:49:37,241 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 4295 mSDsluCounter, 7927 mSDsCounter, 0 mSdLazyCounter, 3389 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4295 SdHoareTripleChecker+Valid, 7515 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 3389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:37,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4295 Valid, 7515 Invalid, 3636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 3389 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 13:49:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2022-01-28 13:49:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 1284. [2022-01-28 13:49:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.4629773967264224) internal successors, (3160), 1283 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3160 transitions. [2022-01-28 13:49:37,333 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3160 transitions. Word has length 161 [2022-01-28 13:49:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:37,333 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 3160 transitions. [2022-01-28 13:49:37,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 45 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3160 transitions. [2022-01-28 13:49:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-28 13:49:37,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:37,335 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:37,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:37,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-28 13:49:37,536 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1212014386, now seen corresponding path program 26 times [2022-01-28 13:49:37,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:37,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100787322] [2022-01-28 13:49:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:37,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:37,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:37,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100787322] [2022-01-28 13:49:37,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100787322] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:37,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692805402] [2022-01-28 13:49:37,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:49:37,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:37,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:37,939 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:49:37,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-28 13:49:38,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:49:38,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:38,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-28 13:49:38,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:38,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:49:38,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:49:39,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:49:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:39,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:39,282 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_933 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_933) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 20)))) is different from false [2022-01-28 13:49:39,290 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:49:39,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-28 13:49:39,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:49:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:39,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692805402] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:39,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:39,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 24] total 62 [2022-01-28 13:49:39,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335089044] [2022-01-28 13:49:39,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:39,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-28 13:49:39,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-28 13:49:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3444, Unknown=1, NotChecked=118, Total=3782 [2022-01-28 13:49:39,931 INFO L87 Difference]: Start difference. First operand 1284 states and 3160 transitions. Second operand has 62 states, 62 states have (on average 5.032258064516129) internal successors, (312), 62 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:41,999 INFO L93 Difference]: Finished difference Result 3427 states and 8919 transitions. [2022-01-28 13:49:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-28 13:49:42,000 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.032258064516129) internal successors, (312), 62 states have internal predecessors, (312), 0 states have call successors, (0), 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 161 [2022-01-28 13:49:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:42,004 INFO L225 Difference]: With dead ends: 3427 [2022-01-28 13:49:42,004 INFO L226 Difference]: Without dead ends: 3297 [2022-01-28 13:49:42,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2422 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=678, Invalid=8637, Unknown=1, NotChecked=190, Total=9506 [2022-01-28 13:49:42,005 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1680 mSDsluCounter, 6704 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 6470 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:42,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 6470 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2418 Invalid, 0 Unknown, 395 Unchecked, 0.8s Time] [2022-01-28 13:49:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2022-01-28 13:49:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 1277. [2022-01-28 13:49:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.4655172413793105) internal successors, (3146), 1276 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3146 transitions. [2022-01-28 13:49:42,024 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3146 transitions. Word has length 161 [2022-01-28 13:49:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:42,024 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 3146 transitions. [2022-01-28 13:49:42,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.032258064516129) internal successors, (312), 62 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3146 transitions. [2022-01-28 13:49:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-28 13:49:42,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:42,027 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:42,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:42,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:42,235 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:42,236 INFO L85 PathProgramCache]: Analyzing trace with hash -630277180, now seen corresponding path program 27 times [2022-01-28 13:49:42,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:42,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973089949] [2022-01-28 13:49:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:42,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-28 13:49:42,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973089949] [2022-01-28 13:49:42,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973089949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210742886] [2022-01-28 13:49:42,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:49:42,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:42,315 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:49:42,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-28 13:49:42,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-28 13:49:42,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:42,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-28 13:49:42,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:43,901 INFO L354 Elim1Store]: treesize reduction 126, result has 2.3 percent of original size [2022-01-28 13:49:43,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 19 [2022-01-28 13:49:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 33 proven. 169 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-28 13:49:43,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:44,437 INFO L354 Elim1Store]: treesize reduction 173, result has 21.7 percent of original size [2022-01-28 13:49:44,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 67 [2022-01-28 13:49:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 12 proven. 190 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-28 13:49:45,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210742886] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:45,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:45,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 31, 31] total 64 [2022-01-28 13:49:45,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425127701] [2022-01-28 13:49:45,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:45,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-28 13:49:45,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-28 13:49:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=3456, Unknown=0, NotChecked=0, Total=4032 [2022-01-28 13:49:45,788 INFO L87 Difference]: Start difference. First operand 1277 states and 3146 transitions. Second operand has 64 states, 64 states have (on average 6.140625) internal successors, (393), 64 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:51,069 INFO L93 Difference]: Finished difference Result 36846 states and 97847 transitions. [2022-01-28 13:49:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-28 13:49:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.140625) internal successors, (393), 64 states have internal predecessors, (393), 0 states have call successors, (0), 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 164 [2022-01-28 13:49:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:51,117 INFO L225 Difference]: With dead ends: 36846 [2022-01-28 13:49:51,117 INFO L226 Difference]: Without dead ends: 28846 [2022-01-28 13:49:51,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 342 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18509 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5028, Invalid=41844, Unknown=0, NotChecked=0, Total=46872 [2022-01-28 13:49:51,119 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 2607 mSDsluCounter, 8482 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 8301 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1409 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:51,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 8301 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1962 Invalid, 0 Unknown, 1409 Unchecked, 0.9s Time] [2022-01-28 13:49:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28846 states. [2022-01-28 13:49:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28846 to 11925. [2022-01-28 13:49:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11925 states, 11924 states have (on average 2.77910097282791) internal successors, (33138), 11924 states have internal predecessors, (33138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11925 states to 11925 states and 33138 transitions. [2022-01-28 13:49:51,432 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 33138 transitions. Word has length 164 [2022-01-28 13:49:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:51,432 INFO L470 AbstractCegarLoop]: Abstraction has 11925 states and 33138 transitions. [2022-01-28 13:49:51,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.140625) internal successors, (393), 64 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 33138 transitions. [2022-01-28 13:49:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-28 13:49:51,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:51,447 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:51,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:51,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:51,651 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:51,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1248893264, now seen corresponding path program 28 times [2022-01-28 13:49:51,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:51,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751753314] [2022-01-28 13:49:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:51,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 86 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-28 13:49:52,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751753314] [2022-01-28 13:49:52,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751753314] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265952423] [2022-01-28 13:49:52,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:49:52,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:52,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:52,008 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:49:52,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-28 13:49:52,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:49:52,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-28 13:49:52,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 107 proven. 122 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:49:53,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 103 proven. 