/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/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 13:58:07,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 13:58:07,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 13:58:07,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 13:58:07,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 13:58:07,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 13:58:07,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 13:58:07,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 13:58:07,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 13:58:07,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 13:58:07,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 13:58:07,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 13:58:07,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 13:58:07,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 13:58:07,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 13:58:07,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 13:58:07,981 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 13:58:07,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 13:58:07,982 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 13:58:07,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 13:58:07,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 13:58:07,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 13:58:07,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 13:58:07,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 13:58:07,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 13:58:07,983 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 13:58:07,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 13:58:07,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 13:58:07,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 13:58:07,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 13:58:07,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 13:58:07,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 13:58:07,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 13:58:07,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:58:07,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 13:58:07,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 13:58:07,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 13:58:07,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 13:58:07,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 13:58:07,985 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 13:58:07,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 13:58:07,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 13:58:08,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 13:58:08,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 13:58:08,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 13:58:08,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 13:58:08,220 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 13:58:08,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-03-15 13:58:08,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3824aa377/6b6f006d8364438d950efcdcc6146acd/FLAG0ca794126 [2022-03-15 13:58:08,643 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 13:58:08,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-03-15 13:58:08,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3824aa377/6b6f006d8364438d950efcdcc6146acd/FLAG0ca794126 [2022-03-15 13:58:09,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3824aa377/6b6f006d8364438d950efcdcc6146acd [2022-03-15 13:58:09,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 13:58:09,071 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 13:58:09,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 13:58:09,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 13:58:09,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 13:58:09,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15de7a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09, skipping insertion in model container [2022-03-15 13:58:09,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 13:58:09,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 13:58:09,276 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/parallel-lamport.wvr.c[4210,4223] [2022-03-15 13:58:09,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:58:09,291 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 13:58:09,312 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/parallel-lamport.wvr.c[4210,4223] [2022-03-15 13:58:09,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:58:09,326 INFO L208 MainTranslator]: Completed translation [2022-03-15 13:58:09,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09 WrapperNode [2022-03-15 13:58:09,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 13:58:09,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 13:58:09,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 13:58:09,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 13:58:09,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,379 INFO L137 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-03-15 13:58:09,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 13:58:09,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 13:58:09,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 13:58:09,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 13:58:09,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 13:58:09,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 13:58:09,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 13:58:09,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 13:58:09,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (1/1) ... [2022-03-15 13:58:09,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:58:09,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:09,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 13:58:09,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 13:58:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 13:58:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 13:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 13:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 13:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 13:58:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 13:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 13:58:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 13:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 13:58:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 13:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 13:58:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 13:58:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 13:58:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 13:58:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 13:58:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 13:58:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 13:58:09,481 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 13:58:09,562 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 13:58:09,564 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 13:58:09,866 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 13:58:09,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 13:58:09,931 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-15 13:58:09,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:58:09 BoogieIcfgContainer [2022-03-15 13:58:09,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 13:58:09,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 13:58:09,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 13:58:09,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 13:58:09,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 01:58:09" (1/3) ... [2022-03-15 13:58:09,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b1bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:58:09, skipping insertion in model container [2022-03-15 13:58:09,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:58:09" (2/3) ... [2022-03-15 13:58:09,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b1bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:58:09, skipping insertion in model container [2022-03-15 13:58:09,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:58:09" (3/3) ... [2022-03-15 13:58:09,943 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-03-15 13:58:09,947 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 13:58:09,947 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 13:58:09,947 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 13:58:09,947 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 13:58:09,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,985 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:09,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:58:10,006 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 13:58:10,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 13:58:10,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 13:58:10,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 13:58:10,068 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 189 places, 186 transitions, 396 flow [2022-03-15 13:58:10,329 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5515 states, 5514 states have (on average 3.2183532825535) internal successors, (17746), 5514 states have internal predecessors, (17746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:10,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 5515 states, 5514 states have (on average 3.2183532825535) internal successors, (17746), 5514 states have internal predecessors, (17746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-15 13:58:10,437 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:10,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:10,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash -62683804, now seen corresponding path program 1 times [2022-03-15 13:58:10,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:10,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491430638] [2022-03-15 13:58:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:10,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:10,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491430638] [2022-03-15 13:58:10,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491430638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:10,779 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:10,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 13:58:10,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461376871] [2022-03-15 13:58:10,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:10,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 13:58:10,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 13:58:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:58:10,838 INFO L87 Difference]: Start difference. First operand has 5515 states, 5514 states have (on average 3.2183532825535) internal successors, (17746), 5514 states have internal predecessors, (17746), 0 states have call successors, (0), 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 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:10,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:10,952 INFO L93 Difference]: Finished difference Result 5515 states and 17740 transitions. [2022-03-15 13:58:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 13:58:10,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-15 13:58:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:11,015 INFO L225 Difference]: With dead ends: 5515 [2022-03-15 13:58:11,015 INFO L226 Difference]: Without dead ends: 5510 [2022-03-15 13:58:11,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:58:11,020 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:11,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:58:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2022-03-15 13:58:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5510. [2022-03-15 13:58:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5509 states have (on average 3.21927754583409) internal successors, (17735), 5509 states have internal predecessors, (17735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 17735 transitions. [2022-03-15 13:58:11,298 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 17735 transitions. Word has length 154 [2022-03-15 13:58:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:11,300 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 17735 transitions. [2022-03-15 13:58:11,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 17735 transitions. [2022-03-15 13:58:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-15 13:58:11,322 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:11,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:11,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 13:58:11,323 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:11,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1271926043, now seen corresponding path program 1 times [2022-03-15 13:58:11,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:11,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561120337] [2022-03-15 13:58:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:11,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:11,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561120337] [2022-03-15 13:58:11,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561120337] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:11,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:11,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:58:11,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403201327] [2022-03-15 13:58:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:11,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:58:11,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:58:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:58:11,751 INFO L87 Difference]: Start difference. First operand 5510 states and 17735 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:11,985 INFO L93 Difference]: Finished difference Result 6729 states and 21181 transitions. [2022-03-15 13:58:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 13:58:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-15 13:58:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:12,021 INFO L225 Difference]: With dead ends: 6729 [2022-03-15 13:58:12,022 INFO L226 Difference]: Without dead ends: 5516 [2022-03-15 13:58:12,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-15 13:58:12,024 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 414 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:12,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 564 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:58:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2022-03-15 13:58:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5511. [2022-03-15 13:58:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5511 states, 5510 states have (on average 3.218874773139746) internal successors, (17736), 5510 states have internal predecessors, (17736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 17736 transitions. [2022-03-15 13:58:12,223 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 17736 transitions. Word has length 154 [2022-03-15 13:58:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:12,226 INFO L470 AbstractCegarLoop]: Abstraction has 5511 states and 17736 transitions. [2022-03-15 13:58:12,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 17736 transitions. [2022-03-15 13:58:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:12,244 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:12,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:12,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 13:58:12,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -771383289, now seen corresponding path program 1 times [2022-03-15 13:58:12,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:12,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367557216] [2022-03-15 13:58:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:12,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:12,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367557216] [2022-03-15 13:58:12,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367557216] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:12,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:12,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:58:12,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463284326] [2022-03-15 13:58:12,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:12,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:58:12,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:58:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:58:12,451 INFO L87 Difference]: Start difference. First operand 5511 states and 17736 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:12,522 INFO L93 Difference]: Finished difference Result 5511 states and 17646 transitions. [2022-03-15 13:58:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:58:12,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:58:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:12,567 INFO L225 Difference]: With dead ends: 5511 [2022-03-15 13:58:12,567 INFO L226 Difference]: Without dead ends: 5511 [2022-03-15 13:58:12,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:58:12,612 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 19 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:12,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 305 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:58:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2022-03-15 13:58:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 5511. [2022-03-15 13:58:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5511 states, 5510 states have (on average 3.202540834845735) internal successors, (17646), 5510 states have internal predecessors, (17646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 17646 transitions. [2022-03-15 13:58:12,766 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 17646 transitions. Word has length 161 [2022-03-15 13:58:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:12,768 INFO L470 AbstractCegarLoop]: Abstraction has 5511 states and 17646 transitions. [2022-03-15 13:58:12,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 17646 transitions. [2022-03-15 13:58:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:12,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:12,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:12,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 13:58:12,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1328137583, now seen corresponding path program 2 times [2022-03-15 13:58:12,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:12,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570024293] [2022-03-15 13:58:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:12,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:13,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:13,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570024293] [2022-03-15 13:58:13,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570024293] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:13,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047012242] [2022-03-15 13:58:13,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:58:13,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:13,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:13,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 13:58:13,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 13:58:13,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:13,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:58:14,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:14,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:14,242 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:58:14,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:58:15,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-03-15 13:58:15,153 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:15,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:58:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:15,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:58:15,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047012242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:15,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:58:15,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [25] total 41 [2022-03-15 13:58:15,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196943803] [2022-03-15 13:58:15,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:15,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:58:15,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:58:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:58:15,226 INFO L87 Difference]: Start difference. First operand 5511 states and 17646 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:16,319 INFO L93 Difference]: Finished difference Result 8243 states and 26078 transitions. [2022-03-15 13:58:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:58:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:58:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:16,347 INFO L225 Difference]: With dead ends: 8243 [2022-03-15 13:58:16,348 INFO L226 Difference]: Without dead ends: 7652 [2022-03-15 13:58:16,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=346, Invalid=3436, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 13:58:16,351 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 879 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:16,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 2609 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 988 Invalid, 0 Unknown, 121 Unchecked, 0.4s Time] [2022-03-15 13:58:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7652 states. [2022-03-15 13:58:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7652 to 6409. [2022-03-15 13:58:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6409 states, 6408 states have (on average 3.1624531835205993) internal successors, (20265), 6408 states have internal predecessors, (20265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6409 states to 6409 states and 20265 transitions. [2022-03-15 13:58:16,556 INFO L78 Accepts]: Start accepts. Automaton has 6409 states and 20265 transitions. Word has length 161 [2022-03-15 13:58:16,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:16,556 INFO L470 AbstractCegarLoop]: Abstraction has 6409 states and 20265 transitions. [2022-03-15 13:58:16,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:16,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6409 states and 20265 transitions. [2022-03-15 13:58:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:16,573 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:16,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:16,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-15 13:58:16,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:16,797 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:16,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1434637025, now seen corresponding path program 3 times [2022-03-15 13:58:16,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:16,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160318078] [2022-03-15 13:58:16,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:16,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:17,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:17,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160318078] [2022-03-15 13:58:17,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160318078] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:17,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445956525] [2022-03-15 13:58:17,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:58:17,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:17,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:17,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:17,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 13:58:17,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 13:58:17,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:17,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:58:17,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:17,538 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:17,646 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:58:17,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:58:18,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-03-15 13:58:18,420 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:18,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:58:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:18,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:58:18,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445956525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:18,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:58:18,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [23] total 38 [2022-03-15 13:58:18,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006006587] [2022-03-15 13:58:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:18,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:58:18,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:58:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:58:18,457 INFO L87 Difference]: Start difference. First operand 6409 states and 20265 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:19,453 INFO L93 Difference]: Finished difference Result 8148 states and 25639 transitions. [2022-03-15 13:58:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:58:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:58:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:19,479 INFO L225 Difference]: With dead ends: 8148 [2022-03-15 13:58:19,479 INFO L226 Difference]: Without dead ends: 7183 [2022-03-15 13:58:19,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=341, Invalid=2965, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 13:58:19,481 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 911 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:19,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2369 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 938 Invalid, 0 Unknown, 218 Unchecked, 0.4s Time] [2022-03-15 13:58:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7183 states. [2022-03-15 13:58:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7183 to 5940. [2022-03-15 13:58:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.184711230846944) internal successors, (18914), 5939 states have internal predecessors, (18914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:19,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 18914 transitions. [2022-03-15 13:58:19,650 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 18914 transitions. Word has length 161 [2022-03-15 13:58:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:19,651 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 18914 transitions. [2022-03-15 13:58:19,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 18914 transitions. [2022-03-15 13:58:19,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:19,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:19,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:19,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-15 13:58:19,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:19,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1776409103, now seen corresponding path program 4 times [2022-03-15 13:58:19,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:19,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625545807] [2022-03-15 13:58:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:20,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:20,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625545807] [2022-03-15 13:58:20,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625545807] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:20,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88129329] [2022-03-15 13:58:20,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:58:20,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:20,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:20,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:20,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 13:58:20,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:58:20,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:20,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 13:58:20,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:21,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 13:58:21,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:21,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:21,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:22,159 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-15 13:58:22,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-15 13:58:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:22,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:58:25,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:25,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2022-03-15 13:58:25,907 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 13:58:25,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 185 [2022-03-15 13:58:25,921 