117 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-28 13:49:54,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265952423] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:54,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:54,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 27] total 78 [2022-01-28 13:49:54,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502563779] [2022-01-28 13:49:54,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:54,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-28 13:49:54,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:54,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-28 13:49:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=4878, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 13:49:54,143 INFO L87 Difference]: Start difference. First operand 11925 states and 33138 transitions. Second operand has 78 states, 78 states have (on average 5.038461538461538) internal successors, (393), 78 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:49:56,056 INFO L93 Difference]: Finished difference Result 7032 states and 18528 transitions. [2022-01-28 13:49:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-28 13:49:56,056 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 5.038461538461538) internal successors, (393), 78 states have internal predecessors, (393), 0 states have call successors, (0), 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 167 [2022-01-28 13:49:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:49:56,062 INFO L225 Difference]: With dead ends: 7032 [2022-01-28 13:49:56,062 INFO L226 Difference]: Without dead ends: 4566 [2022-01-28 13:49:56,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6765 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3406, Invalid=14150, Unknown=0, NotChecked=0, Total=17556 [2022-01-28 13:49:56,064 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1230 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:49:56,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 3016 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 13:49:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2022-01-28 13:49:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4216. [2022-01-28 13:49:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4216 states, 4215 states have (on average 2.6849347568208777) internal successors, (11317), 4215 states have internal predecessors, (11317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4216 states to 4216 states and 11317 transitions. [2022-01-28 13:49:56,111 INFO L78 Accepts]: Start accepts. Automaton has 4216 states and 11317 transitions. Word has length 167 [2022-01-28 13:49:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:49:56,111 INFO L470 AbstractCegarLoop]: Abstraction has 4216 states and 11317 transitions. [2022-01-28 13:49:56,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 5.038461538461538) internal successors, (393), 78 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:49:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4216 states and 11317 transitions. [2022-01-28 13:49:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-28 13:49:56,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:49:56,117 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:49:56,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-28 13:49:56,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:56,331 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:49:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:49:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1049547545, now seen corresponding path program 29 times [2022-01-28 13:49:56,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:49:56,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036106268] [2022-01-28 13:49:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:49:56,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:49:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:49:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:49:57,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:49:57,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036106268] [2022-01-28 13:49:57,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036106268] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:49:57,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709373894] [2022-01-28 13:49:57,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:49:57,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:49:57,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:49:57,010 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:49:57,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-28 13:49:57,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-28 13:49:57,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:49:57,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-28 13:49:57,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:49:58,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:49:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-28 13:49:58,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:49:58,311 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:49:58,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:49:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-28 13:49:58,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709373894] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:49:58,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:49:58,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22, 19] total 65 [2022-01-28 13:49:58,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302934018] [2022-01-28 13:49:58,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:49:58,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-28 13:49:58,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:49:58,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-28 13:49:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3917, Unknown=0, NotChecked=0, Total=4160 [2022-01-28 13:49:58,643 INFO L87 Difference]: Start difference. First operand 4216 states and 11317 transitions. Second operand has 65 states, 65 states have (on average 5.292307692307692) internal successors, (344), 65 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:50:07,895 INFO L93 Difference]: Finished difference Result 39718 states and 106039 transitions. [2022-01-28 13:50:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-01-28 13:50:07,895 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.292307692307692) internal successors, (344), 65 states have internal predecessors, (344), 0 states have call successors, (0), 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 174 [2022-01-28 13:50:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:50:07,945 INFO L225 Difference]: With dead ends: 39718 [2022-01-28 13:50:07,945 INFO L226 Difference]: Without dead ends: 28853 [2022-01-28 13:50:07,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38758 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5811, Invalid=92471, Unknown=0, NotChecked=0, Total=98282 [2022-01-28 13:50:07,951 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 9253 mSDsluCounter, 17138 mSDsCounter, 0 mSdLazyCounter, 7326 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9253 SdHoareTripleChecker+Valid, 15915 SdHoareTripleChecker+Invalid, 7861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 7326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-28 13:50:07,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9253 Valid, 15915 Invalid, 7861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 7326 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-28 13:50:08,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28853 states. [2022-01-28 13:50:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28853 to 1438. [2022-01-28 13:50:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.4711203897007654) internal successors, (3551), 1437 states have internal predecessors, (3551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 3551 transitions. [2022-01-28 13:50:08,114 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 3551 transitions. Word has length 174 [2022-01-28 13:50:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:50:08,115 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 3551 transitions. [2022-01-28 13:50:08,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.292307692307692) internal successors, (344), 65 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 3551 transitions. [2022-01-28 13:50:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-28 13:50:08,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:50:08,117 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:50:08,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-28 13:50:08,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:08,317 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:50:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:50:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -550410261, now seen corresponding path program 30 times [2022-01-28 13:50:08,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:50:08,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923835424] [2022-01-28 13:50:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:50:08,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:50:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:50:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:50:09,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:50:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923835424] [2022-01-28 13:50:09,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923835424] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:50:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363183858] [2022-01-28 13:50:09,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:50:09,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:09,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:50:09,130 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:50:09,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-28 13:50:09,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-28 13:50:09,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:50:09,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-28 13:50:09,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:50:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:50:11,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-01-28 13:50:13,659 INFO L354 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-01-28 13:50:13,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-28 13:50:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 45 proven. 183 refuted. 3 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-28 13:50:13,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:50:16,735 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:50:16,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-01-28 13:50:16,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-28 13:50:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 45 proven. 186 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-28 13:50:19,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363183858] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:50:19,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:50:19,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 104 [2022-01-28 13:50:19,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237159693] [2022-01-28 13:50:19,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:50:19,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-28 13:50:19,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:50:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-28 13:50:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=966, Invalid=9743, Unknown=3, NotChecked=0, Total=10712 [2022-01-28 13:50:19,062 INFO L87 Difference]: Start difference. First operand 1438 states and 3551 transitions. Second operand has 104 states, 104 states have (on average 4.0576923076923075) internal successors, (422), 104 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:50:26,762 INFO L93 Difference]: Finished difference Result 13735 states and 37298 transitions. [2022-01-28 13:50:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-28 13:50:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 4.0576923076923075) internal successors, (422), 104 states have internal predecessors, (422), 0 states have call successors, (0), 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 174 [2022-01-28 13:50:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:50:26,780 INFO L225 Difference]: With dead ends: 13735 [2022-01-28 13:50:26,781 INFO L226 Difference]: Without dead ends: 13241 [2022-01-28 13:50:26,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 323 SyntacticMatches, 7 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14096 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=4301, Invalid=34262, Unknown=49, NotChecked=0, Total=38612 [2022-01-28 13:50:26,782 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 3398 mSDsluCounter, 13032 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 12938 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 904 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:50:26,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3398 Valid, 12938 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2808 Invalid, 0 Unknown, 904 Unchecked, 1.0s Time] [2022-01-28 13:50:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13241 states. [2022-01-28 13:50:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13241 to 7179. [2022-01-28 13:50:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7178 states have (on average 2.7626079687935357) internal successors, (19830), 7178 states have internal predecessors, (19830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 19830 transitions. [2022-01-28 13:50:26,900 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 19830 transitions. Word has length 174 [2022-01-28 13:50:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:50:26,900 INFO L470 AbstractCegarLoop]: Abstraction has 7179 states and 19830 transitions. [2022-01-28 13:50:26,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 4.0576923076923075) internal successors, (422), 104 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 19830 transitions. [2022-01-28 13:50:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-28 13:50:26,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:50:26,909 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:50:26,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-28 13:50:27,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-28 13:50:27,110 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:50:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:50:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1853100911, now seen corresponding path program 31 times [2022-01-28 13:50:27,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:50:27,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055493625] [2022-01-28 13:50:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:50:27,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:50:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:50:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:50:27,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:50:27,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055493625] [2022-01-28 13:50:27,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055493625] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:50:27,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39844421] [2022-01-28 13:50:27,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:50:27,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:27,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:50:27,923 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:50:27,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-28 13:50:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:50:28,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 95 conjunts are in the unsatisfiable core [2022-01-28 13:50:28,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:50:28,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:50:28,353 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:50:28,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:50:29,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-28 13:50:29,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:50:29,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-28 13:50:30,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:50:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:50:30,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:50:30,584 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1171 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1171) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 24)))) is different from false [2022-01-28 13:50:31,074 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1170)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select (select .cse0 c_~queue~0.base) (+ (* c_~size~0 4) .cse1 c_~queue~0.offset 24)))) (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1171) c_~queue~0.base) (+ .cse1 c_~queue~0.offset 24)))))) is different from false [2022-01-28 13:50:31,123 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1170)) (.cse1 (* c_~front~0 4))) (or (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1171) |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ |c_ULTIMATE.start_main_#t~ret9#1.offset| .cse1 24))) (not (= (select (select .cse0 |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ |c_ULTIMATE.start_main_#t~ret9#1.offset| (* c_~size~0 4) .cse1 24)) 5))))) is different from false [2022-01-28 13:50:31,141 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1170)) (.cse1 (* c_~front~0 4))) (or (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1171) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 24))) (not (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* c_~size~0 4) .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 24)) 5))))) is different from false [2022-01-28 13:50:31,149 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1170)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 24)))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1171) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 24)) 5)))) is different from false [2022-01-28 13:50:31,187 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:50:31,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-01-28 13:50:31,194 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:50:31,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 185 [2022-01-28 13:50:31,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:50:31,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 161 [2022-01-28 13:50:31,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 94 [2022-01-28 13:50:31,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-28 13:50:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 123 trivial. 31 not checked. [2022-01-28 13:50:31,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39844421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:50:31,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:50:31,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 42, 28] total 89 [2022-01-28 13:50:31,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219901384] [2022-01-28 13:50:31,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:50:31,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-28 13:50:31,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:50:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-28 13:50:31,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=6557, Unknown=5, NotChecked=840, Total=7832 [2022-01-28 13:50:31,945 INFO L87 Difference]: Start difference. First operand 7179 states and 19830 transitions. Second operand has 89 states, 89 states have (on average 4.404494382022472) internal successors, (392), 89 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:50:35,840 INFO L93 Difference]: Finished difference Result 19476 states and 53380 transitions. [2022-01-28 13:50:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-28 13:50:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.404494382022472) internal successors, (392), 89 states have internal predecessors, (392), 0 states have call successors, (0), 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 174 [2022-01-28 13:50:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:50:35,868 INFO L225 Difference]: With dead ends: 19476 [2022-01-28 13:50:35,868 INFO L226 Difference]: Without dead ends: 19346 [2022-01-28 13:50:35,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 304 SyntacticMatches, 6 SemanticMatches, 139 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 5569 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1233, Invalid=17142, Unknown=5, NotChecked=1360, Total=19740 [2022-01-28 13:50:35,869 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1587 mSDsluCounter, 10911 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 10289 SdHoareTripleChecker+Invalid, 7767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 4382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3258 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 13:50:35,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 10289 Invalid, 7767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 4382 Invalid, 0 Unknown, 3258 Unchecked, 1.5s Time] [2022-01-28 13:50:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19346 states. [2022-01-28 13:50:35,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19346 to 6155. [2022-01-28 13:50:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6155 states, 6154 states have (on average 2.7387065323366917) internal successors, (16854), 6154 states have internal predecessors, (16854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 16854 transitions. [2022-01-28 13:50:36,009 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 16854 transitions. Word has length 174 [2022-01-28 13:50:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:50:36,009 INFO L470 AbstractCegarLoop]: Abstraction has 6155 states and 16854 transitions. [2022-01-28 13:50:36,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.404494382022472) internal successors, (392), 89 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 16854 transitions. [2022-01-28 13:50:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-28 13:50:36,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:50:36,018 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:50:36,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-28 13:50:36,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:36,220 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:50:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:50:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1518196055, now seen corresponding path program 32 times [2022-01-28 13:50:36,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:50:36,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343810181] [2022-01-28 13:50:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:50:36,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:50:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:50:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-28 13:50:36,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:50:36,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343810181] [2022-01-28 13:50:36,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343810181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:50:36,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590277384] [2022-01-28 13:50:36,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:50:36,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:36,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:50:36,305 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:50:36,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-28 13:50:36,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:50:36,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:50:36,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 13:50:36,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:50:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-28 13:50:36,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:50:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-28 13:50:36,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590277384] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:50:36,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:50:36,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 11 [2022-01-28 13:50:36,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273114948] [2022-01-28 13:50:36,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:50:36,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 13:50:36,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:50:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 13:50:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-01-28 13:50:36,915 INFO L87 Difference]: Start difference. First operand 6155 states and 16854 transitions. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:50:37,012 INFO L93 Difference]: Finished difference Result 20198 states and 55723 transitions. [2022-01-28 13:50:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-28 13:50:37,013 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 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 177 [2022-01-28 13:50:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:50:37,045 INFO L225 Difference]: With dead ends: 20198 [2022-01-28 13:50:37,046 INFO L226 Difference]: Without dead ends: 18954 [2022-01-28 13:50:37,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-01-28 13:50:37,046 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 564 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:50:37,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 504 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:50:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18954 states. [2022-01-28 13:50:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18954 to 12808. [2022-01-28 13:50:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12808 states, 12807 states have (on average 2.779573670648864) internal successors, (35598), 12807 states have internal predecessors, (35598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 35598 transitions. [2022-01-28 13:50:37,317 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 35598 transitions. Word has length 177 [2022-01-28 13:50:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:50:37,318 INFO L470 AbstractCegarLoop]: Abstraction has 12808 states and 35598 transitions. [2022-01-28 13:50:37,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 35598 transitions. [2022-01-28 13:50:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-28 13:50:37,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:50:37,338 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:50:37,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-28 13:50:37,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:37,545 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:50:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:50:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash 785416879, now seen corresponding path program 33 times [2022-01-28 13:50:37,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:50:37,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094930557] [2022-01-28 13:50:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:50:37,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:50:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:50:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 71 proven. 175 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-28 13:50:37,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:50:37,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094930557] [2022-01-28 13:50:37,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094930557] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:50:37,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068437340] [2022-01-28 13:50:37,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:50:37,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:37,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:50:37,909 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:50:37,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-28 13:50:38,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-28 13:50:38,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:50:38,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-28 13:50:38,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:50:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 92 proven. 162 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-28 13:50:39,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:50:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 92 proven. 