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 13:58:25,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 130 [2022-03-15 13:58:25,929 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 13:58:25,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 106 [2022-03-15 13:58:25,939 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 13:58:25,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2022-03-15 13:58:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:26,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88129329] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:58:26,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:58:26,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 22] total 59 [2022-03-15 13:58:26,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842174535] [2022-03-15 13:58:26,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:58:26,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-15 13:58:26,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-15 13:58:26,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2900, Unknown=145, NotChecked=0, Total=3422 [2022-03-15 13:58:26,332 INFO L87 Difference]: Start difference. First operand 5940 states and 18914 transitions. Second operand has 59 states, 59 states have (on average 6.406779661016949) internal successors, (378), 59 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:29,520 INFO L93 Difference]: Finished difference Result 14142 states and 44780 transitions. [2022-03-15 13:58:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 13:58:29,521 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.406779661016949) internal successors, (378), 59 states have internal predecessors, (378), 0 states have call successors, (0), 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 [2022-03-15 13:58:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:29,570 INFO L225 Difference]: With dead ends: 14142 [2022-03-15 13:58:29,571 INFO L226 Difference]: Without dead ends: 13785 [2022-03-15 13:58:29,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1440, Invalid=5897, Unknown=145, NotChecked=0, Total=7482 [2022-03-15 13:58:29,573 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 3050 mSDsluCounter, 5304 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 4734 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 685 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:29,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 4734 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2034 Invalid, 0 Unknown, 685 Unchecked, 0.9s Time] [2022-03-15 13:58:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13785 states. [2022-03-15 13:58:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13785 to 7999. [2022-03-15 13:58:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7999 states, 7998 states have (on average 3.1749187296824206) internal successors, (25393), 7998 states have internal predecessors, (25393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 25393 transitions. [2022-03-15 13:58:29,906 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 25393 transitions. Word has length 161 [2022-03-15 13:58:29,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:29,906 INFO L470 AbstractCegarLoop]: Abstraction has 7999 states and 25393 transitions. [2022-03-15 13:58:29,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.406779661016949) internal successors, (378), 59 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 25393 transitions. [2022-03-15 13:58:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:29,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:29,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:29,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 13:58:30,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:30,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:30,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1344523863, now seen corresponding path program 5 times [2022-03-15 13:58:30,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:30,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705388031] [2022-03-15 13:58:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:30,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:30,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:30,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705388031] [2022-03-15 13:58:30,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705388031] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:30,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840691543] [2022-03-15 13:58:30,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:58:30,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:30,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:30,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:30,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 13:58:30,661 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:58:30,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:30,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-15 13:58:30,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:31,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:58:31,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-15 13:58:32,371 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-15 13:58:32,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 13 [2022-03-15 13:58:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:32,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:58:33,278 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:33,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 72 [2022-03-15 13:58:33,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-03-15 13:58:33,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-03-15 13:58:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:34,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840691543] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:58:34,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:58:34,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 26] total 64 [2022-03-15 13:58:34,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189431534] [2022-03-15 13:58:34,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:58:34,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-15 13:58:34,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-15 13:58:34,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=3803, Unknown=13, NotChecked=0, Total=4032 [2022-03-15 13:58:34,782 INFO L87 Difference]: Start difference. First operand 7999 states and 25393 transitions. Second operand has 64 states, 64 states have (on average 6.484375) internal successors, (415), 64 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:43,333 INFO L93 Difference]: Finished difference Result 25263 states and 79209 transitions. [2022-03-15 13:58:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-15 13:58:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.484375) internal successors, (415), 64 states have internal predecessors, (415), 0 states have call successors, (0), 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 [2022-03-15 13:58:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:43,422 INFO L225 Difference]: With dead ends: 25263 [2022-03-15 13:58:43,422 INFO L226 Difference]: Without dead ends: 24340 [2022-03-15 13:58:43,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 293 SyntacticMatches, 58 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 9046 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2756, Invalid=18104, Unknown=20, NotChecked=0, Total=20880 [2022-03-15 13:58:43,428 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 4156 mSDsluCounter, 15400 mSDsCounter, 0 mSdLazyCounter, 3708 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4156 SdHoareTripleChecker+Valid, 13627 SdHoareTripleChecker+Invalid, 7611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3764 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:43,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4156 Valid, 13627 Invalid, 7611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3708 Invalid, 0 Unknown, 3764 Unchecked, 1.5s Time] [2022-03-15 13:58:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24340 states. [2022-03-15 13:58:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24340 to 11871. [2022-03-15 13:58:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11871 states, 11870 states have (on average 3.171524852569503) internal successors, (37646), 11870 states have internal predecessors, (37646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11871 states to 11871 states and 37646 transitions. [2022-03-15 13:58:43,929 INFO L78 Accepts]: Start accepts. Automaton has 11871 states and 37646 transitions. Word has length 161 [2022-03-15 13:58:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:43,930 INFO L470 AbstractCegarLoop]: Abstraction has 11871 states and 37646 transitions. [2022-03-15 13:58:43,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.484375) internal successors, (415), 64 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 11871 states and 37646 transitions. [2022-03-15 13:58:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:43,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:43,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:43,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 13:58:44,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:44,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1279890357, now seen corresponding path program 6 times [2022-03-15 13:58:44,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:44,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567536178] [2022-03-15 13:58:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:45,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:45,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567536178] [2022-03-15 13:58:45,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567536178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:45,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506336133] [2022-03-15 13:58:45,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:58:45,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:45,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:45,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 13:58:45,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 13:58:45,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:45,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-15 13:58:45,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:45,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:45,921 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:58:45,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:58:46,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:58:46,847 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:46,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:58:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:46,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:58:46,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506336133] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:46,875 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:58:46,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [35] total 51 [2022-03-15 13:58:46,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642543327] [2022-03-15 13:58:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:46,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:58:46,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:58:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2409, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 13:58:46,877 INFO L87 Difference]: Start difference. First operand 11871 states and 37646 transitions. Second operand has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:48,080 INFO L93 Difference]: Finished difference Result 16466 states and 52245 transitions. [2022-03-15 13:58:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:58:48,081 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:58:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:48,126 INFO L225 Difference]: With dead ends: 16466 [2022-03-15 13:58:48,126 INFO L226 Difference]: Without dead ends: 14385 [2022-03-15 13:58:48,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=431, Invalid=5269, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:58:48,128 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 911 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 376 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:48,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2999 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1109 Invalid, 0 Unknown, 376 Unchecked, 0.4s Time] [2022-03-15 13:58:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2022-03-15 13:58:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 11729. [2022-03-15 13:58:48,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11729 states, 11728 states have (on average 3.1701909959072307) internal successors, (37180), 11728 states have internal predecessors, (37180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11729 states to 11729 states and 37180 transitions. [2022-03-15 13:58:48,440 INFO L78 Accepts]: Start accepts. Automaton has 11729 states and 37180 transitions. Word has length 161 [2022-03-15 13:58:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:48,441 INFO L470 AbstractCegarLoop]: Abstraction has 11729 states and 37180 transitions. [2022-03-15 13:58:48,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 11729 states and 37180 transitions. [2022-03-15 13:58:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:48,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:48,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:48,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 13:58:48,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:48,687 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash 16013035, now seen corresponding path program 7 times [2022-03-15 13:58:48,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:48,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56457564] [2022-03-15 13:58:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:49,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:49,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56457564] [2022-03-15 13:58:49,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56457564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:49,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973389794] [2022-03-15 13:58:49,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 13:58:49,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:49,554 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:49,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 13:58:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:49,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:58:49,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:50,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 13:58:50,473 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:50,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-15 13:58:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:50,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:58:50,612 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 13:58:50,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 13:58:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:51,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973389794] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:58:51,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:58:51,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 20, 14] total 56 [2022-03-15 13:58:51,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711067052] [2022-03-15 13:58:51,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:58:51,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 13:58:51,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 13:58:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2735, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 13:58:51,141 INFO L87 Difference]: Start difference. First operand 11729 states and 37180 transitions. Second operand has 56 states, 56 states have (on average 6.910714285714286) internal successors, (387), 56 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:55,046 INFO L93 Difference]: Finished difference Result 26814 states and 85287 transitions. [2022-03-15 13:58:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:58:55,046 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 6.910714285714286) internal successors, (387), 56 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:58:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:55,105 INFO L225 Difference]: With dead ends: 26814 [2022-03-15 13:58:55,105 INFO L226 Difference]: Without dead ends: 18967 [2022-03-15 13:58:55,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 298 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2225, Invalid=8281, Unknown=0, NotChecked=0, Total=10506 [2022-03-15 13:58:55,108 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 4828 mSDsluCounter, 5945 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 5330 SdHoareTripleChecker+Invalid, 3403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 574 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:55,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4828 Valid, 5330 Invalid, 3403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2551 Invalid, 0 Unknown, 574 Unchecked, 1.1s Time] [2022-03-15 13:58:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18967 states. [2022-03-15 13:58:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18967 to 13316. [2022-03-15 13:58:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13316 states, 13315 states have (on average 3.137589185129553) internal successors, (41777), 13315 states have internal predecessors, (41777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13316 states to 13316 states and 41777 transitions. [2022-03-15 13:58:55,491 INFO L78 Accepts]: Start accepts. Automaton has 13316 states and 41777 transitions. Word has length 161 [2022-03-15 13:58:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:55,491 INFO L470 AbstractCegarLoop]: Abstraction has 13316 states and 41777 transitions. [2022-03-15 13:58:55,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 6.910714285714286) internal successors, (387), 56 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13316 states and 41777 transitions. [2022-03-15 13:58:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:55,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:55,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:55,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 13:58:55,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:55,720 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 402568537, now seen corresponding path program 8 times [2022-03-15 13:58:55,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:55,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212548814] [2022-03-15 13:58:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:55,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:56,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:56,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212548814] [2022-03-15 13:58:56,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212548814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:56,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199733245] [2022-03-15 13:58:56,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:58:56,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:56,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:56,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:56,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 13:58:56,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 13:58:56,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:56,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-15 13:58:56,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:56,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:56,358 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:58:56,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:58:56,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:58:57,138 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:57,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:58:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:57,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:58:57,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199733245] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:57,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:58:57,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 37 [2022-03-15 13:58:57,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752618102] [2022-03-15 13:58:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:57,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:58:57,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:57,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:58:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:58:57,168 INFO L87 Difference]: Start difference. First operand 13316 states and 41777 transitions. Second operand has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:58,011 INFO L93 Difference]: Finished difference Result 19312 states and 60350 transitions. [2022-03-15 13:58:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 13:58:58,012 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:58:58,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:58,055 INFO L225 Difference]: With dead ends: 19312 [2022-03-15 13:58:58,055 INFO L226 Difference]: Without dead ends: 19293 [2022-03-15 13:58:58,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=322, Invalid=3100, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 13:58:58,056 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 810 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:58,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 2754 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 830 Invalid, 0 Unknown, 374 Unchecked, 0.3s Time] [2022-03-15 13:58:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19293 states. [2022-03-15 13:58:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19293 to 14119. [2022-03-15 13:58:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14119 states, 14118 states have (on average 3.1434339141521463) internal successors, (44379), 14118 states have internal predecessors, (44379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14119 states to 14119 states and 44379 transitions. [2022-03-15 13:58:58,431 INFO L78 Accepts]: Start accepts. Automaton has 14119 states and 44379 transitions. Word has length 161 [2022-03-15 13:58:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:58,431 INFO L470 AbstractCegarLoop]: Abstraction has 14119 states and 44379 transitions. [2022-03-15 13:58:58,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 14119 states and 44379 transitions. [2022-03-15 13:58:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:58:58,463 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:58,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:58,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 13:58:58,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:58,680 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:58:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash 199884667, now seen corresponding path program 9 times [2022-03-15 13:58:58,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:58,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288118616] [2022-03-15 13:58:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:58,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:58:59,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:59,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288118616] [2022-03-15 13:58:59,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288118616] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:59,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983328213] [2022-03-15 13:58:59,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:58:59,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:59,150 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:59,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 13:58:59,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 13:58:59,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:59,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 13:58:59,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:59,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:59,377 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:58:59,378 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:58:59,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:58:59,983 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:59,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:59:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:00,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:59:00,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983328213] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:00,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:59:00,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 37 [2022-03-15 13:59:00,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188181556] [2022-03-15 13:59:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:00,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:59:00,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:59:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:59:00,008 INFO L87 Difference]: Start difference. First operand 14119 states and 44379 transitions. Second operand has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:00,849 INFO L93 Difference]: Finished difference Result 20809 states and 65114 transitions. [2022-03-15 13:59:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:59:00,849 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:59:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:00,907 INFO L225 Difference]: With dead ends: 20809 [2022-03-15 13:59:00,907 INFO L226 Difference]: Without dead ends: 20302 [2022-03-15 13:59:00,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=352, Invalid=3308, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 13:59:00,908 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 792 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:00,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 2771 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 739 Invalid, 0 Unknown, 357 Unchecked, 0.3s Time] [2022-03-15 13:59:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20302 states. [2022-03-15 13:59:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20302 to 16100. [2022-03-15 13:59:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16100 states, 16099 states have (on average 3.1205043791539846) internal successors, (50237), 16099 states have internal predecessors, (50237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16100 states to 16100 states and 50237 transitions. [2022-03-15 13:59:01,401 INFO L78 Accepts]: Start accepts. Automaton has 16100 states and 50237 transitions. Word has length 161 [2022-03-15 13:59:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:01,401 INFO L470 AbstractCegarLoop]: Abstraction has 16100 states and 50237 transitions. [2022-03-15 13:59:01,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 16100 states and 50237 transitions. [2022-03-15 13:59:01,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:01,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:01,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:01,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:01,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-15 13:59:01,647 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:01,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:01,648 INFO L85 PathProgramCache]: Analyzing trace with hash -890742167, now seen corresponding path program 10 times [2022-03-15 13:59:01,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:01,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710585076] [2022-03-15 13:59:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:01,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:02,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:02,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710585076] [2022-03-15 13:59:02,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710585076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:02,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415049021] [2022-03-15 13:59:02,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:59:02,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:02,092 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:02,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 13:59:02,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:59:02,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:02,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:59:02,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:02,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 13:59:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:02,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:02,897 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 13:59:02,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 