162 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-28 13:50:39,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068437340] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:50:39,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:50:39,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 74 [2022-01-28 13:50:39,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933571296] [2022-01-28 13:50:39,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:50:39,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-28 13:50:39,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:50:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-28 13:50:39,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=821, Invalid=4581, Unknown=0, NotChecked=0, Total=5402 [2022-01-28 13:50:39,949 INFO L87 Difference]: Start difference. First operand 12808 states and 35598 transitions. Second operand has 74 states, 74 states have (on average 5.202702702702703) internal successors, (385), 74 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:50:41,966 INFO L93 Difference]: Finished difference Result 23376 states and 62849 transitions. [2022-01-28 13:50:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-28 13:50:41,967 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.202702702702703) internal successors, (385), 74 states have internal predecessors, (385), 0 states have call successors, (0), 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 180 [2022-01-28 13:50:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:50:42,005 INFO L225 Difference]: With dead ends: 23376 [2022-01-28 13:50:42,006 INFO L226 Difference]: Without dead ends: 22368 [2022-01-28 13:50:42,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7026 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3420, Invalid=13872, Unknown=0, NotChecked=0, Total=17292 [2022-01-28 13:50:42,007 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 3798 mSDsluCounter, 4347 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3798 SdHoareTripleChecker+Valid, 4178 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-28 13:50:42,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3798 Valid, 4178 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-28 13:50:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22368 states. [2022-01-28 13:50:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22368 to 10491. [2022-01-28 13:50:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10491 states, 10490 states have (on average 2.781029551954242) internal successors, (29173), 10490 states have internal predecessors, (29173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10491 states to 10491 states and 29173 transitions. [2022-01-28 13:50:42,252 INFO L78 Accepts]: Start accepts. Automaton has 10491 states and 29173 transitions. Word has length 180 [2022-01-28 13:50:42,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:50:42,252 INFO L470 AbstractCegarLoop]: Abstraction has 10491 states and 29173 transitions. [2022-01-28 13:50:42,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.202702702702703) internal successors, (385), 74 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 10491 states and 29173 transitions. [2022-01-28 13:50:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-28 13:50:42,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:50:42,266 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:50:42,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-28 13:50:42,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-28 13:50:42,479 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:50:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:50:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1803179511, now seen corresponding path program 34 times [2022-01-28 13:50:42,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:50:42,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653994611] [2022-01-28 13:50:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:50:42,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:50:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:50:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 87 proven. 181 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-28 13:50:42,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:50:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653994611] [2022-01-28 13:50:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653994611] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:50:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572486370] [2022-01-28 13:50:42,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:50:42,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:42,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:50:42,860 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:50:42,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-28 13:50:42,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:50:42,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:50:42,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-28 13:50:42,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:50:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 114 proven. 154 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-28 13:50:44,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:50:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 107 proven. 161 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-28 13:50:45,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572486370] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:50:45,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:50:45,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2022-01-28 13:50:45,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091036399] [2022-01-28 13:50:45,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:50:45,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-28 13:50:45,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:50:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-28 13:50:45,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1311, Invalid=5829, Unknown=0, NotChecked=0, Total=7140 [2022-01-28 13:50:45,139 INFO L87 Difference]: Start difference. First operand 10491 states and 29173 transitions. Second operand has 85 states, 85 states have (on average 4.858823529411764) internal successors, (413), 85 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:50:47,491 INFO L93 Difference]: Finished difference Result 7208 states and 18839 transitions. [2022-01-28 13:50:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-28 13:50:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.858823529411764) internal successors, (413), 85 states have internal predecessors, (413), 0 states have call successors, (0), 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 180 [2022-01-28 13:50:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:50:47,500 INFO L225 Difference]: With dead ends: 7208 [2022-01-28 13:50:47,500 INFO L226 Difference]: Without dead ends: 4982 [2022-01-28 13:50:47,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8415 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4240, Invalid=17812, Unknown=0, NotChecked=0, Total=22052 [2022-01-28 13:50:47,502 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1769 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:50:47,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 3198 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 13:50:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2022-01-28 13:50:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4596. [2022-01-28 13:50:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4596 states, 4595 states have (on average 2.6605005440696408) internal successors, (12225), 4595 states have internal predecessors, (12225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4596 states to 4596 states and 12225 transitions. [2022-01-28 13:50:47,559 INFO L78 Accepts]: Start accepts. Automaton has 4596 states and 12225 transitions. Word has length 180 [2022-01-28 13:50:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:50:47,559 INFO L470 AbstractCegarLoop]: Abstraction has 4596 states and 12225 transitions. [2022-01-28 13:50:47,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.858823529411764) internal successors, (413), 85 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:50:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4596 states and 12225 transitions. [2022-01-28 13:50:47,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-28 13:50:47,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:50:47,565 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:50:47,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-28 13:50:47,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-28 13:50:47,766 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:50:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:50:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1321379986, now seen corresponding path program 35 times [2022-01-28 13:50:47,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:50:47,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379218494] [2022-01-28 13:50:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:50:47,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:50:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:50:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:50:48,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:50:48,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379218494] [2022-01-28 13:50:48,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379218494] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:50:48,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505072794] [2022-01-28 13:50:48,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:50:48,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:50:48,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:50:48,619 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:50:48,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-28 13:50:48,812 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-01-28 13:50:48,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:50:48,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 94 conjunts are in the unsatisfiable core [2022-01-28 13:50:48,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:50:50,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-28 13:50:50,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:50:50,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:50:51,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:50:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:50:51,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:50:52,073 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1371 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1371) c_~queue~0.base)) (.cse1 (* c_~front~0 4))) (or (= 5 (select .cse0 (+ .cse1 c_~queue~0.offset 28))) (not (= 5 (select .cse0 (+ (* c_~size~0 4) .cse1 c_~queue~0.offset 28))))))) is different from false [2022-01-28 13:50:52,125 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1371) c_~queue~0.base)) (.cse1 (* c_~front~0 4))) (or (= 5 (select .cse0 (+ .cse1 c_~queue~0.offset 28))) (not (= 5 (select .cse0 (+ (* c_~size~0 4) .cse1 c_~queue~0.offset 28))))))) is different from false [2022-01-28 13:50:52,163 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1371) |c_ULTIMATE.start_main_#t~ret9#1.base|)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select .cse0 (+ |c_ULTIMATE.start_main_#t~ret9#1.offset| (* c_~size~0 4) .cse1 28)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_#t~ret9#1.offset| .cse1 28)) 5)))) is different from false [2022-01-28 13:50:52,178 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1371) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|)) (.cse1 (* c_~front~0 4))) (or (= 5 (select .cse0 (+ .cse1 28 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))) (not (= 5 (select .cse0 (+ (* c_~size~0 4) .cse1 28 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))))))) is different from false [2022-01-28 13:50:52,186 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1371) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse1 (* c_~front~0 4))) (or (= (select .cse0 (+ .cse1 28 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5) (not (= (select .cse0 (+ (* c_~size~0 4) .cse1 28 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5))))) is different from false [2022-01-28 13:50:52,221 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:50:52,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2022-01-28 13:50:52,228 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2022-01-28 13:50:52,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 144 [2022-01-28 13:50:52,232 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-01-28 13:50:52,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 105 [2022-01-28 13:50:52,237 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-01-28 13:50:52,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 67 [2022-01-28 13:50:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 7 proven. 162 refuted. 0 times theorem prover too weak. 168 trivial. 51 not checked. [2022-01-28 13:50:52,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505072794] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:50:52,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:50:52,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 45, 27] total 102 [2022-01-28 13:50:52,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585251735] [2022-01-28 13:50:52,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:50:52,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-28 13:50:52,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:50:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-28 13:50:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=8840, Unknown=5, NotChecked=970, Total=10302 [2022-01-28 13:50:52,458 INFO L87 Difference]: Start difference. First operand 4596 states and 12225 transitions. Second operand has 102 states, 102 states have (on average 4.431372549019608) internal successors, (452), 102 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:51:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:51:06,811 INFO L93 Difference]: Finished difference Result 50839 states and 136599 transitions. [2022-01-28 13:51:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 360 states. [2022-01-28 13:51:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 4.431372549019608) internal successors, (452), 102 states have internal predecessors, (452), 0 states have call successors, (0), 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 187 [2022-01-28 13:51:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:51:06,909 INFO L225 Difference]: With dead ends: 50839 [2022-01-28 13:51:06,910 INFO L226 Difference]: Without dead ends: 50709 [2022-01-28 13:51:06,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 316 SyntacticMatches, 10 SemanticMatches, 431 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 75616 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=8861, Invalid=173910, Unknown=5, NotChecked=4280, Total=187056 [2022-01-28 13:51:06,918 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 9863 mSDsluCounter, 12018 mSDsCounter, 0 mSdLazyCounter, 6264 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9863 SdHoareTripleChecker+Valid, 11480 SdHoareTripleChecker+Invalid, 12189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 6264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5118 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:51:06,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9863 Valid, 11480 Invalid, 12189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 6264 Invalid, 0 Unknown, 5118 Unchecked, 2.6s Time] [2022-01-28 13:51:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50709 states. [2022-01-28 13:51:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50709 to 6026. [2022-01-28 13:51:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6025 states have (on average 2.6746887966804977) internal successors, (16115), 6025 states have internal predecessors, (16115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:51:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 16115 transitions. [2022-01-28 13:51:07,273 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 16115 transitions. Word has length 187 [2022-01-28 13:51:07,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:51:07,273 INFO L470 AbstractCegarLoop]: Abstraction has 6026 states and 16115 transitions. [2022-01-28 13:51:07,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 4.431372549019608) internal successors, (452), 102 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:51:07,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 16115 transitions. [2022-01-28 13:51:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-28 13:51:07,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:51:07,279 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:51:07,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-28 13:51:07,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-28 13:51:07,480 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:51:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:51:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash -650057136, now seen corresponding path program 36 times [2022-01-28 13:51:07,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:51:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447893851] [2022-01-28 13:51:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:51:07,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:51:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:51:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:51:08,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:51:08,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447893851] [2022-01-28 13:51:08,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447893851] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:51:08,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367723923] [2022-01-28 13:51:08,350 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:51:08,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:51:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:51:08,351 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:51:08,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-28 13:51:09,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-28 13:51:09,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:51:09,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-28 13:51:09,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:51:10,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-28 13:51:11,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:51:11,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:51:12,945 INFO L354 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-01-28 13:51:12,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-28 13:51:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 80 proven. 245 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-28 13:51:12,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:51:18,975 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:51:18,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2022-01-28 13:51:18,984 INFO L354 Elim1Store]: treesize reduction 7, result has 65.0 percent of original size [2022-01-28 13:51:18,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 149 [2022-01-28 13:51:18,994 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-28 13:51:18,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 104 [2022-01-28 13:51:19,002 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-28 13:51:19,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 67 [2022-01-28 13:51:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 30 proven. 288 refuted. 7 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-28 13:51:20,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367723923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:51:20,341 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:51:20,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 43, 40] total 114 [2022-01-28 13:51:20,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857130247] [2022-01-28 13:51:20,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:51:20,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-28 13:51:20,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:51:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-28 13:51:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=11534, Unknown=107, NotChecked=0, Total=12882 [2022-01-28 13:51:20,343 INFO L87 Difference]: Start difference. First operand 6026 states and 16115 transitions. Second operand has 114 states, 114 states have (on average 4.035087719298246) internal successors, (460), 114 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:51:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:51:55,729 INFO L93 Difference]: Finished difference Result 110941 states and 287670 transitions. [2022-01-28 13:51:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2022-01-28 13:51:55,730 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 4.035087719298246) internal successors, (460), 114 states have internal predecessors, (460), 0 states have call successors, (0), 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 187 [2022-01-28 13:51:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:51:55,979 INFO L225 Difference]: With dead ends: 110941 [2022-01-28 13:51:55,979 INFO L226 Difference]: Without dead ends: 106621 [2022-01-28 13:51:55,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 80330 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=18405, Invalid=183533, Unknown=112, NotChecked=0, Total=202050 [2022-01-28 13:51:55,987 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 10843 mSDsluCounter, 17882 mSDsCounter, 0 mSdLazyCounter, 4373 mSolverCounterSat, 1159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10843 SdHoareTripleChecker+Valid, 16017 SdHoareTripleChecker+Invalid, 16145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1159 IncrementalHoareTripleChecker+Valid, 4373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10613 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:51:55,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10843 Valid, 16017 Invalid, 16145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1159 Valid, 4373 Invalid, 0 Unknown, 10613 Unchecked, 2.1s Time] [2022-01-28 13:51:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106621 states. [2022-01-28 13:51:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106621 to 38934. [2022-01-28 13:51:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38934 states, 38933 states have (on average 2.824210823722806) internal successors, (109955), 38933 states have internal predecessors, (109955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:51:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38934 states to 38934 states and 109955 transitions. [2022-01-28 13:51:57,494 INFO L78 Accepts]: Start accepts. Automaton has 38934 states and 109955 transitions. Word has length 187 [2022-01-28 13:51:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:51:57,494 INFO L470 AbstractCegarLoop]: Abstraction has 38934 states and 109955 transitions. [2022-01-28 13:51:57,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 4.035087719298246) internal successors, (460), 114 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:51:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 38934 states and 109955 transitions. [2022-01-28 13:51:57,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-28 13:51:57,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:51:57,548 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:51:57,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-28 13:51:57,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-28 13:51:57,748 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:51:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:51:57,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1277750610, now seen corresponding path program 37 times [2022-01-28 13:51:57,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:51:57,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567445710] [2022-01-28 13:51:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:51:57,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:51:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:51:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:51:58,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:51:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567445710] [2022-01-28 13:51:58,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567445710] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:51:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395988701] [2022-01-28 13:51:58,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:51:58,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:51:58,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:51:58,700 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:51:58,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-28 13:51:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:51:58,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-28 13:51:58,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:52:00,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:52:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:52:00,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:52:00,488 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:52:00,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:52:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-01-28 13:52:00,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395988701] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:52:00,907 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:52:00,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36, 19] total 85 [2022-01-28 13:52:00,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883659782] [2022-01-28 13:52:00,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:52:00,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-28 13:52:00,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:52:00,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-28 13:52:00,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=6787, Unknown=0, NotChecked=0, Total=7140 [2022-01-28 13:52:00,908 INFO L87 Difference]: Start difference. First operand 38934 states and 109955 transitions. Second operand has 85 states, 85 states have (on average 4.976470588235294) internal successors, (423), 85 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:54:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:54:20,493 INFO L93 Difference]: Finished difference Result 842213 states and 2317155 transitions. [2022-01-28 13:54:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2557 states. [2022-01-28 13:54:20,493 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.976470588235294) internal successors, (423), 85 states have internal predecessors, (423), 0 states have call successors, (0), 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 187 [2022-01-28 13:54:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:54:23,985 INFO L225 Difference]: With dead ends: 842213 [2022-01-28 13:54:23,985 INFO L226 Difference]: Without dead ends: 765567 [2022-01-28 13:54:24,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2946 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 2614 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3330280 ImplicationChecksByTransitivity, 94.6s TimeCoverageRelationStatistics Valid=161439, Invalid=6679401, Unknown=0, NotChecked=0, Total=6840840 [2022-01-28 13:54:24,390 INFO L933 BasicCegarLoop]: 5634 mSDtfsCounter, 11439 mSDsluCounter, 205109 mSDsCounter, 0 mSdLazyCounter, 62151 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11439 SdHoareTripleChecker+Valid, 191169 SdHoareTripleChecker+Invalid, 63134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 62151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:54:24,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11439 Valid, 191169 Invalid, 63134 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [983 Valid, 62151 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2022-01-28 13:54:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765567 states. [2022-01-28 13:54:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765567 to 120686. [2022-01-28 13:54:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120686 states, 120685 states have (on average 2.962257115631603) internal successors, (357500), 120685 states have internal predecessors, (357500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:54:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120686 states to 120686 states and 357500 transitions. [2022-01-28 13:54:36,692 INFO L78 Accepts]: Start accepts. Automaton has 120686 states and 357500 transitions. Word has length 187 [2022-01-28 13:54:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:54:36,692 INFO L470 AbstractCegarLoop]: Abstraction has 120686 states and 357500 transitions. [2022-01-28 13:54:36,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.976470588235294) internal successors, (423), 85 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:54:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 120686 states and 357500 transitions. [2022-01-28 13:54:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-28 13:54:36,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:54:36,906 