13:59:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:03,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415049021] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:03,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:03,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 14] total 33 [2022-03-15 13:59:03,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713018747] [2022-03-15 13:59:03,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:03,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:59:03,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:59:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:59:03,338 INFO L87 Difference]: Start difference. First operand 16100 states and 50237 transitions. Second operand has 33 states, 33 states have (on average 8.393939393939394) internal successors, (277), 33 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:04,498 INFO L93 Difference]: Finished difference Result 20852 states and 64146 transitions. [2022-03-15 13:59:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 13:59:04,499 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.393939393939394) internal successors, (277), 33 states have internal predecessors, (277), 0 states have call successors, (0), 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 [2022-03-15 13:59:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:04,558 INFO L225 Difference]: With dead ends: 20852 [2022-03-15 13:59:04,558 INFO L226 Difference]: Without dead ends: 19330 [2022-03-15 13:59:04,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=721, Invalid=2585, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 13:59:04,559 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 1465 mSDsluCounter, 3250 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:04,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 3099 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:59:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19330 states. [2022-03-15 13:59:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19330 to 15385. [2022-03-15 13:59:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15385 states, 15384 states have (on average 3.088988559542382) internal successors, (47521), 15384 states have internal predecessors, (47521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 47521 transitions. [2022-03-15 13:59:04,941 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 47521 transitions. Word has length 161 [2022-03-15 13:59:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:04,942 INFO L470 AbstractCegarLoop]: Abstraction has 15385 states and 47521 transitions. [2022-03-15 13:59:04,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.393939393939394) internal successors, (277), 33 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 47521 transitions. [2022-03-15 13:59:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:05,042 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:05,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:05,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:05,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:05,256 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2076230455, now seen corresponding path program 11 times [2022-03-15 13:59:05,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:05,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295098628] [2022-03-15 13:59:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:05,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:05,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:05,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295098628] [2022-03-15 13:59:05,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295098628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:05,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972876922] [2022-03-15 13:59:05,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:59:05,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:05,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:05,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:05,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 13:59:05,776 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:59:05,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:05,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:59:05,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:06,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 13:59:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:06,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:06,499 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 13:59:06,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 13:59:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:07,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972876922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:07,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:07,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 15] total 35 [2022-03-15 13:59:07,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440167364] [2022-03-15 13:59:07,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:07,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 13:59:07,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:07,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 13:59:07,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 13:59:07,071 INFO L87 Difference]: Start difference. First operand 15385 states and 47521 transitions. Second operand has 35 states, 35 states have (on average 8.028571428571428) internal successors, (281), 35 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:08,422 INFO L93 Difference]: Finished difference Result 20853 states and 63919 transitions. [2022-03-15 13:59:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 13:59:08,423 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.028571428571428) internal successors, (281), 35 states have internal predecessors, (281), 0 states have call successors, (0), 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 [2022-03-15 13:59:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:08,475 INFO L225 Difference]: With dead ends: 20853 [2022-03-15 13:59:08,475 INFO L226 Difference]: Without dead ends: 20003 [2022-03-15 13:59:08,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=909, Invalid=3251, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 13:59:08,476 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1371 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:08,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 3297 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:59:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20003 states. [2022-03-15 13:59:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20003 to 13922. [2022-03-15 13:59:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13922 states, 13921 states have (on average 3.103943682206738) internal successors, (43210), 13921 states have internal predecessors, (43210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13922 states to 13922 states and 43210 transitions. [2022-03-15 13:59:08,842 INFO L78 Accepts]: Start accepts. Automaton has 13922 states and 43210 transitions. Word has length 161 [2022-03-15 13:59:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:08,842 INFO L470 AbstractCegarLoop]: Abstraction has 13922 states and 43210 transitions. [2022-03-15 13:59:08,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.028571428571428) internal successors, (281), 35 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13922 states and 43210 transitions. [2022-03-15 13:59:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:08,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:08,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:08,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:09,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 13:59:09,067 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:09,067 INFO L85 PathProgramCache]: Analyzing trace with hash 72467051, now seen corresponding path program 12 times [2022-03-15 13:59:09,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:09,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721364866] [2022-03-15 13:59:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:09,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:09,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:09,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721364866] [2022-03-15 13:59:09,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721364866] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:09,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285627116] [2022-03-15 13:59:09,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:59:09,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:09,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:09,635 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:09,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 13:59:09,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 13:59:09,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:09,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:59:09,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:09,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-03-15 13:59:09,866 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:59:09,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:59:10,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:59:10,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:10,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:59:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:10,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:59:10,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285627116] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:10,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:59:10,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [27] total 42 [2022-03-15 13:59:10,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59388315] [2022-03-15 13:59:10,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:10,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:10,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1601, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:59:10,519 INFO L87 Difference]: Start difference. First operand 13922 states and 43210 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:11,370 INFO L93 Difference]: Finished difference Result 18827 states and 57752 transitions. [2022-03-15 13:59:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:59:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:59:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:11,413 INFO L225 Difference]: With dead ends: 18827 [2022-03-15 13:59:11,413 INFO L226 Difference]: Without dead ends: 18807 [2022-03-15 13:59:11,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=332, Invalid=3574, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 13:59:11,414 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 708 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:11,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2738 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 682 Invalid, 0 Unknown, 375 Unchecked, 0.3s Time] [2022-03-15 13:59:11,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18807 states. [2022-03-15 13:59:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18807 to 14042. [2022-03-15 13:59:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14042 states, 14041 states have (on average 3.09792749804145) internal successors, (43498), 14041 states have internal predecessors, (43498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14042 states to 14042 states and 43498 transitions. [2022-03-15 13:59:11,820 INFO L78 Accepts]: Start accepts. Automaton has 14042 states and 43498 transitions. Word has length 161 [2022-03-15 13:59:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:11,820 INFO L470 AbstractCegarLoop]: Abstraction has 14042 states and 43498 transitions. [2022-03-15 13:59:11,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 14042 states and 43498 transitions. [2022-03-15 13:59:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:11,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:11,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:11,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:12,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 13:59:12,054 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2048840435, now seen corresponding path program 13 times [2022-03-15 13:59:12,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:12,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908582815] [2022-03-15 13:59:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:12,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:12,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908582815] [2022-03-15 13:59:12,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908582815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:12,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768253635] [2022-03-15 13:59:12,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 13:59:12,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:12,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:12,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:12,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 13:59:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:12,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:59:12,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:13,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 13:59:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:13,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:13,325 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 13:59:13,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 13:59:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:13,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768253635] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:13,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:13,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 15] total 36 [2022-03-15 13:59:13,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898813949] [2022-03-15 13:59:13,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:13,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 13:59:13,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 13:59:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:59:13,810 INFO L87 Difference]: Start difference. First operand 14042 states and 43498 transitions. Second operand has 36 states, 36 states have (on average 7.944444444444445) internal successors, (286), 36 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:15,425 INFO L93 Difference]: Finished difference Result 21089 states and 64098 transitions. [2022-03-15 13:59:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 13:59:15,425 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.944444444444445) internal successors, (286), 36 states have internal predecessors, (286), 0 states have call successors, (0), 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 [2022-03-15 13:59:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:15,470 INFO L225 Difference]: With dead ends: 21089 [2022-03-15 13:59:15,470 INFO L226 Difference]: Without dead ends: 20513 [2022-03-15 13:59:15,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 309 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=945, Invalid=3747, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 13:59:15,471 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1890 mSDsluCounter, 4775 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:15,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 4489 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1598 Invalid, 0 Unknown, 283 Unchecked, 0.6s Time] [2022-03-15 13:59:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20513 states. [2022-03-15 13:59:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20513 to 13900. [2022-03-15 13:59:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13900 states, 13899 states have (on average 3.094251384991726) internal successors, (43007), 13899 states have internal predecessors, (43007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13900 states to 13900 states and 43007 transitions. [2022-03-15 13:59:15,783 INFO L78 Accepts]: Start accepts. Automaton has 13900 states and 43007 transitions. Word has length 161 [2022-03-15 13:59:15,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:15,784 INFO L470 AbstractCegarLoop]: Abstraction has 13900 states and 43007 transitions. [2022-03-15 13:59:15,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.944444444444445) internal successors, (286), 36 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 13900 states and 43007 transitions. [2022-03-15 13:59:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:15,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:15,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:15,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:16,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 13:59:16,008 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1509172719, now seen corresponding path program 14 times [2022-03-15 13:59:16,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:16,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192433069] [2022-03-15 13:59:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:17,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:17,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192433069] [2022-03-15 13:59:17,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192433069] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:17,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368851868] [2022-03-15 13:59:17,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:59:17,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:17,169 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:17,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 13:59:17,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 13:59:17,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:17,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-15 13:59:17,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:17,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:17,402 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:59:17,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:59:17,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:59:18,082 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:18,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:59:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:18,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:59:18,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368851868] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:18,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:59:18,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [34] total 50 [2022-03-15 13:59:18,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667388376] [2022-03-15 13:59:18,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:18,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:18,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:18,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:18,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2285, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 13:59:18,129 INFO L87 Difference]: Start difference. First operand 13900 states and 43007 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:18,939 INFO L93 Difference]: Finished difference Result 19050 states and 58237 transitions. [2022-03-15 13:59:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:59:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:59:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:19,045 INFO L225 Difference]: With dead ends: 19050 [2022-03-15 13:59:19,045 INFO L226 Difference]: Without dead ends: 19005 [2022-03-15 13:59:19,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=376, Invalid=4594, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 13:59:19,046 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 832 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:19,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 2188 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 605 Invalid, 0 Unknown, 295 Unchecked, 0.2s Time] [2022-03-15 13:59:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19005 states. [2022-03-15 13:59:19,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19005 to 13886. [2022-03-15 13:59:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13886 states, 13885 states have (on average 3.0990277277637737) internal successors, (43030), 13885 states have internal predecessors, (43030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13886 states to 13886 states and 43030 transitions. [2022-03-15 13:59:19,341 INFO L78 Accepts]: Start accepts. Automaton has 13886 states and 43030 transitions. Word has length 161 [2022-03-15 13:59:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:19,341 INFO L470 AbstractCegarLoop]: Abstraction has 13886 states and 43030 transitions. [2022-03-15 13:59:19,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 13886 states and 43030 transitions. [2022-03-15 13:59:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:19,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:19,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:19,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:19,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 13:59:19,566 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1290692447, now seen corresponding path program 15 times [2022-03-15 13:59:19,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:19,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980294193] [2022-03-15 13:59:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:19,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:20,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:20,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980294193] [2022-03-15 13:59:20,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980294193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:20,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498252556] [2022-03-15 13:59:20,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:59:20,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:20,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:20,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:20,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 13:59:20,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 13:59:20,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:59:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:20,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:20,430 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:59:20,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:59:20,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:59:21,094 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:21,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:59:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:21,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:59:21,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498252556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:21,152 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:59:21,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [26] total 42 [2022-03-15 13:59:21,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172483412] [2022-03-15 13:59:21,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:21,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:21,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:21,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:21,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:59:21,154 INFO L87 Difference]: Start difference. First operand 13886 states and 43030 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:21,858 INFO L93 Difference]: Finished difference Result 20970 states and 64544 transitions. [2022-03-15 13:59:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:59:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:59:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:21,903 INFO L225 Difference]: With dead ends: 20970 [2022-03-15 13:59:21,903 INFO L226 Difference]: Without dead ends: 20566 [2022-03-15 13:59:21,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=329, Invalid=3577, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 13:59:21,904 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 769 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 509 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:21,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 2593 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 564 Invalid, 0 Unknown, 509 Unchecked, 0.2s Time] [2022-03-15 13:59:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20566 states. [2022-03-15 13:59:22,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20566 to 16428. [2022-03-15 13:59:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16428 states, 16427 states have (on average 3.1125585925610277) internal successors, (51130), 16427 states have internal predecessors, (51130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16428 states to 16428 states and 51130 transitions. [2022-03-15 13:59:22,222 INFO L78 Accepts]: Start accepts. Automaton has 16428 states and 51130 transitions. Word has length 161 [2022-03-15 13:59:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:22,223 INFO L470 AbstractCegarLoop]: Abstraction has 16428 states and 51130 transitions. [2022-03-15 13:59:22,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 16428 states and 51130 transitions. [2022-03-15 13:59:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:22,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:22,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:22,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:22,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:22,511 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash 60753489, now seen corresponding path program 16 times [2022-03-15 13:59:22,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:22,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619434297] [2022-03-15 13:59:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:22,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:23,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:23,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619434297] [2022-03-15 13:59:23,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619434297] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:23,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575881252] [2022-03-15 13:59:23,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:59:23,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:23,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:23,452 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:23,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 13:59:23,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:59:23,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:23,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:59:23,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:24,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 13:59:24,423 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:24,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-15 13:59:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:24,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:24,604 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 13:59:24,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 13:59:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:25,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575881252] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:25,143 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:25,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 15] total 59 [2022-03-15 13:59:25,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944958835] [2022-03-15 13:59:25,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:25,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-15 13:59:25,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-15 13:59:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=3072, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 13:59:25,145 INFO L87 Difference]: Start difference. First operand 16428 states and 51130 transitions. Second operand has 59 states, 59 states have (on average 6.677966101694915) internal successors, (394), 59 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:34,642 INFO L93 Difference]: Finished difference Result 26233 states and 81015 transitions. [2022-03-15 13:59:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-15 13:59:34,642 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.677966101694915) internal successors, (394), 59 states have internal predecessors, (394), 0 states have call successors, (0), 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 [2022-03-15 13:59:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:34,698 INFO L225 Difference]: With dead ends: 26233 [2022-03-15 13:59:34,698 INFO L226 Difference]: Without dead ends: 25156 [2022-03-15 13:59:34,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 307 SyntacticMatches, 20 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5941 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=3765, Invalid=17405, Unknown=0, NotChecked=0, Total=21170 [2022-03-15 13:59:34,699 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 3247 mSDsluCounter, 9591 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3247 SdHoareTripleChecker+Valid, 8364 SdHoareTripleChecker+Invalid, 6156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1643 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:34,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3247 Valid, 8364 Invalid, 6156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 4284 Invalid, 0 Unknown, 1643 Unchecked, 1.7s Time] [2022-03-15 13:59:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25156 states. [2022-03-15 13:59:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25156 to 17061. [2022-03-15 13:59:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17061 states, 17060 states have (on average 3.101641266119578) internal successors, (52914), 17060 states have internal predecessors, (52914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17061 states to 17061 states and 52914 transitions. [2022-03-15 13:59:35,038 INFO L78 Accepts]: Start accepts. Automaton has 17061 states and 52914 transitions. Word has length 161 [2022-03-15 13:59:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:35,038 INFO L470 AbstractCegarLoop]: Abstraction has 17061 states and 52914 transitions. [2022-03-15 13:59:35,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.677966101694915) internal successors, (394), 59 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 17061 states and 52914 transitions. [2022-03-15 13:59:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:35,066 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:35,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:35,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:35,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 13:59:35,267 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash -512265493, now seen corresponding path program 17 times [2022-03-15 13:59:35,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:35,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114676336] [2022-03-15 13:59:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:35,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:35,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114676336] [2022-03-15 13:59:35,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114676336] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:35,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109234295] [2022-03-15 13:59:35,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:59:35,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:35,629 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:35,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 13:59:35,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:59:35,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:35,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 13:59:35,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:36,829 INFO L353 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-03-15 13:59:36,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-03-15 13:59:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:36,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:37,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:37,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-03-15 13:59:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:38,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109234295] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:38,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:38,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 20] total 48 [2022-03-15 13:59:38,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699923052] [2022-03-15 13:59:38,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:38,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 13:59:38,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:38,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 13:59:38,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1986, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:59:38,073 INFO L87 Difference]: Start difference. First operand 17061 states and 52914 transitions. Second operand has 48 states, 48 states have (on average 7.0625) internal successors, (339), 48 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:41,528 INFO L93 Difference]: Finished difference Result 27717 states and 84378 transitions. [2022-03-15 13:59:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-15 13:59:41,528 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.0625) internal successors, (339), 48 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:59:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:41,594 INFO L225 Difference]: With dead ends: 27717 [2022-03-15 13:59:41,594 INFO L226 Difference]: Without dead ends: 27693 [2022-03-15 13:59:41,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 305 SyntacticMatches, 22 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1623, Invalid=8883, Unknown=0, NotChecked=0, Total=10506 [2022-03-15 13:59:41,596 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 3309 mSDsluCounter, 6638 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 5488 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1514 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:41,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3309 Valid, 5488 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2485 Invalid, 0 Unknown, 1514 Unchecked, 0.9s Time] [2022-03-15 13:59:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27693 states. [2022-03-15 13:59:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27693 to 18049. [2022-03-15 13:59:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18049 states, 18048 states have (on average 3.1070478723404253) internal successors, (56076), 18048 states have internal predecessors, (56076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18049 states to 18049 states and 56076 transitions. [2022-03-15 13:59:42,083 INFO L78 Accepts]: Start accepts. Automaton has 18049 states and 56076 transitions. Word has length 161 [2022-03-15 13:59:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:42,084 INFO L470 AbstractCegarLoop]: Abstraction has 18049 states and 56076 transitions. [2022-03-15 13:59:42,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.0625) internal successors, (339), 48 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 18049 states and 56076 transitions. [2022-03-15 13:59:42,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:42,112 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:42,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:42,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:42,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:42,313 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1566907499, now seen corresponding path program 18 times [2022-03-15 13:59:42,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:42,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776354881] [2022-03-15 13:59:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:42,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:43,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:43,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776354881] [2022-03-15 13:59:43,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776354881] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:43,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653611510] [2022-03-15 13:59:43,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:59:43,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:43,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:43,418 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:43,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 13:59:43,538 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 13:59:43,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:43,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 13:59:43,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:43,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:43,666 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:59:43,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:59:44,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:59:44,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:44,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 13:59:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:44,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:59:44,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653611510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:44,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:59:44,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [33] total 48 [2022-03-15 13:59:44,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804568854] [2022-03-15 13:59:44,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:44,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:44,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2106, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:59:44,416 INFO L87 Difference]: Start difference. First operand 18049 states and 56076 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:45,426 INFO L93 Difference]: Finished difference Result 22847 states and 70057 transitions. [2022-03-15 13:59:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:59:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:59:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:45,482 INFO L225 Difference]: With dead ends: 22847 [2022-03-15 13:59:45,482 INFO L226 Difference]: Without dead ends: 22767 [2022-03-15 13:59:45,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=361, Invalid=4331, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 13:59:45,483 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 766 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:45,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2183 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 578 Invalid, 0 Unknown, 151 Unchecked, 0.3s Time] [2022-03-15 13:59:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22767 states. [2022-03-15 13:59:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22767 to 18069. [2022-03-15 13:59:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18069 states, 18068 states have (on average 3.104992251494355) internal successors, (56101), 18068 states have internal predecessors, (56101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18069 states to 18069 states and 56101 transitions. [2022-03-15 13:59:45,895 INFO L78 Accepts]: Start accepts. Automaton has 18069 states and 56101 transitions. Word has length 161 [2022-03-15 13:59:45,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:45,895 INFO L470 AbstractCegarLoop]: Abstraction has 18069 states and 56101 transitions. [2022-03-15 13:59:45,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 18069 states and 56101 transitions. [2022-03-15 13:59:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:59:45,926 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:45,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:45,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-15 13:59:46,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:46,127 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 13:59:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash -802841139, now seen corresponding path program 19 times [2022-03-15 13:59:46,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:46,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416735783] [2022-03-15 13:59:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:46,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:46,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416735783] [2022-03-15 13:59:46,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416735783] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:46,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877901282] [2022-03-15 13:59:46,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 13:59:46,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:46,459 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:46,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 13:59:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-15 13:59:46,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:47,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 13:59:47,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:47,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:48,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:48,575 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-15 13:59:48,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-03-15 13:59:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:48,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:52,753 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:52,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 130 [2022-03-15 13:59:52,767 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:52,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 1424 treesize of output 1348 [2022-03-15 13:59:52,795 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:52,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 1580 treesize of output 1174 [2022-03-15 13:59:52,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:52,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 1148 treesize of output 958 [2022-03-15 13:59:52,855 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:52,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 932 treesize of output 850 [2022-03-15 14:00:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:00:19,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877901282] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:00:19,954 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:00:19,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 31, 27] total 70 [2022-03-15 14:00:19,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756740593] [2022-03-15 14:00:19,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:00:19,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-15 14:00:19,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:19,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-15 14:00:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=4129, Unknown=208, NotChecked=0, Total=4830 [2022-03-15 14:00:19,956 INFO L87 Difference]: Start difference. First operand 18069 states and 56101 transitions. Second operand has 70 states, 70 states have (on average 5.557142857142857) internal successors, (389), 70 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:42,904 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~f~0.offset (* c_~j~0 4)))) (let ((.cse0 (select (select |c_#memory_int| c_~f~0.base) .cse3))) (let ((.cse1 (<= c_~n~0 0)) (.cse2 (<= c_~n~0 1)) (.cse4 (= .cse0 c_~i~0))) (and (= c_~f~0.offset 0) (= c_~i~0 0) (or (<= c_~n~0 (+ .cse0 1)) .cse1) .cse2 (or .cse1 (<= .cse0 0)) (or .cse2 (<= .cse3 0)) .cse4 (or .cse4 (not (= .cse3 0))) (forall ((v_ArrVal_650 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_650) c_~f~0.base))) (let ((.cse5 (select .cse7 (+ c_~f~0.offset (* c_~j~0 4))))) (or (< .cse5 0) (let ((.cse6 (select .cse7 (+ (* 4 .cse5) c_~f~0.offset)))) (and (<= .cse6 0) (<= c_~n~0 (+ .cse6 1)))) (<= c_~n~0 .cse5))))) (exists ((v_~j~0_76 Int)) (and (<= 0 v_~j~0_76) (< v_~j~0_76 c_~n~0) (= (select (select |c_#memory_int| c_~f~0.base) (+ c_~f~0.offset (* v_~j~0_76 4))) c_~j~0))))))) is different from false [2022-03-15 14:00:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:48,603 INFO L93 Difference]: Finished difference Result 39490 states and 115818 transitions. [2022-03-15 14:00:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-03-15 14:00:48,603 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.557142857142857) internal successors, (389), 70 states have internal predecessors, (389), 0 states have call successors, (0), 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 [2022-03-15 14:00:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:48,687 INFO L225 Difference]: With dead ends: 39490 [2022-03-15 14:00:48,687 INFO L226 Difference]: Without dead ends: 36101 [2022-03-15 14:00:48,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 350 SyntacticMatches, 183 SemanticMatches, 295 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 58811 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=13406, Invalid=73654, Unknown=264, NotChecked=588, Total=87912 [2022-03-15 14:00:48,695 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 7907 mSDsluCounter, 12835 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7907 SdHoareTripleChecker+Valid, 10505 SdHoareTripleChecker+Invalid, 9737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4997 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:48,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7907 Valid, 10505 Invalid, 9737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 4319 Invalid, 0 Unknown, 4997 Unchecked, 2.0s Time] [2022-03-15 14:00:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36101 states. [2022-03-15 14:00:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36101 to 20935. [2022-03-15 14:00:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20935 states, 20934 states have (on average 3.056558708321391) internal successors, (63986), 20934 states have internal predecessors, (63986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20935 states to 20935 states and 63986 transitions. [2022-03-15 14:00:49,267 INFO L78 Accepts]: Start accepts. Automaton has 20935 states and 63986 transitions. Word has length 161 [2022-03-15 14:00:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:49,267 INFO L470 AbstractCegarLoop]: Abstraction has 20935 states and 63986 transitions. [2022-03-15 14:00:49,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.557142857142857) internal successors, (389), 70 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 20935 states and 63986 transitions. [2022-03-15 14:00:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:00:49,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:49,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:49,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-15 14:00:49,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:49,508 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:00:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1344296303, now seen corresponding path program 20 times [2022-03-15 14:00:49,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:49,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262709035] [2022-03-15 14:00:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:49,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:00:50,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:50,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262709035] [2022-03-15 14:00:50,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262709035] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:00:50,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602546315] [2022-03-15 14:00:50,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:00:50,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:50,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:00:50,692 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:00:50,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 14:00:50,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:00:50,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:00:50,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 14:00:50,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:00:50,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:50,908 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:00:50,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:00:51,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:00:51,583 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:00:51,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:00:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:00:51,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:00:51,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602546315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:51,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:00:51,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [32] total 49 [2022-03-15 14:00:51,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143447475] [2022-03-15 14:00:51,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:51,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:51,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2197, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:00:51,642 INFO L87 Difference]: Start difference. First operand 20935 states and 63986 transitions. Second operand has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:52,757 INFO L93 Difference]: Finished difference Result 26049 states and 78569 transitions. [2022-03-15 14:00:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:00:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:00:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:52,814 INFO L225 Difference]: With dead ends: 26049 [2022-03-15 14:00:52,815 INFO L226 Difference]: Without dead ends: 25929 [2022-03-15 14:00:52,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=413, Invalid=4843, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 14:00:52,816 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 827 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:52,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2968 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1049 Invalid, 0 Unknown, 156 Unchecked, 0.4s Time] [2022-03-15 14:00:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25929 states. [2022-03-15 14:00:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25929 to 20963. [2022-03-15 14:00:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20963 states, 20962 states have (on average 3.0550042934834463) internal successors, (64039), 20962 states have internal predecessors, (64039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20963 states to 20963 states and 64039 transitions. [2022-03-15 14:00:53,307 INFO L78 Accepts]: Start accepts. Automaton has 20963 states and 64039 transitions. Word has length 161 [2022-03-15 14:00:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:53,307 INFO L470 AbstractCegarLoop]: Abstraction has 20963 states and 64039 transitions. [2022-03-15 14:00:53,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 20963 states and 64039 transitions. [2022-03-15 14:00:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:00:53,340 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:53,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:53,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 14:00:53,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:53,541 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:00:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 592918573, now seen corresponding path program 21 times [2022-03-15 14:00:53,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:53,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085815505] [2022-03-15 14:00:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:00:54,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:54,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085815505] [2022-03-15 14:00:54,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085815505] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:00:54,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145757745] [2022-03-15 14:00:54,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:00:54,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:54,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:00:54,136 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:00:54,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 14:00:54,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:00:54,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:00:54,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 14:00:54,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:00:54,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:54,351 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:00:54,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:00:54,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:00:54,907 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:00:54,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:00:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:00:54,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:00:54,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145757745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:54,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:00:54,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [27] total 42 [2022-03-15 14:00:54,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808356212] [2022-03-15 14:00:54,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:54,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:54,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:54,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:00:54,938 INFO L87 Difference]: Start difference. First operand 20963 states and 64039 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:55,737 INFO L93 Difference]: Finished difference Result 26732 states and 80453 transitions. [2022-03-15 14:00:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:00:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:00:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:55,796 INFO L225 Difference]: With dead ends: 26732 [2022-03-15 14:00:55,797 INFO L226 Difference]: Without dead ends: 24694 [2022-03-15 14:00:55,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=363, Invalid=3543, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 14:00:55,798 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 867 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 460 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:55,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 2538 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 716 Invalid, 0 Unknown, 460 Unchecked, 0.3s Time] [2022-03-15 14:00:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24694 states. [2022-03-15 14:00:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24694 to 18923. [2022-03-15 14:00:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18923 states, 18922 states have (on average 3.0764189831941655) internal successors, (58212), 18922 states have internal predecessors, (58212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18923 states to 18923 states and 58212 transitions. [2022-03-15 14:00:56,347 INFO L78 Accepts]: Start accepts. Automaton has 18923 states and 58212 transitions. Word has length 161 [2022-03-15 14:00:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:56,347 INFO L470 AbstractCegarLoop]: Abstraction has 18923 states and 58212 transitions. [2022-03-15 14:00:56,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 18923 states and 58212 transitions. [2022-03-15 14:00:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:00:56,378 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:56,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:56,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-15 14:00:56,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-15 14:00:56,579 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:00:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash 685676083, now seen corresponding path program 22 times [2022-03-15 14:00:56,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:56,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820415654] [2022-03-15 14:00:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:00:57,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:57,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820415654] [2022-03-15 14:00:57,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820415654] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:00:57,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624498725] [2022-03-15 14:00:57,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:00:57,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:57,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:00:57,064 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:00:57,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 14:00:57,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:00:57,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:00:57,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 14:00:57,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:00:57,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:00:58,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:58,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:58,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:58,569 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-15 14:00:58,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-15 14:00:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:00:58,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:01:01,982 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:01,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2022-03-15 14:01:01,990 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:01:01,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 398 treesize of output 373 [2022-03-15 14:01:01,997 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 