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:54:36,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-28 13:54:37,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:54:37,106 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:54:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:54:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1741565510, now seen corresponding path program 38 times [2022-01-28 13:54:37,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:54:37,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239399190] [2022-01-28 13:54:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:54:37,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:54:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:54:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:54:38,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:54:38,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239399190] [2022-01-28 13:54:38,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239399190] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:54:38,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815847295] [2022-01-28 13:54:38,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:54:38,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:54:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:54:38,261 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:54:38,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-28 13:54:38,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:54:38,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:54:38,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-28 13:54:38,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:54:39,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:54:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:54:39,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:54:40,036 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:54:40,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:54:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-01-28 13:54:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815847295] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:54:40,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:54:40,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36, 20] total 86 [2022-01-28 13:54:40,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598764003] [2022-01-28 13:54:40,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:54:40,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-28 13:54:40,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:54:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-28 13:54:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=6956, Unknown=0, NotChecked=0, Total=7310 [2022-01-28 13:54:40,480 INFO L87 Difference]: Start difference. First operand 120686 states and 357500 transitions. Second operand has 86 states, 86 states have (on average 5.058139534883721) internal successors, (435), 86 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:55:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:55:04,100 INFO L93 Difference]: Finished difference Result 666707 states and 1840816 transitions. [2022-01-28 13:55:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 504 states. [2022-01-28 13:55:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 5.058139534883721) internal successors, (435), 86 states have internal predecessors, (435), 0 states have call successors, (0), 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 187 [2022-01-28 13:55:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:55:06,303 INFO L225 Difference]: With dead ends: 666707 [2022-01-28 13:55:06,304 INFO L226 Difference]: Without dead ends: 506468 [2022-01-28 13:55:06,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 571 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143285 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=16749, Invalid=311007, Unknown=0, NotChecked=0, Total=327756 [2022-01-28 13:55:06,317 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 10391 mSDsluCounter, 19473 mSDsCounter, 0 mSdLazyCounter, 8492 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10391 SdHoareTripleChecker+Valid, 18610 SdHoareTripleChecker+Invalid, 9248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 8492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:55:06,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10391 Valid, 18610 Invalid, 9248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 8492 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-28 13:55:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506468 states. [2022-01-28 13:55:11,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506468 to 18523. [2022-01-28 13:55:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 2.819134002807472) internal successors, (52216), 18522 states have internal predecessors, (52216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:55:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 52216 transitions. [2022-01-28 13:55:11,475 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 52216 transitions. Word has length 187 [2022-01-28 13:55:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:55:11,475 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 52216 transitions. [2022-01-28 13:55:11,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 5.058139534883721) internal successors, (435), 86 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:55:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 52216 transitions. [2022-01-28 13:55:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-28 13:55:11,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:55:11,500 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:55:11,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-28 13:55:11,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-28 13:55:11,700 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:55:11,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:55:11,701 INFO L85 PathProgramCache]: Analyzing trace with hash -57376110, now seen corresponding path program 39 times [2022-01-28 13:55:11,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:55:11,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546776633] [2022-01-28 13:55:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:55:11,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:55:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:55:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:55:13,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:55:13,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546776633] [2022-01-28 13:55:13,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546776633] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:55:13,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567914239] [2022-01-28 13:55:13,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:55:13,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:55:13,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:55:13,019 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:55:13,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-28 13:55:13,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-28 13:55:13,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:55:13,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-28 13:55:13,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:55:15,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-28 13:55:15,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:55:15,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:55:15,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-01-28 13:55:19,127 INFO L354 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-01-28 13:55:19,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-28 13:55:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 63 proven. 241 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-28 13:55:19,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:55:21,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:55:21,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-01-28 13:55:21,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:55:21,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 106 [2022-01-28 13:55:21,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-01-28 13:55:21,850 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:55:21,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 58 [2022-01-28 13:55:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 63 proven. 241 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-28 13:55:24,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567914239] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:55:24,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:55:24,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 43, 43] total 122 [2022-01-28 13:55:24,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812194386] [2022-01-28 13:55:24,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:55:24,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-28 13:55:24,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:55:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-28 13:55:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1262, Invalid=13476, Unknown=24, NotChecked=0, Total=14762 [2022-01-28 13:55:24,316 INFO L87 Difference]: Start difference. First operand 18523 states and 52216 transitions. Second operand has 122 states, 122 states have (on average 3.737704918032787) internal successors, (456), 122 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:55:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:55:53,639 INFO L93 Difference]: Finished difference Result 55299 states and 150784 transitions. [2022-01-28 13:55:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-28 13:55:53,640 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 3.737704918032787) internal successors, (456), 122 states have internal predecessors, (456), 0 states have call successors, (0), 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 187 [2022-01-28 13:55:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:55:53,745 INFO L225 Difference]: With dead ends: 55299 [2022-01-28 13:55:53,745 INFO L226 Difference]: Without dead ends: 54525 [2022-01-28 13:55:53,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 365 SyntacticMatches, 15 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25383 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=7192, Invalid=58030, Unknown=58, NotChecked=0, Total=65280 [2022-01-28 13:55:53,748 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 4359 mSDsluCounter, 16009 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 15673 SdHoareTripleChecker+Invalid, 7094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3400 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:55:53,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4359 Valid, 15673 Invalid, 7094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 3410 Invalid, 0 Unknown, 3400 Unchecked, 1.3s Time] [2022-01-28 13:55:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54525 states. [2022-01-28 13:55:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54525 to 26483. [2022-01-28 13:55:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26483 states, 26482 states have (on average 2.8401933388716865) internal successors, (75214), 26482 states have internal predecessors, (75214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:55:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26483 states to 26483 states and 75214 transitions. [2022-01-28 13:55:54,512 INFO L78 Accepts]: Start accepts. Automaton has 26483 states and 75214 transitions. Word has length 187 [2022-01-28 13:55:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:55:54,512 INFO L470 AbstractCegarLoop]: Abstraction has 26483 states and 75214 transitions. [2022-01-28 13:55:54,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.737704918032787) internal successors, (456), 122 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:55:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 26483 states and 75214 transitions. [2022-01-28 13:55:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-28 13:55:54,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:55:54,686 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:55:54,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-01-28 13:55:54,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-28 13:55:54,903 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:55:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:55:54,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1948832234, now seen corresponding path program 40 times [2022-01-28 13:55:54,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:55:54,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768885580] [2022-01-28 13:55:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:55:54,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:55:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:55:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:55:56,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:55:56,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768885580] [2022-01-28 13:55:56,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768885580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:55:56,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057890182] [2022-01-28 13:55:56,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:55:56,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:55:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:55:56,205 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:55:56,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-28 13:55:56,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:55:56,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:55:56,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 98 conjunts are in the unsatisfiable core [2022-01-28 13:55:56,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:55:56,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:55:56,486 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:55:56,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:55:58,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:55:58,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:55:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:55:58,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:55:59,035 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1641 