14:01:01,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 366 treesize of output 270 [2022-03-15 14:01:02,009 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 14:01:02,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 222 [2022-03-15 14:01:02,017 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 14:01:02,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 98 [2022-03-15 14:01:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:02,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624498725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:01:02,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:01:02,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 22] total 59 [2022-03-15 14:01:02,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860694692] [2022-03-15 14:01:02,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:01:02,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-15 14:01:02,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-15 14:01:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=2918, Unknown=134, NotChecked=0, Total=3422 [2022-03-15 14:01:02,330 INFO L87 Difference]: Start difference. First operand 18923 states and 58212 transitions. Second operand has 59 states, 59 states have (on average 6.5423728813559325) internal successors, (386), 59 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:05,842 INFO L93 Difference]: Finished difference Result 25287 states and 76894 transitions. [2022-03-15 14:01:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:01:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.5423728813559325) internal successors, (386), 59 states have internal predecessors, (386), 0 states have call successors, (0), 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 [2022-03-15 14:01:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:05,895 INFO L225 Difference]: With dead ends: 25287 [2022-03-15 14:01:05,895 INFO L226 Difference]: Without dead ends: 25160 [2022-03-15 14:01:05,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 289 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1606, Invalid=6816, Unknown=134, NotChecked=0, Total=8556 [2022-03-15 14:01:05,896 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 2467 mSDsluCounter, 6092 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1076 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:05,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 5512 Invalid, 3337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2229 Invalid, 0 Unknown, 1076 Unchecked, 0.8s Time] [2022-03-15 14:01:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25160 states. [2022-03-15 14:01:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25160 to 19018. [2022-03-15 14:01:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19018 states, 19017 states have (on average 3.0690960719356366) internal successors, (58365), 19017 states have internal predecessors, (58365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19018 states to 19018 states and 58365 transitions. [2022-03-15 14:01:06,255 INFO L78 Accepts]: Start accepts. Automaton has 19018 states and 58365 transitions. Word has length 161 [2022-03-15 14:01:06,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:06,255 INFO L470 AbstractCegarLoop]: Abstraction has 19018 states and 58365 transitions. [2022-03-15 14:01:06,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.5423728813559325) internal successors, (386), 59 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 19018 states and 58365 transitions. [2022-03-15 14:01:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:01:06,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:06,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:06,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-03-15 14:01:06,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-03-15 14:01:06,486 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:01:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1594751727, now seen corresponding path program 23 times [2022-03-15 14:01:06,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:06,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650111457] [2022-03-15 14:01:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:07,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:07,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650111457] [2022-03-15 14:01:07,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650111457] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:07,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619653401] [2022-03-15 14:01:07,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:01:07,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:07,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:07,095 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:07,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 14:01:07,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:01:07,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:07,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-15 14:01:07,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:07,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:07,383 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:01:07,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:01:08,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-15 14:01:08,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 14:01:08,845 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:08,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 14:01:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:08,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:01:09,559 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:09,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 72 [2022-03-15 14:01:09,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-03-15 14:01:09,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-03-15 14:01:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:11,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619653401] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:01:11,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:01:11,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 70 [2022-03-15 14:01:11,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241685311] [2022-03-15 14:01:11,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:01:11,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-15 14:01:11,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-15 14:01:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=4548, Unknown=8, NotChecked=0, Total=4830 [2022-03-15 14:01:11,137 INFO L87 Difference]: Start difference. First operand 19018 states and 58365 transitions. Second operand has 70 states, 70 states have (on average 5.928571428571429) internal successors, (415), 70 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:24,519 INFO L93 Difference]: Finished difference Result 31490 states and 92740 transitions. [2022-03-15 14:01:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-15 14:01:24,519 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.928571428571429) internal successors, (415), 70 states have internal predecessors, (415), 0 states have call successors, (0), 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 [2022-03-15 14:01:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:24,583 INFO L225 Difference]: With dead ends: 31490 [2022-03-15 14:01:24,584 INFO L226 Difference]: Without dead ends: 31177 [2022-03-15 14:01:24,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 307 SyntacticMatches, 86 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 16807 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=4119, Invalid=27009, Unknown=24, NotChecked=0, Total=31152 [2022-03-15 14:01:24,586 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 5600 mSDsluCounter, 11012 mSDsCounter, 0 mSdLazyCounter, 3329 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5600 SdHoareTripleChecker+Valid, 9553 SdHoareTripleChecker+Invalid, 6758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 3329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3021 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:24,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5600 Valid, 9553 Invalid, 6758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 3329 Invalid, 0 Unknown, 3021 Unchecked, 1.4s Time] [2022-03-15 14:01:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31177 states. [2022-03-15 14:01:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31177 to 20834. [2022-03-15 14:01:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20834 states, 20833 states have (on average 3.0575529208467334) internal successors, (63698), 20833 states have internal predecessors, (63698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20834 states to 20834 states and 63698 transitions. [2022-03-15 14:01:25,060 INFO L78 Accepts]: Start accepts. Automaton has 20834 states and 63698 transitions. Word has length 161 [2022-03-15 14:01:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:25,060 INFO L470 AbstractCegarLoop]: Abstraction has 20834 states and 63698 transitions. [2022-03-15 14:01:25,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.928571428571429) internal successors, (415), 70 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 20834 states and 63698 transitions. [2022-03-15 14:01:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:01:25,093 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:25,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:25,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 14:01:25,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:25,294 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:01:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:25,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1832399283, now seen corresponding path program 24 times [2022-03-15 14:01:25,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:25,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311651381] [2022-03-15 14:01:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:25,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:25,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:25,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311651381] [2022-03-15 14:01:25,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311651381] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:25,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981701753] [2022-03-15 14:01:25,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:01:25,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:25,628 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:25,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 14:01:25,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 14:01:25,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:25,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-15 14:01:25,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:25,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:25,896 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:01:25,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:01:26,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:01:26,514 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:26,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:01:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:01:26,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:01:26,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981701753] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:26,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:01:26,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 37 [2022-03-15 14:01:26,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263506658] [2022-03-15 14:01:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:26,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:26,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1238, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:26,537 INFO L87 Difference]: Start difference. First operand 20834 states and 63698 transitions. Second operand has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:27,403 INFO L93 Difference]: Finished difference Result 26197 states and 79292 transitions. [2022-03-15 14:01:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:01:27,403 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:01:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:27,479 INFO L225 Difference]: With dead ends: 26197 [2022-03-15 14:01:27,480 INFO L226 Difference]: Without dead ends: 26146 [2022-03-15 14:01:27,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=321, Invalid=3101, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:01:27,481 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 743 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 406 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:27,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 3004 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 877 Invalid, 0 Unknown, 406 Unchecked, 0.3s Time] [2022-03-15 14:01:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26146 states. [2022-03-15 14:01:27,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26146 to 20936. [2022-03-15 14:01:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20936 states, 20935 states have (on average 3.0533556245521853) internal successors, (63922), 20935 states have internal predecessors, (63922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20936 states to 20936 states and 63922 transitions. [2022-03-15 14:01:28,290 INFO L78 Accepts]: Start accepts. Automaton has 20936 states and 63922 transitions. Word has length 161 [2022-03-15 14:01:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:28,290 INFO L470 AbstractCegarLoop]: Abstraction has 20936 states and 63922 transitions. [2022-03-15 14:01:28,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.666666666666667) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 20936 states and 63922 transitions. [2022-03-15 14:01:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:01:28,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:28,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:28,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 14:01:28,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:28,524 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:01:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2142369523, now seen corresponding path program 25 times [2022-03-15 14:01:28,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:28,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340831983] [2022-03-15 14:01:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:28,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:28,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340831983] [2022-03-15 14:01:28,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340831983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:28,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927997965] [2022-03-15 14:01:28,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:01:28,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:28,920 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:28,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 14:01:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:29,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 14:01:29,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:29,575 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:01:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:29,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:01:29,692 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:01:29,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 14:01:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:30,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927997965] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:01:30,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:01:30,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 15] total 36 [2022-03-15 14:01:30,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355043933] [2022-03-15 14:01:30,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:01:30,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 14:01:30,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 14:01:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:01:30,126 INFO L87 Difference]: Start difference. First operand 20936 states and 63922 transitions. Second operand has 36 states, 36 states have (on average 7.555555555555555) internal successors, (272), 36 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:31,594 INFO L93 Difference]: Finished difference Result 26174 states and 79735 transitions. [2022-03-15 14:01:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:01:31,594 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.555555555555555) internal successors, (272), 36 states have internal predecessors, (272), 0 states have call successors, (0), 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 [2022-03-15 14:01:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:31,702 INFO L225 Difference]: With dead ends: 26174 [2022-03-15 14:01:31,702 INFO L226 Difference]: Without dead ends: 25567 [2022-03-15 14:01:31,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 309 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=815, Invalid=3475, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 14:01:31,703 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1355 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:31,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 4304 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1488 Invalid, 0 Unknown, 411 Unchecked, 0.6s Time] [2022-03-15 14:01:31,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25567 states. [2022-03-15 14:01:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25567 to 19757. [2022-03-15 14:01:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19757 states, 19756 states have (on average 3.0686879935209554) internal successors, (60625), 19756 states have internal predecessors, (60625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19757 states to 19757 states and 60625 transitions. [2022-03-15 14:01:32,180 INFO L78 Accepts]: Start accepts. Automaton has 19757 states and 60625 transitions. Word has length 161 [2022-03-15 14:01:32,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:32,180 INFO L470 AbstractCegarLoop]: Abstraction has 19757 states and 60625 transitions. [2022-03-15 14:01:32,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.555555555555555) internal successors, (272), 36 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 19757 states and 60625 transitions. [2022-03-15 14:01:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:01:32,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:32,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:32,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 14:01:32,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 14:01:32,413 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:01:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash -196031397, now seen corresponding path program 26 times [2022-03-15 14:01:32,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:32,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612263513] [2022-03-15 14:01:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:32,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:32,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612263513] [2022-03-15 14:01:32,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612263513] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:32,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239818555] [2022-03-15 14:01:32,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:01:32,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:32,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:32,987 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:32,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 14:01:33,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:01:33,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:33,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-15 14:01:33,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:33,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:33,207 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:01:33,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:01:33,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:01:34,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:34,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:01:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:01:34,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:01:34,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239818555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:34,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:01:34,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [26] total 44 [2022-03-15 14:01:34,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220760225] [2022-03-15 14:01:34,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:34,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:01:34,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:01:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1770, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:01:34,052 INFO L87 Difference]: Start difference. First operand 19757 states and 60625 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:34,956 INFO L93 Difference]: Finished difference Result 23818 states and 72738 transitions. [2022-03-15 14:01:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:01:34,956 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:01:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:35,012 INFO L225 Difference]: With dead ends: 23818 [2022-03-15 14:01:35,012 INFO L226 Difference]: Without dead ends: 23724 [2022-03-15 14:01:35,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=341, Invalid=3949, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 14:01:35,013 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 805 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 642 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:35,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 2824 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 796 Invalid, 0 Unknown, 642 Unchecked, 0.3s Time] [2022-03-15 14:01:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23724 states. [2022-03-15 14:01:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23724 to 20281. [2022-03-15 14:01:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20281 states, 20280 states have (on average 3.0692800788954635) internal successors, (62245), 20280 states have internal predecessors, (62245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20281 states to 20281 states and 62245 transitions. [2022-03-15 14:01:35,476 INFO L78 Accepts]: Start accepts. Automaton has 20281 states and 62245 transitions. Word has length 161 [2022-03-15 14:01:35,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:35,476 INFO L470 AbstractCegarLoop]: Abstraction has 20281 states and 62245 transitions. [2022-03-15 14:01:35,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 20281 states and 62245 transitions. [2022-03-15 14:01:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:01:35,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:35,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:35,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 14:01:35,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 14:01:35,712 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:01:35,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1252712583, now seen corresponding path program 27 times [2022-03-15 14:01:35,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:35,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818190578] [2022-03-15 14:01:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:35,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:36,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:36,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818190578] [2022-03-15 14:01:36,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818190578] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:36,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038686641] [2022-03-15 14:01:36,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:01:36,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:36,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:36,475 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:36,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 14:01:36,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:01:36,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:36,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-15 14:01:36,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:36,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:36,732 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:01:36,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:01:37,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:01:37,562 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:37,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:01:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:01:37,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:01:37,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038686641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:37,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:01:37,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [28] total 47 [2022-03-15 14:01:37,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113056142] [2022-03-15 14:01:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:37,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 14:01:37,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 14:01:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2024, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:01:37,610 INFO L87 Difference]: Start difference. First operand 20281 states and 62245 transitions. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:38,680 INFO L93 Difference]: Finished difference Result 23984 states and 73154 transitions. [2022-03-15 14:01:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:01:38,680 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:01:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:38,731 INFO L225 Difference]: With dead ends: 23984 [2022-03-15 14:01:38,732 INFO L226 Difference]: Without dead ends: 23958 [2022-03-15 14:01:38,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=381, Invalid=4449, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 14:01:38,732 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 897 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:38,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 3143 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 914 Invalid, 0 Unknown, 402 Unchecked, 0.4s Time] [2022-03-15 14:01:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23958 states. [2022-03-15 14:01:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23958 to 20343. [2022-03-15 14:01:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20343 states, 20342 states have (on average 3.067741618326615) internal successors, (62404), 20342 states have internal predecessors, (62404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20343 states to 20343 states and 62404 transitions. [2022-03-15 14:01:39,247 INFO L78 Accepts]: Start accepts. Automaton has 20343 states and 62404 transitions. Word has length 161 [2022-03-15 14:01:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:39,247 INFO L470 AbstractCegarLoop]: Abstraction has 20343 states and 62404 transitions. [2022-03-15 14:01:39,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 20343 states and 62404 transitions. [2022-03-15 14:01:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:01:39,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:39,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:39,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-15 14:01:39,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 14:01:39,482 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:01:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash 531817245, now seen corresponding path program 28 times [2022-03-15 14:01:39,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:39,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721017934] [2022-03-15 14:01:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:39,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:39,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:39,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721017934] [2022-03-15 14:01:39,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721017934] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:39,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705193323] [2022-03-15 14:01:39,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:01:39,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:39,938 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:39,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 14:01:40,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:01:40,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:40,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-15 14:01:40,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:40,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:01:41,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:41,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:41,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:41,991 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-15 14:01:41,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-03-15 14:01:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:42,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:01:45,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:45,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 130 [2022-03-15 14:01:45,840 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:45,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 692 treesize of output 664 [2022-03-15 14:01:45,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:45,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 622 treesize of output 594 [2022-03-15 14:01:45,873 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:45,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 716 treesize of output 526 [2022-03-15 14:01:45,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:01:45,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 500 treesize of output 418 [2022-03-15 14:01:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:47,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705193323] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:01:47,012 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:01:47,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 31, 27] total 70 [2022-03-15 14:01:47,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95007734] [2022-03-15 14:01:47,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:01:47,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-15 14:01:47,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-15 14:01:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=4147, Unknown=190, NotChecked=0, Total=4830 [2022-03-15 14:01:47,013 INFO L87 Difference]: Start difference. First operand 20343 states and 62404 transitions. Second operand has 70 states, 70 states have (on average 5.614285714285714) internal successors, (393), 70 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) [2022-03-15 14:01:56,520 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (<= c_~n~0 0)) (.cse4 (select (select |c_#memory_int| c_~f~0.base) (+ c_~f~0.offset (* c_~j~0 4)))) (.cse3 (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1))) (and (= c_~f~0.offset 0) (exists ((v_~j~0_100 Int)) (and (= c_~j~0 (select (select |c_#memory_int| c_~f~0.base) (+ (* v_~j~0_100 4) c_~f~0.offset))) (< v_~j~0_100 c_~n~0) (<= 0 v_~j~0_100))) (forall ((v_ArrVal_961 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_961) c_~f~0.base))) (let ((.cse0 (select .cse2 (+ c_~f~0.offset (* c_~j~0 4))))) (or (< .cse0 0) (let ((.cse1 (select .cse2 (+ c_~f~0.offset (* 4 .cse0))))) (and (<= .cse1 0) (<= c_~n~0 (+ .cse1 1)))) (<= c_~n~0 .cse0))))) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (< .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base|) (<= c_~n~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (or (<= c_~n~0 (+ .cse4 1)) .cse5) (< .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t3~0#1.base|) (<= c_~n~0 1) (or .cse5 (<= .cse4 0)) (<= c_~n~0 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< .cse3 |c_ULTIMATE.start_main_~#t2~0#1.base|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false [2022-03-15 14:01:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:59,484 INFO L93 Difference]: Finished difference Result 35662 states and 107033 transitions. [2022-03-15 14:01:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-15 14:01:59,484 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.614285714285714) internal successors, (393), 70 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 161 [2022-03-15 14:01:59,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:59,577 INFO L225 Difference]: With dead ends: 35662 [2022-03-15 14:01:59,577 INFO L226 Difference]: Without dead ends: 33140 [2022-03-15 14:01:59,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 307 SyntacticMatches, 44 SemanticMatches, 167 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 9766 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=4810, Invalid=23001, Unknown=249, NotChecked=332, Total=28392 [2022-03-15 14:01:59,580 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 6414 mSDsluCounter, 12389 mSDsCounter, 0 mSdLazyCounter, 3306 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 9544 SdHoareTripleChecker+Invalid, 10720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7137 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:59,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6414 Valid, 9544 Invalid, 10720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3306 Invalid, 0 Unknown, 7137 Unchecked, 1.5s Time] [2022-03-15 14:01:59,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33140 states. [2022-03-15 14:02:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33140 to 19415. [2022-03-15 14:02:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19415 states, 19414 states have (on average 3.0703100855053056) internal successors, (59607), 19414 states have internal predecessors, (59607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19415 states to 19415 states and 59607 transitions. [2022-03-15 14:02:00,103 INFO L78 Accepts]: Start accepts. Automaton has 19415 states and 59607 transitions. Word has length 161 [2022-03-15 14:02:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:00,104 INFO L470 AbstractCegarLoop]: Abstraction has 19415 states and 59607 transitions. [2022-03-15 14:02:00,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.614285714285714) internal successors, (393), 70 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) [2022-03-15 14:02:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 19415 states and 59607 transitions. [2022-03-15 14:02:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:02:00,137 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:00,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:00,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-15 14:02:00,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:00,338 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:02:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash -767760071, now seen corresponding path program 29 times [2022-03-15 14:02:00,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:00,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001547110] [2022-03-15 14:02:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:00,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:00,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:00,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001547110] [2022-03-15 14:02:00,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001547110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:00,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091942270] [2022-03-15 14:02:00,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:02:00,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:00,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:00,688 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:00,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 14:02:00,841 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:02:00,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:00,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-15 14:02:00,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:00,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:01,015 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:02:01,016 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:02:02,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:02,437 INFO L353 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-03-15 14:02:02,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-03-15 14:02:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:02,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:02,880 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:02,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 124 [2022-03-15 14:02:02,892 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:02,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 72 [2022-03-15 14:02:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:03,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091942270] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:02:03,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:02:03,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 22] total 62 [2022-03-15 14:02:03,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950854661] [2022-03-15 14:02:03,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:02:03,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-15 14:02:03,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-15 14:02:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=3340, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:02:03,918 INFO L87 Difference]: Start difference. First operand 19415 states and 59607 transitions. Second operand has 62 states, 62 states have (on average 6.306451612903226) internal successors, (391), 62 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:13,315 INFO L93 Difference]: Finished difference Result 50164 states and 150863 transitions. [2022-03-15 14:02:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-03-15 14:02:13,315 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.306451612903226) internal successors, (391), 62 states have internal predecessors, (391), 0 states have call successors, (0), 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 [2022-03-15 14:02:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:13,522 INFO L225 Difference]: With dead ends: 50164 [2022-03-15 14:02:13,522 INFO L226 Difference]: Without dead ends: 41482 [2022-03-15 14:02:13,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 306 SyntacticMatches, 46 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 19316 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=5841, Invalid=38049, Unknown=0, NotChecked=0, Total=43890 [2022-03-15 14:02:13,524 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 5233 mSDsluCounter, 12088 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 9604 SdHoareTripleChecker+Invalid, 8737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3242 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:13,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5233 Valid, 9604 Invalid, 8737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 5261 Invalid, 0 Unknown, 3242 Unchecked, 2.1s Time] [2022-03-15 14:02:13,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41482 states. [2022-03-15 14:02:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41482 to 22480. [2022-03-15 14:02:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22480 states, 22479 states have (on average 3.0754481960941322) internal successors, (69133), 22479 states have internal predecessors, (69133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22480 states to 22480 states and 69133 transitions. [2022-03-15 14:02:14,163 INFO L78 Accepts]: Start accepts. Automaton has 22480 states and 69133 transitions. Word has length 161 [2022-03-15 14:02:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:14,164 INFO L470 AbstractCegarLoop]: Abstraction has 22480 states and 69133 transitions. [2022-03-15 14:02:14,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.306451612903226) internal successors, (391), 62 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 22480 states and 69133 transitions. [2022-03-15 14:02:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:02:14,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:14,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:14,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:14,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:14,403 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:02:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1960293939, now seen corresponding path program 30 times [2022-03-15 14:02:14,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:14,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549373555] [2022-03-15 14:02:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:14,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:14,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549373555] [2022-03-15 14:02:14,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549373555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:14,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967433919] [2022-03-15 14:02:14,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:02:14,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:14,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:14,706 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:14,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 14:02:14,822 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 14:02:14,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:14,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 14:02:14,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:14,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:14,931 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:02:14,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:02:15,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:02:15,503 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:15,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:02:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:02:15,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:02:15,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967433919] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:15,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:02:15,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [21] total 36 [2022-03-15 14:02:15,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473557828] [2022-03-15 14:02:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:15,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:02:15,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:02:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:02:15,524 INFO L87 Difference]: Start difference. First operand 22480 states and 69133 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:16,506 INFO L93 Difference]: Finished difference Result 27509 states and 84110 transitions. [2022-03-15 14:02:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:02:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:02:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:16,575 INFO L225 Difference]: With dead ends: 27509 [2022-03-15 14:02:16,575 INFO L226 Difference]: Without dead ends: 27317 [2022-03-15 14:02:16,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=2899, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:02:16,576 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 729 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:16,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 2717 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 751 Invalid, 0 Unknown, 215 Unchecked, 0.3s Time] [2022-03-15 14:02:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27317 states. [2022-03-15 14:02:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27317 to 22440. [2022-03-15 14:02:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22440 states, 22439 states have (on average 3.0797718258389413) internal successors, (69107), 22439 states have internal predecessors, (69107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22440 states to 22440 states and 69107 transitions. [2022-03-15 14:02:17,046 INFO L78 Accepts]: Start accepts. Automaton has 22440 states and 69107 transitions. Word has length 161 [2022-03-15 14:02:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:17,046 INFO L470 AbstractCegarLoop]: Abstraction has 22440 states and 69107 transitions. [2022-03-15 14:02:17,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 22440 states and 69107 transitions. [2022-03-15 14:02:17,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:02:17,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:17,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:17,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:17,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:17,287 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:02:17,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1782376817, now seen corresponding path program 31 times [2022-03-15 14:02:17,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:17,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976684301] [2022-03-15 14:02:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:18,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:18,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976684301] [2022-03-15 14:02:18,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976684301] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:18,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474265406] [2022-03-15 14:02:18,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:02:18,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:18,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:18,290 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:18,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 14:02:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:18,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 14:02:18,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:19,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 14:02:19,239 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:19,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-15 14:02:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:19,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:19,418 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:02:19,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 14:02:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:19,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474265406] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:02:19,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:02:19,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 15] total 54 [2022-03-15 14:02:19,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101357575] [2022-03-15 14:02:19,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:02:19,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-15 14:02:19,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-15 14:02:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=2552, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:02:19,966 INFO L87 Difference]: Start difference. First operand 22440 states and 69107 transitions. Second operand has 54 states, 54 states have (on average 7.2592592592592595) internal successors, (392), 54 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) [2022-03-15 14:02:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:27,438 INFO L93 Difference]: Finished difference Result 33483 states and 102157 transitions. [2022-03-15 14:02:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 14:02:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.2592592592592595) internal successors, (392), 54 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 161 [2022-03-15 14:02:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:27,515 INFO L225 Difference]: With dead ends: 33483 [2022-03-15 14:02:27,515 INFO L226 Difference]: Without dead ends: 29037 [2022-03-15 14:02:27,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 300 SyntacticMatches, 24 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 5493 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3656, Invalid=15804, Unknown=0, NotChecked=0, Total=19460 [2022-03-15 14:02:27,517 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 4191 mSDsluCounter, 7354 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 4928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1878 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:27,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4191 Valid, 6362 Invalid, 4928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2763 Invalid, 0 Unknown, 1878 Unchecked, 1.2s Time] [2022-03-15 14:02:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2022-03-15 14:02:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 20961. [2022-03-15 14:02:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20961 states, 20960 states have (on average 3.082681297709924) internal successors, (64613), 20960 states have internal predecessors, (64613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20961 states to 20961 states and 64613 transitions. [2022-03-15 14:02:28,031 INFO L78 Accepts]: Start accepts. Automaton has 20961 states and 64613 transitions. Word has length 161 [2022-03-15 14:02:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:28,032 INFO L470 AbstractCegarLoop]: Abstraction has 20961 states and 64613 transitions. [2022-03-15 14:02:28,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.2592592592592595) internal successors, (392), 54 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) [2022-03-15 14:02:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20961 states and 64613 transitions. [2022-03-15 14:02:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:02:28,070 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:28,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:28,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:28,271 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,SelfDestructingSolverStorable32 [2022-03-15 14:02:28,271 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:02:28,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash -457717971, now seen corresponding path program 32 times [2022-03-15 14:02:28,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:28,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898202486] [2022-03-15 14:02:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:02:28,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:28,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898202486] [2022-03-15 14:02:28,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898202486] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:28,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:28,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:28,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370766760] [2022-03-15 14:02:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:28,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:28,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:28,347 INFO L87 Difference]: Start difference. First operand 20961 states and 64613 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:28,783 INFO L93 Difference]: Finished difference Result 39296 states and 119767 transitions. [2022-03-15 14:02:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 14:02:28,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:02:28,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:28,883 INFO L225 Difference]: With dead ends: 39296 [2022-03-15 14:02:28,883 INFO L226 Difference]: Without dead ends: 39076 [2022-03-15 14:02:28,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:02:28,883 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 578 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:28,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1016 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:02:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39076 states. [2022-03-15 14:02:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39076 to 22219. [2022-03-15 14:02:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22219 states, 22218 states have (on average 3.080925375821406) internal successors, (68452), 22218 states have internal predecessors, (68452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22219 states to 22219 states and 68452 transitions. [2022-03-15 14:02:29,449 INFO L78 Accepts]: Start accepts. Automaton has 22219 states and 68452 transitions. Word has length 161 [2022-03-15 14:02:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:29,450 INFO L470 AbstractCegarLoop]: Abstraction has 22219 states and 68452 transitions. [2022-03-15 14:02:29,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 22219 states and 68452 transitions. [2022-03-15 14:02:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:02:29,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:29,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:29,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-15 14:02:29,489 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:02:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1196914907, now seen corresponding path program 33 times [2022-03-15 14:02:29,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:29,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098317870] [2022-03-15 14:02:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:29,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:29,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:29,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098317870] [2022-03-15 14:02:29,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098317870] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:29,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508740065] [2022-03-15 14:02:29,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:02:29,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:29,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:29,812 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:29,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 14:02:29,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:02:29,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:29,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:02:29,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:30,316 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:30,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:02:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:02:30,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:02:30,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508740065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:30,342 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:02:30,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22] total 29 [2022-03-15 14:02:30,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073539556] [2022-03-15 14:02:30,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:30,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 14:02:30,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 14:02:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:02:30,343 INFO L87 Difference]: Start difference. First operand 22219 states and 68452 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:30,720 INFO L93 Difference]: Finished difference Result 28659 states and 88517 transitions. [2022-03-15 14:02:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 14:02:30,721 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:02:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:30,789 INFO L225 Difference]: With dead ends: 28659 [2022-03-15 14:02:30,789 INFO L226 Difference]: Without dead ends: 28590 [2022-03-15 14:02:30,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:02:30,790 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 152 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:30,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2099 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 404 Invalid, 0 Unknown, 283 Unchecked, 0.2s Time] [2022-03-15 14:02:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28590 states. [2022-03-15 14:02:31,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28590 to 23317. [2022-03-15 14:02:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23317 states, 23316 states have (on average 3.096929147366615) internal successors, (72208), 23316 states have internal predecessors, (72208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23317 states to 23317 states and 72208 transitions. [2022-03-15 14:02:31,380 INFO L78 Accepts]: Start accepts. Automaton has 23317 states and 72208 transitions. Word has length 161 [2022-03-15 14:02:31,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:31,381 INFO L470 AbstractCegarLoop]: Abstraction has 23317 states and 72208 transitions. [2022-03-15 14:02:31,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 23317 states and 72208 transitions. [2022-03-15 14:02:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:02:31,421 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:31,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:31,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-15 14:02:31,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:31,622 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:02:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash 154826661, now seen corresponding path program 34 times [2022-03-15 14:02:31,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:31,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261137278] [2022-03-15 14:02:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:32,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:32,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261137278] [2022-03-15 14:02:32,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261137278] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:32,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562110426] [2022-03-15 