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1641) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 28)))) is different from false [2022-01-28 13:55:59,043 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:55:59,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-28 13:55:59,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:56:00,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-28 13:56:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-28 13:56:00,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057890182] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:56:00,072 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:56:00,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 43, 28] total 105 [2022-01-28 13:56:00,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666666184] [2022-01-28 13:56:00,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:56:00,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-28 13:56:00,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:56:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-28 13:56:00,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=10199, Unknown=1, NotChecked=204, Total=10920 [2022-01-28 13:56:00,074 INFO L87 Difference]: Start difference. First operand 26483 states and 75214 transitions. Second operand has 105 states, 105 states have (on average 4.238095238095238) internal successors, (445), 105 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:56:06,748 INFO L93 Difference]: Finished difference Result 53897 states and 150633 transitions. [2022-01-28 13:56:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-28 13:56:06,748 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 4.238095238095238) internal successors, (445), 105 states have internal predecessors, (445), 0 states have call successors, (0), 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 187 [2022-01-28 13:56:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:56:06,929 INFO L225 Difference]: With dead ends: 53897 [2022-01-28 13:56:06,930 INFO L226 Difference]: Without dead ends: 53730 [2022-01-28 13:56:06,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 11465 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1656, Invalid=33879, Unknown=1, NotChecked=374, Total=35910 [2022-01-28 13:56:06,931 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 2925 mSDsluCounter, 13493 mSDsCounter, 0 mSdLazyCounter, 6925 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2925 SdHoareTripleChecker+Valid, 12863 SdHoareTripleChecker+Invalid, 7893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 6925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 703 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:56:06,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2925 Valid, 12863 Invalid, 7893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 6925 Invalid, 0 Unknown, 703 Unchecked, 2.4s Time] [2022-01-28 13:56:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53730 states. [2022-01-28 13:56:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53730 to 22470. [2022-01-28 13:56:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22470 states, 22469 states have (on average 2.842761137567315) internal successors, (63874), 22469 states have internal predecessors, (63874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22470 states to 22470 states and 63874 transitions. [2022-01-28 13:56:07,576 INFO L78 Accepts]: Start accepts. Automaton has 22470 states and 63874 transitions. Word has length 187 [2022-01-28 13:56:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:56:07,576 INFO L470 AbstractCegarLoop]: Abstraction has 22470 states and 63874 transitions. [2022-01-28 13:56:07,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 4.238095238095238) internal successors, (445), 105 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 22470 states and 63874 transitions. [2022-01-28 13:56:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-28 13:56:07,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:56:07,609 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:56:07,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-28 13:56:07,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-28 13:56:07,810 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:56:07,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:56:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash -628700816, now seen corresponding path program 41 times [2022-01-28 13:56:07,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:56:07,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325897698] [2022-01-28 13:56:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:56:07,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:56:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:56:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-28 13:56:07,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:56:07,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325897698] [2022-01-28 13:56:07,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325897698] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:56:07,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846446252] [2022-01-28 13:56:07,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:56:07,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:56:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:56:07,906 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:56:07,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-28 13:56:08,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-01-28 13:56:08,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:56:08,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-28 13:56:08,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:56:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-28 13:56:08,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:56:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-28 13:56:08,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846446252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:56:08,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:56:08,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 12 [2022-01-28 13:56:08,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572736455] [2022-01-28 13:56:08,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:56:08,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-28 13:56:08,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:56:08,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-28 13:56:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-01-28 13:56:08,716 INFO L87 Difference]: Start difference. First operand 22470 states and 63874 transitions. Second operand has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:56:08,989 INFO L93 Difference]: Finished difference Result 68580 states and 194085 transitions. [2022-01-28 13:56:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 13:56:08,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 0 states have call successors, (0), 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 190 [2022-01-28 13:56:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:56:09,272 INFO L225 Difference]: With dead ends: 68580 [2022-01-28 13:56:09,272 INFO L226 Difference]: Without dead ends: 65347 [2022-01-28 13:56:09,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-01-28 13:56:09,273 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 568 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:56:09,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 521 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:56:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65347 states. [2022-01-28 13:56:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65347 to 48609. [2022-01-28 13:56:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48609 states, 48608 states have (on average 2.8797317314022384) internal successors, (139978), 48608 states have internal predecessors, (139978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48609 states to 48609 states and 139978 transitions. [2022-01-28 13:56:10,464 INFO L78 Accepts]: Start accepts. Automaton has 48609 states and 139978 transitions. Word has length 190 [2022-01-28 13:56:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:56:10,465 INFO L470 AbstractCegarLoop]: Abstraction has 48609 states and 139978 transitions. [2022-01-28 13:56:10,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 48609 states and 139978 transitions. [2022-01-28 13:56:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-28 13:56:10,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:56:10,538 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:56:10,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-28 13:56:10,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:56:10,739 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:56:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:56:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash 564674558, now seen corresponding path program 42 times [2022-01-28 13:56:10,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:56:10,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784696057] [2022-01-28 13:56:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:56:10,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:56:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:56:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 93 proven. 228 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-01-28 13:56:11,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:56:11,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784696057] [2022-01-28 13:56:11,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784696057] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:56:11,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359021248] [2022-01-28 13:56:11,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:56:11,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:56:11,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:56:11,182 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:56:11,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-28 13:56:12,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-01-28 13:56:12,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:56:12,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-28 13:56:12,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:56:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 117 proven. 204 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-01-28 13:56:13,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:56:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 93 proven. 228 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-01-28 13:56:14,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359021248] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:56:14,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:56:14,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2022-01-28 13:56:14,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252978669] [2022-01-28 13:56:14,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:56:14,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-28 13:56:14,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:56:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-28 13:56:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1480, Invalid=6710, Unknown=0, NotChecked=0, Total=8190 [2022-01-28 13:56:14,527 INFO L87 Difference]: Start difference. First operand 48609 states and 139978 transitions. Second operand has 91 states, 91 states have (on average 4.769230769230769) internal successors, (434), 91 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:56:17,572 INFO L93 Difference]: Finished difference Result 14470 states and 37527 transitions. [2022-01-28 13:56:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-28 13:56:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 4.769230769230769) internal successors, (434), 91 states have internal predecessors, (434), 0 states have call successors, (0), 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 193 [2022-01-28 13:56:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:56:17,581 INFO L225 Difference]: With dead ends: 14470 [2022-01-28 13:56:17,582 INFO L226 Difference]: Without dead ends: 5983 [2022-01-28 13:56:17,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10391 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5253, Invalid=22137, Unknown=0, NotChecked=0, Total=27390 [2022-01-28 13:56:17,583 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1682 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:56:17,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 3227 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 13:56:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5983 states. [2022-01-28 13:56:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5983 to 5561. [2022-01-28 13:56:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5561 states, 5560 states have (on average 2.6656474820143883) internal successors, (14821), 5560 states have internal predecessors, (14821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:17,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 14821 transitions. [2022-01-28 13:56:17,648 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 14821 transitions. Word has length 193 [2022-01-28 13:56:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:56:17,648 INFO L470 AbstractCegarLoop]: Abstraction has 5561 states and 14821 transitions. [2022-01-28 13:56:17,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 4.769230769230769) internal successors, (434), 91 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 14821 transitions. [2022-01-28 13:56:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-28 13:56:17,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:56:17,654 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:56:17,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-28 13:56:17,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:56:17,855 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:56:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:56:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash -768737529, now seen corresponding path program 43 times [2022-01-28 13:56:17,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:56:17,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117139022] [2022-01-28 13:56:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:56:17,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:56:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:56:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:56:18,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:56:18,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117139022] [2022-01-28 13:56:18,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117139022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:56:18,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624843491] [2022-01-28 13:56:18,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:56:18,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:56:18,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:56:18,996 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:56:18,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-28 13:56:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:56:19,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 92 conjunts are in the unsatisfiable core [2022-01-28 13:56:19,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:56:20,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:56:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 493 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:56:20,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:56:20,911 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-28 13:56:20,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-28 13:56:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-28 13:56:21,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624843491] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:56:21,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:56:21,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 23] total 72 [2022-01-28 13:56:21,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22709699] [2022-01-28 13:56:21,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:56:21,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-28 13:56:21,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:56:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-28 13:56:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=4844, Unknown=0, NotChecked=0, Total=5112 [2022-01-28 13:56:21,430 INFO L87 Difference]: Start difference. First operand 5561 states and 14821 transitions. Second operand has 72 states, 72 states have (on average 4.805555555555555) internal successors, (346), 72 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:56:36,847 INFO L93 Difference]: Finished difference Result 72168 states and 192856 transitions. [2022-01-28 13:56:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2022-01-28 13:56:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.805555555555555) internal successors, (346), 72 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2022-01-28 13:56:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:56:36,952 INFO L225 Difference]: With dead ends: 72168 [2022-01-28 13:56:36,952 INFO L226 Difference]: Without dead ends: 53029 [2022-01-28 13:56:36,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 369 SyntacticMatches, 6 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79957 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=10995, Invalid=179537, Unknown=0, NotChecked=0, Total=190532 [2022-01-28 13:56:36,964 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 18839 mSDsluCounter, 27762 mSDsCounter, 0 mSdLazyCounter, 11885 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18839 SdHoareTripleChecker+Valid, 25509 SdHoareTripleChecker+Invalid, 12943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 11885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-28 13:56:36,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18839 Valid, 25509 Invalid, 12943 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 11885 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-01-28 13:56:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53029 states. [2022-01-28 13:56:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53029 to 1746. [2022-01-28 13:56:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1745 states have (on average 2.4830945558739255) internal successors, (4333), 1745 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4333 transitions. [2022-01-28 13:56:37,335 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4333 transitions. Word has length 200 [2022-01-28 13:56:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:56:37,335 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 4333 transitions. [2022-01-28 13:56:37,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.805555555555555) internal successors, (346), 72 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4333 transitions. [2022-01-28 13:56:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-28 13:56:37,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:56:37,337 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:56:37,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-28 13:56:37,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-28 13:56:37,538 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:56:37,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:56:37,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2030479371, now seen corresponding path program 44 times [2022-01-28 13:56:37,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:56:37,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863151523] [2022-01-28 13:56:37,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:56:37,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:56:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:56:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:56:38,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:56:38,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863151523] [2022-01-28 13:56:38,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863151523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:56:38,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961860327] [2022-01-28 13:56:38,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:56:38,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:56:38,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:56:38,640 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:56:38,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-28 13:56:38,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:56:38,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:56:38,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 95 conjunts are in the unsatisfiable core [2022-01-28 13:56:38,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:56:40,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:56:40,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:56:41,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-28 13:56:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 493 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:56:41,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:56:41,858 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1858 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1858) c_~queue~0.base) (+ 32 (* c_~front~0 4) c_~queue~0.offset)))) is different from false [2022-01-28 13:56:41,866 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:56:41,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-28 13:56:41,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:56:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-28 13:56:43,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961860327] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:56:43,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:56:43,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 30] total 111 [2022-01-28 13:56:43,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429824896] [2022-01-28 13:56:43,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:56:43,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-28 13:56:43,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:56:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-28 13:56:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=11522, Unknown=1, NotChecked=216, Total=12210 [2022-01-28 13:56:43,016 INFO L87 Difference]: Start difference. First operand 1746 states and 4333 transitions. Second operand has 111 states, 111 states have (on average 4.099099099099099) internal successors, (455), 111 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:51,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:56:51,319 INFO L93 Difference]: Finished difference Result 5109 states and 13364 transitions. [2022-01-28 13:56:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-28 13:56:51,320 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 4.099099099099099) internal successors, (455), 111 states have internal predecessors, (455), 0 states have call successors, (0), 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 200 [2022-01-28 13:56:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:56:51,327 INFO L225 Difference]: With dead ends: 5109 [2022-01-28 13:56:51,327 INFO L226 Difference]: Without dead ends: 4979 [2022-01-28 13:56:51,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 197 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11129 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2089, Invalid=36920, Unknown=1, NotChecked=392, Total=39402 [2022-01-28 13:56:51,329 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 5051 mSDsluCounter, 19344 mSDsCounter, 0 mSdLazyCounter, 9751 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5051 SdHoareTripleChecker+Valid, 18329 SdHoareTripleChecker+Invalid, 10673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 9751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 529 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:56:51,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5051 Valid, 18329 Invalid, 10673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 9751 Invalid, 0 Unknown, 529 Unchecked, 3.4s Time] [2022-01-28 13:56:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2022-01-28 13:56:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 1739. [2022-01-28 13:56:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 2.4850402761795167) internal successors, (4319), 1738 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 4319 transitions. [2022-01-28 13:56:51,357 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 4319 transitions. Word has length 200 [2022-01-28 13:56:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:56:51,357 INFO L470 AbstractCegarLoop]: Abstraction has 1739 states and 4319 transitions. [2022-01-28 13:56:51,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 4.099099099099099) internal successors, (455), 111 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:56:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 4319 transitions. [2022-01-28 13:56:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-28 13:56:51,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:56:51,359 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:56:51,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-28 13:56:51,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-28 13:56:51,560 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:56:51,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:56:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash -835373013, now seen corresponding path program 45 times [2022-01-28 13:56:51,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:56:51,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124859890] [2022-01-28 13:56:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:56:51,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:56:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:56:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-28 13:56:51,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:56:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124859890] [2022-01-28 13:56:51,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124859890] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:56:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488030281] [2022-01-28 13:56:51,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:56:51,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:56:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:56:51,677 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:56:51,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-28 13:56:52,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-01-28 13:56:52,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:56:52,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-28 13:56:52,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:56:54,265 INFO L354 Elim1Store]: treesize reduction 126, result has 2.3 percent of original size [2022-01-28 13:56:54,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 19 [2022-01-28 13:56:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 105 proven. 388 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-28 13:56:54,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:56:55,030 INFO L354 Elim1Store]: treesize reduction 175, result has 22.2 percent of original size [2022-01-28 13:56:55,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 69 [2022-01-28 13:56:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 15 proven. 478 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-28 13:56:57,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488030281] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:56:57,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:56:57,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 43, 43] total 91 [2022-01-28 13:56:57,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844934561] [2022-01-28 13:56:57,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:56:57,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-28 13:56:57,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:56:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-28 13:56:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1024, Invalid=7166, Unknown=0, NotChecked=0, Total=8190 [2022-01-28 13:56:57,196 INFO L87 Difference]: Start difference. First operand 1739 states and 4319 transitions. Second operand has 91 states, 91 states have (on average 5.373626373626373) internal successors, (489), 91 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)