14:02:32,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:02:32,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:32,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:32,053 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:32,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 14:02:32,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:02:32,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:32,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 14:02:32,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:33,009 INFO L353 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-03-15 14:02:33,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-03-15 14:02:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:33,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:33,455 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:33,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-03-15 14:02:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:34,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562110426] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:02:34,241 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:02:34,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 19] total 50 [2022-03-15 14:02:34,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900428303] [2022-03-15 14:02:34,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:02:34,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 14:02:34,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:34,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 14:02:34,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=2154, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:02:34,243 INFO L87 Difference]: Start difference. First operand 23317 states and 72208 transitions. Second operand has 50 states, 50 states have (on average 6.6) internal successors, (330), 50 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:37,836 INFO L93 Difference]: Finished difference Result 44595 states and 134932 transitions. [2022-03-15 14:02:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 14:02:37,836 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.6) internal successors, (330), 50 states have internal predecessors, (330), 0 states have call successors, (0), 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 [2022-03-15 14:02:37,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:37,941 INFO L225 Difference]: With dead ends: 44595 [2022-03-15 14:02:37,941 INFO L226 Difference]: Without dead ends: 39816 [2022-03-15 14:02:37,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 310 SyntacticMatches, 12 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1884, Invalid=10326, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 14:02:37,943 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 4625 mSDsluCounter, 7398 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 6273 SdHoareTripleChecker+Invalid, 4296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1531 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:37,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4625 Valid, 6273 Invalid, 4296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2617 Invalid, 0 Unknown, 1531 Unchecked, 1.1s Time] [2022-03-15 14:02:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39816 states. [2022-03-15 14:02:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39816 to 24943. [2022-03-15 14:02:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24943 states, 24942 states have (on average 3.0923743083954776) internal successors, (77130), 24942 states have internal predecessors, (77130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24943 states to 24943 states and 77130 transitions. [2022-03-15 14:02:38,843 INFO L78 Accepts]: Start accepts. Automaton has 24943 states and 77130 transitions. Word has length 161 [2022-03-15 14:02:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:38,843 INFO L470 AbstractCegarLoop]: Abstraction has 24943 states and 77130 transitions. [2022-03-15 14:02:38,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.6) internal successors, (330), 50 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24943 states and 77130 transitions. [2022-03-15 14:02:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:02:38,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:38,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:38,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:39,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:39,094 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:02:39,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash -118673683, now seen corresponding path program 35 times [2022-03-15 14:02:39,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:39,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531241405] [2022-03-15 14:02:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:39,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:39,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:39,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531241405] [2022-03-15 14:02:39,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531241405] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:39,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009799526] [2022-03-15 14:02:39,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:02:39,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:39,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:39,565 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:39,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 14:02:39,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:02:39,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:39,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-15 14:02:39,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:40,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:02:41,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:41,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:41,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:41,654 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-15 14:02:41,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-03-15 14:02:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:41,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:45,786 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:45,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 130 [2022-03-15 14:02:45,799 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:45,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 2888 treesize of output 2716 [2022-03-15 14:02:45,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:45,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 3200 treesize of output 2362 [2022-03-15 14:02:45,865 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:45,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 2336 treesize of output 2146 [2022-03-15 14:02:45,899 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:45,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 2120 treesize of output 1714 [2022-03-15 14:02:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:54,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009799526] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:02:54,360 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:02:54,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30, 27] total 73 [2022-03-15 14:02:54,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658711145] [2022-03-15 14:02:54,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:02:54,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-15 14:02:54,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-15 14:02:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=4496, Unknown=190, NotChecked=0, Total=5256 [2022-03-15 14:02:54,361 INFO L87 Difference]: Start difference. First operand 24943 states and 77130 transitions. Second operand has 73 states, 73 states have (on average 5.342465753424658) internal successors, (390), 73 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:08,325 INFO L93 Difference]: Finished difference Result 39928 states and 121331 transitions. [2022-03-15 14:03:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-15 14:03:08,325 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.342465753424658) internal successors, (390), 73 states have internal predecessors, (390), 0 states have call successors, (0), 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 [2022-03-15 14:03:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:08,438 INFO L225 Difference]: With dead ends: 39928 [2022-03-15 14:03:08,439 INFO L226 Difference]: Without dead ends: 39848 [2022-03-15 14:03:08,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 306 SyntacticMatches, 43 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 8039 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3468, Invalid=18339, Unknown=245, NotChecked=0, Total=22052 [2022-03-15 14:03:08,440 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 5539 mSDsluCounter, 11452 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 9557 SdHoareTripleChecker+Invalid, 7462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3966 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:08,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5539 Valid, 9557 Invalid, 7462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3343 Invalid, 0 Unknown, 3966 Unchecked, 1.4s Time] [2022-03-15 14:03:08,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39848 states. [2022-03-15 14:03:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39848 to 26697. [2022-03-15 14:03:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26697 states, 26696 states have (on average 3.0874662870842076) internal successors, (82423), 26696 states have internal predecessors, (82423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26697 states to 26697 states and 82423 transitions. [2022-03-15 14:03:09,171 INFO L78 Accepts]: Start accepts. Automaton has 26697 states and 82423 transitions. Word has length 161 [2022-03-15 14:03:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:09,171 INFO L470 AbstractCegarLoop]: Abstraction has 26697 states and 82423 transitions. [2022-03-15 14:03:09,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.342465753424658) internal successors, (390), 73 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 26697 states and 82423 transitions. [2022-03-15 14:03:09,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:09,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:09,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:09,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:09,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-15 14:03:09,428 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash 308460667, now seen corresponding path program 36 times [2022-03-15 14:03:09,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:09,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130199876] [2022-03-15 14:03:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:09,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:09,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130199876] [2022-03-15 14:03:09,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130199876] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:09,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417063014] [2022-03-15 14:03:09,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:03:09,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:09,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:09,927 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:09,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 14:03:10,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 14:03:10,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:10,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 14:03:10,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:10,530 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:03:10,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:03:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:10,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:10,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417063014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:10,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:10,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 32 [2022-03-15 14:03:10,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120122386] [2022-03-15 14:03:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:10,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 14:03:10,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 14:03:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:03:10,561 INFO L87 Difference]: Start difference. First operand 26697 states and 82423 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:11,066 INFO L93 Difference]: Finished difference Result 31660 states and 97603 transitions. [2022-03-15 14:03:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:03:11,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:03:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:11,154 INFO L225 Difference]: With dead ends: 31660 [2022-03-15 14:03:11,154 INFO L226 Difference]: Without dead ends: 31579 [2022-03-15 14:03:11,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=1666, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:03:11,155 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 148 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:11,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2033 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 405 Invalid, 0 Unknown, 371 Unchecked, 0.2s Time] [2022-03-15 14:03:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31579 states. [2022-03-15 14:03:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31579 to 26973. [2022-03-15 14:03:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26973 states, 26972 states have (on average 3.084977013198873) internal successors, (83208), 26972 states have internal predecessors, (83208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26973 states to 26973 states and 83208 transitions. [2022-03-15 14:03:11,878 INFO L78 Accepts]: Start accepts. Automaton has 26973 states and 83208 transitions. Word has length 161 [2022-03-15 14:03:11,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:11,879 INFO L470 AbstractCegarLoop]: Abstraction has 26973 states and 83208 transitions. [2022-03-15 14:03:11,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 26973 states and 83208 transitions. [2022-03-15 14:03:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:11,932 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:11,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:11,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:12,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-15 14:03:12,133 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1233067885, now seen corresponding path program 37 times [2022-03-15 14:03:12,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:12,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340425319] [2022-03-15 14:03:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:12,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:12,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340425319] [2022-03-15 14:03:12,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340425319] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:12,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74454645] [2022-03-15 14:03:12,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:03:12,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:12,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:12,478 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:12,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 14:03:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:12,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 14:03:12,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:13,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 14:03:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:13,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:03:13,229 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:03:13,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 14:03:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:13,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74454645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:03:13,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:03:13,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 14] total 33 [2022-03-15 14:03:13,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347561835] [2022-03-15 14:03:13,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:03:13,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:03:13,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:03:13,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:03:13,616 INFO L87 Difference]: Start difference. First operand 26973 states and 83208 transitions. Second operand has 33 states, 33 states have (on average 7.9393939393939394) internal successors, (262), 33 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:14,848 INFO L93 Difference]: Finished difference Result 31293 states and 96270 transitions. [2022-03-15 14:03:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:03:14,849 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.9393939393939394) internal successors, (262), 33 states have internal predecessors, (262), 0 states have call successors, (0), 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 [2022-03-15 14:03:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:14,929 INFO L225 Difference]: With dead ends: 31293 [2022-03-15 14:03:14,930 INFO L226 Difference]: Without dead ends: 30637 [2022-03-15 14:03:14,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=687, Invalid=2505, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:03:14,931 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1497 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:14,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 2945 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:03:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30637 states. [2022-03-15 14:03:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30637 to 26703. [2022-03-15 14:03:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26703 states, 26702 states have (on average 3.086697625646019) internal successors, (82421), 26702 states have internal predecessors, (82421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26703 states to 26703 states and 82421 transitions. [2022-03-15 14:03:15,809 INFO L78 Accepts]: Start accepts. Automaton has 26703 states and 82421 transitions. Word has length 161 [2022-03-15 14:03:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:15,809 INFO L470 AbstractCegarLoop]: Abstraction has 26703 states and 82421 transitions. [2022-03-15 14:03:15,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.9393939393939394) internal successors, (262), 33 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 26703 states and 82421 transitions. [2022-03-15 14:03:15,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:15,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:15,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:15,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-15 14:03:16,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-15 14:03:16,066 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:16,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1055360647, now seen corresponding path program 38 times [2022-03-15 14:03:16,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:16,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593696174] [2022-03-15 14:03:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:16,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:16,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593696174] [2022-03-15 14:03:16,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593696174] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:16,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025048722] [2022-03-15 14:03:16,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:03:16,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:16,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:16,770 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:16,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 14:03:16,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:03:16,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:16,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:03:16,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:17,447 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:03:17,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:03:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:17,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:17,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025048722] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:17,467 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:17,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [28] total 36 [2022-03-15 14:03:17,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598011182] [2022-03-15 14:03:17,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:17,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:03:17,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:03:17,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:03:17,468 INFO L87 Difference]: Start difference. First operand 26703 states and 82421 transitions. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:18,199 INFO L93 Difference]: Finished difference Result 32551 states and 100238 transitions. [2022-03-15 14:03:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:03:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:03:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:18,275 INFO L225 Difference]: With dead ends: 32551 [2022-03-15 14:03:18,275 INFO L226 Difference]: Without dead ends: 32485 [2022-03-15 14:03:18,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=2086, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:03:18,276 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 167 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:18,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2188 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 404 Invalid, 0 Unknown, 317 Unchecked, 0.2s Time] [2022-03-15 14:03:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32485 states. [2022-03-15 14:03:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32485 to 26932. [2022-03-15 14:03:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26932 states, 26931 states have (on average 3.0856262299951727) internal successors, (83099), 26931 states have internal predecessors, (83099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26932 states to 26932 states and 83099 transitions. [2022-03-15 14:03:19,054 INFO L78 Accepts]: Start accepts. Automaton has 26932 states and 83099 transitions. Word has length 161 [2022-03-15 14:03:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:19,054 INFO L470 AbstractCegarLoop]: Abstraction has 26932 states and 83099 transitions. [2022-03-15 14:03:19,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26932 states and 83099 transitions. [2022-03-15 14:03:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:19,122 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:19,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:19,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:19,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-15 14:03:19,353 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:19,354 INFO L85 PathProgramCache]: Analyzing trace with hash -173316551, now seen corresponding path program 39 times [2022-03-15 14:03:19,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:19,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534516104] [2022-03-15 14:03:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:19,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:20,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:20,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534516104] [2022-03-15 14:03:20,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534516104] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:20,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840350699] [2022-03-15 14:03:20,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:03:20,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:20,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:20,355 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:20,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 14:03:20,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:03:20,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:20,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:03:20,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:20,967 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:03:20,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:03:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:20,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:20,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840350699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:20,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:20,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [29] total 37 [2022-03-15 14:03:20,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277766711] [2022-03-15 14:03:20,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:20,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:03:20,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:03:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:03:20,988 INFO L87 Difference]: Start difference. First operand 26932 states and 83099 transitions. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:21,484 INFO L93 Difference]: Finished difference Result 32660 states and 100640 transitions. [2022-03-15 14:03:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:03:21,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:03:21,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:21,566 INFO L225 Difference]: With dead ends: 32660 [2022-03-15 14:03:21,566 INFO L226 Difference]: Without dead ends: 32603 [2022-03-15 14:03:21,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=2071, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:03:21,567 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 174 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:21,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 2079 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 406 Invalid, 0 Unknown, 303 Unchecked, 0.2s Time] [2022-03-15 14:03:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32603 states. [2022-03-15 14:03:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32603 to 26914. [2022-03-15 14:03:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26914 states, 26913 states have (on average 3.08620369338238) internal successors, (83059), 26913 states have internal predecessors, (83059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26914 states to 26914 states and 83059 transitions. [2022-03-15 14:03:22,300 INFO L78 Accepts]: Start accepts. Automaton has 26914 states and 83059 transitions. Word has length 161 [2022-03-15 14:03:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:22,300 INFO L470 AbstractCegarLoop]: Abstraction has 26914 states and 83059 transitions. [2022-03-15 14:03:22,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 26914 states and 83059 transitions. [2022-03-15 14:03:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:22,351 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:22,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:22,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-15 14:03:22,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:22,552 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1320002653, now seen corresponding path program 40 times [2022-03-15 14:03:22,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:22,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980788868] [2022-03-15 14:03:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:23,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:23,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980788868] [2022-03-15 14:03:23,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980788868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:23,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421524100] [2022-03-15 14:03:23,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:03:23,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:23,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:23,139 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:23,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 14:03:23,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:03:23,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:23,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 14:03:23,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:23,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 14:03:23,800 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:03:23,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-15 14:03:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:23,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:03:23,898 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:03:23,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-03-15 14:03:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:24,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421524100] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:03:24,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:03:24,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 14] total 42 [2022-03-15 14:03:24,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363963984] [2022-03-15 14:03:24,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:03:24,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:03:24,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:03:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1493, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:03:24,313 INFO L87 Difference]: Start difference. First operand 26914 states and 83059 transitions. Second operand has 42 states, 42 states have (on average 7.738095238095238) internal successors, (325), 42 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:28,338 INFO L93 Difference]: Finished difference Result 40023 states and 122585 transitions. [2022-03-15 14:03:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 14:03:28,338 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.738095238095238) internal successors, (325), 42 states have internal predecessors, (325), 0 states have call successors, (0), 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 [2022-03-15 14:03:28,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:28,411 INFO L225 Difference]: With dead ends: 40023 [2022-03-15 14:03:28,411 INFO L226 Difference]: Without dead ends: 28768 [2022-03-15 14:03:28,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 308 SyntacticMatches, 7 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2314, Invalid=7586, Unknown=0, NotChecked=0, Total=9900 [2022-03-15 14:03:28,412 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 2583 mSDsluCounter, 5905 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 5324 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:28,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 5324 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2814 Invalid, 0 Unknown, 137 Unchecked, 1.3s Time] [2022-03-15 14:03:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28768 states. [2022-03-15 14:03:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28768 to 22143. [2022-03-15 14:03:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22143 states, 22142 states have (on average 3.0606539607984824) internal successors, (67769), 22142 states have internal predecessors, (67769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22143 states to 22143 states and 67769 transitions. [2022-03-15 14:03:28,878 INFO L78 Accepts]: Start accepts. Automaton has 22143 states and 67769 transitions. Word has length 161 [2022-03-15 14:03:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:28,878 INFO L470 AbstractCegarLoop]: Abstraction has 22143 states and 67769 transitions. [2022-03-15 14:03:28,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.738095238095238) internal successors, (325), 42 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22143 states and 67769 transitions. [2022-03-15 14:03:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:28,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:28,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:28,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:29,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-15 14:03:29,119 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:29,119 INFO L85 PathProgramCache]: Analyzing trace with hash -574561573, now seen corresponding path program 41 times [2022-03-15 14:03:29,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:29,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668304473] [2022-03-15 14:03:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:29,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:29,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:29,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668304473] [2022-03-15 14:03:29,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668304473] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:29,203 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:03:29,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:03:29,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898230388] [2022-03-15 14:03:29,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:29,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:03:29,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:03:29,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:03:29,205 INFO L87 Difference]: Start difference. First operand 22143 states and 67769 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:29,716 INFO L93 Difference]: Finished difference Result 28852 states and 87559 transitions. [2022-03-15 14:03:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 14:03:29,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:03:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:29,796 INFO L225 Difference]: With dead ends: 28852 [2022-03-15 14:03:29,796 INFO L226 Difference]: Without dead ends: 27856 [2022-03-15 14:03:29,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:03:29,797 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 387 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:29,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1048 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:03:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-03-15 14:03:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 22405. [2022-03-15 14:03:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22405 states, 22404 states have (on average 3.066372076414926) internal successors, (68699), 22404 states have internal predecessors, (68699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22405 states to 22405 states and 68699 transitions. [2022-03-15 14:03:30,253 INFO L78 Accepts]: Start accepts. Automaton has 22405 states and 68699 transitions. Word has length 161 [2022-03-15 14:03:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:30,254 INFO L470 AbstractCegarLoop]: Abstraction has 22405 states and 68699 transitions. [2022-03-15 14:03:30,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22405 states and 68699 transitions. [2022-03-15 14:03:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:30,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:30,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:30,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-15 14:03:30,294 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:30,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash -911977499, now seen corresponding path program 42 times [2022-03-15 14:03:30,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:30,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323417271] [2022-03-15 14:03:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:30,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:30,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323417271] [2022-03-15 14:03:30,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323417271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:30,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:03:30,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 14:03:30,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635518127] [2022-03-15 14:03:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:30,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 14:03:30,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 14:03:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:03:30,463 INFO L87 Difference]: Start difference. First operand 22405 states and 68699 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:30,793 INFO L93 Difference]: Finished difference Result 36208 states and 110744 transitions. [2022-03-15 14:03:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:03:30,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:03:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:30,880 INFO L225 Difference]: With dead ends: 36208 [2022-03-15 14:03:30,880 INFO L226 Difference]: Without dead ends: 34684 [2022-03-15 14:03:30,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:03:30,880 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 407 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:30,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 611 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:03:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34684 states. [2022-03-15 14:03:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34684 to 20706. [2022-03-15 14:03:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20706 states, 20705 states have (on average 3.0757304998792563) internal successors, (63683), 20705 states have internal predecessors, (63683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20706 states to 20706 states and 63683 transitions. [2022-03-15 14:03:31,594 INFO L78 Accepts]: Start accepts. Automaton has 20706 states and 63683 transitions. Word has length 161 [2022-03-15 14:03:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:31,594 INFO L470 AbstractCegarLoop]: Abstraction has 20706 states and 63683 transitions. [2022-03-15 14:03:31,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 20706 states and 63683 transitions. [2022-03-15 14:03:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:31,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:31,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:31,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-15 14:03:31,632 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:31,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1701181431, now seen corresponding path program 43 times [2022-03-15 14:03:31,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:31,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651363481] [2022-03-15 14:03:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:31,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:32,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:32,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651363481] [2022-03-15 14:03:32,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651363481] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:32,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811154600] [2022-03-15 14:03:32,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:03:32,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:32,295 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:32,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 14:03:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:32,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-15 14:03:32,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:33,462 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-15 14:03:33,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-03-15 14:03:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:33,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:03:33,715 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:03:33,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-03-15 14:03:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:34,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811154600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:03:34,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:03:34,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 53 [2022-03-15 14:03:34,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161731421] [2022-03-15 14:03:34,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:03:34,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-15 14:03:34,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-15 14:03:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2450, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:03:34,553 INFO L87 Difference]: Start difference. First operand 20706 states and 63683 transitions. Second operand has 53 states, 53 states have (on average 6.528301886792453) internal successors, (346), 53 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:36,430 INFO L93 Difference]: Finished difference Result 22937 states and 70210 transitions. [2022-03-15 14:03:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:03:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.528301886792453) internal successors, (346), 53 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 161 [2022-03-15 14:03:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:36,480 INFO L225 Difference]: With dead ends: 22937 [2022-03-15 14:03:36,481 INFO L226 Difference]: Without dead ends: 22797 [2022-03-15 14:03:36,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=946, Invalid=5696, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 14:03:36,482 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 2447 mSDsluCounter, 4276 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:36,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2447 Valid, 3972 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1440 Invalid, 0 Unknown, 280 Unchecked, 0.6s Time] [2022-03-15 14:03:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22797 states. [2022-03-15 14:03:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22797 to 20727. [2022-03-15 14:03:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20727 states, 20726 states have (on average 3.07850043423719) internal successors, (63805), 20726 states have internal predecessors, (63805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20727 states to 20727 states and 63805 transitions. [2022-03-15 14:03:36,873 INFO L78 Accepts]: Start accepts. Automaton has 20727 states and 63805 transitions. Word has length 161 [2022-03-15 14:03:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:36,874 INFO L470 AbstractCegarLoop]: Abstraction has 20727 states and 63805 transitions. [2022-03-15 14:03:36,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.528301886792453) internal successors, (346), 53 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 20727 states and 63805 transitions. [2022-03-15 14:03:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:36,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:36,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:36,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-15 14:03:37,112 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,SelfDestructingSolverStorable44 [2022-03-15 14:03:37,113 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:37,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2025388859, now seen corresponding path program 44 times [2022-03-15 14:03:37,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:37,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612470031] [2022-03-15 14:03:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:37,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:37,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:37,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612470031] [2022-03-15 14:03:37,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612470031] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:37,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107401862] [2022-03-15 14:03:37,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:03:37,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:37,515 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:37,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 14:03:37,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:03:37,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:37,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 14:03:37,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:38,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:38,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:03:38,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:38,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-03-15 14:03:38,687 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:03:38,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:03:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:38,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:38,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107401862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:38,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:38,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [23] total 40 [2022-03-15 14:03:38,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168849714] [2022-03-15 14:03:38,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:38,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:03:38,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:38,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:03:38,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1462, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:03:38,708 INFO L87 Difference]: Start difference. First operand 20727 states and 63805 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:39,766 INFO L93 Difference]: Finished difference Result 23078 states and 70853 transitions. [2022-03-15 14:03:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 14:03:39,767 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:03:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:39,820 INFO L225 Difference]: With dead ends: 23078 [2022-03-15 14:03:39,821 INFO L226 Difference]: Without dead ends: 22993 [2022-03-15 14:03:39,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=3225, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:03:39,822 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 754 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:39,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 2695 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1041 Invalid, 0 Unknown, 155 Unchecked, 0.4s Time] [2022-03-15 14:03:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22993 states. [2022-03-15 14:03:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22993 to 20996. [2022-03-15 14:03:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20996 states, 20995 states have (on average 3.079066444391522) internal successors, (64645), 20995 states have internal predecessors, (64645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20996 states to 20996 states and 64645 transitions. [2022-03-15 14:03:40,311 INFO L78 Accepts]: Start accepts. Automaton has 20996 states and 64645 transitions. Word has length 161 [2022-03-15 14:03:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:40,311 INFO L470 AbstractCegarLoop]: Abstraction has 20996 states and 64645 transitions. [2022-03-15 14:03:40,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 20996 states and 64645 transitions. [2022-03-15 14:03:40,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:40,345 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:40,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:40,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:40,547 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,SelfDestructingSolverStorable45 [2022-03-15 14:03:40,548 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash -287958755, now seen corresponding path program 45 times [2022-03-15 14:03:40,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:40,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680174675] [2022-03-15 14:03:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:40,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:40,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680174675] [2022-03-15 14:03:40,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680174675] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:40,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947150858] [2022-03-15 14:03:40,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:03:40,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:40,864 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:40,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 14:03:41,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:03:41,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:41,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 14:03:41,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:41,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:41,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:03:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:41,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:03:41,979 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:03:41,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-03-15 14:03:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:42,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:42,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947150858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:42,000 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:42,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [21] total 38 [2022-03-15 14:03:42,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484985506] [2022-03-15 14:03:42,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:42,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:03:42,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:03:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1313, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:03:42,001 INFO L87 Difference]: Start difference. First operand 20996 states and 64645 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:43,226 INFO L93 Difference]: Finished difference Result 23661 states and 72516 transitions. [2022-03-15 14:03:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 14:03:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:03:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:43,292 INFO L225 Difference]: With dead ends: 23661 [2022-03-15 14:03:43,292 INFO L226 Difference]: Without dead ends: 23506 [2022-03-15 14:03:43,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=357, Invalid=3183, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:03:43,293 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 898 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 279 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:43,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 2609 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 910 Invalid, 0 Unknown, 279 Unchecked, 0.4s Time] [2022-03-15 14:03:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23506 states. [2022-03-15 14:03:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23506 to 21326. [2022-03-15 14:03:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21326 states, 21325 states have (on average 3.0765767878077375) internal successors, (65608), 21325 states have internal predecessors, (65608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21326 states to 21326 states and 65608 transitions. [2022-03-15 14:03:43,714 INFO L78 Accepts]: Start accepts. Automaton has 21326 states and 65608 transitions. Word has length 161 [2022-03-15 14:03:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:43,714 INFO L470 AbstractCegarLoop]: Abstraction has 21326 states and 65608 transitions. [2022-03-15 14:03:43,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 21326 states and 65608 transitions. [2022-03-15 14:03:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:03:43,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:43,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:43,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-15 14:03:43,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-03-15 14:03:43,955 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:03:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1369941943, now seen corresponding path program 46 times [2022-03-15 14:03:43,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:43,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766218384] [2022-03-15 14:03:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:43,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:44,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:44,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766218384] [2022-03-15 14:03:44,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766218384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:44,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139381897] [2022-03-15 14:03:44,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:03:44,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:44,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:44,413 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:44,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 14:03:44,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:03:44,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:44,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-15 14:03:44,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:44,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:44,917 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:03:44,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:03:45,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:03:45,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:45,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:45,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-15 14:03:46,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-15 14:03:46,553 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-15 14:03:46,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 13 [2022-03-15 14:03:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:46,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:04:01,587 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:04:01,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 84 [2022-03-15 14:04:01,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:04:01,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2028 treesize of output 1956 [2022-03-15 14:04:01,642 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:04:01,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1956 treesize of output 1888 [2022-03-15 14:04:01,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1789 treesize of output 1693 [2022-03-15 14:04:01,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1693 treesize of output 1501 [2022-03-15 14:04:01,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1501 treesize of output 1453 [2022-03-15 14:04:01,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1453 treesize of output 1357 [2022-03-15 14:04:01,770 WARN L325 FreeRefinementEngine]: Global settings require throwing the following exception [2022-03-15 14:04:01,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-15 14:04:01,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:01,996 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:635) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-03-15 14:04:01,999 INFO L158 Benchmark]: Toolchain (without parser) took 352928.47ms. Allocated memory was 191.9MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 140.3MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2022-03-15 14:04:02,000 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 191.9MB. Free memory was 156.8MB in the beginning and 156.7MB in the end (delta: 73.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:04:02,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.19ms. Allocated memory was 191.9MB in the beginning and 234.9MB in the end (delta: 43.0MB). Free memory was 140.1MB in the beginning and 208.9MB in the end (delta: -68.8MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-03-15 14:04:02,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.96ms. Allocated memory is still 234.9MB. Free memory was 208.9MB in the beginning and 206.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:04:02,000 INFO L158 Benchmark]: Boogie Preprocessor took 36.60ms. Allocated memory is still 234.9MB. Free memory was 206.3MB in the beginning and 204.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:04:02,000 INFO L158 Benchmark]: RCFGBuilder took 516.03ms. Allocated memory is still 234.9MB. Free memory was 204.7MB in the beginning and 181.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-03-15 14:04:02,000 INFO L158 Benchmark]: TraceAbstraction took 352064.65ms. Allocated memory was 234.9MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 181.2MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2022-03-15 14:04:02,001 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 191.9MB. Free memory was 156.8MB in the beginning and 156.7MB in the end (delta: 73.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.19ms. Allocated memory was 191.9MB in the beginning and 234.9MB in the end (delta: 43.0MB). Free memory was 140.1MB in the beginning and 208.9MB in the end (delta: -68.8MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.96ms. Allocated memory is still 234.9MB. Free memory was 208.9MB in the beginning and 206.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.60ms. Allocated memory is still 234.9MB. Free memory was 206.3MB in the beginning and 204.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 516.03ms. Allocated memory is still 234.9MB. Free memory was 204.7MB in the beginning and 181.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 352064.65ms. Allocated memory was 234.9MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 181.2MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-15 14:04:02,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...