/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 01:12:45,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 01:12:45,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 01:12:45,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 01:12:46,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 01:12:46,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 01:12:46,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 01:12:46,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-09 01:12:46,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 01:12:46,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 01:12:46,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 01:12:46,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 01:12:46,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 01:12:46,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 01:12:46,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 01:12:46,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 01:12:46,067 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 01:12:46,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 01:12:46,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 01:12:46,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 01:12:46,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 01:12:46,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 01:12:46,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 01:12:46,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 01:12:46,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 01:12:46,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 01:12:46,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 01:12:46,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 01:12:46,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 01:12:46,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 01:12:46,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 01:12:46,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-09 01:12:46,323 INFO L275 PluginConnector]: CDTParser initialized [2022-02-09 01:12:46,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-09 01:12:46,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea835812/aab6313b715240c6bfb5c543333e9be6/FLAGf5bdf6484 [2022-02-09 01:12:46,798 INFO L306 CDTParser]: Found 1 translation units. [2022-02-09 01:12:46,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-09 01:12:46,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea835812/aab6313b715240c6bfb5c543333e9be6/FLAGf5bdf6484 [2022-02-09 01:12:47,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea835812/aab6313b715240c6bfb5c543333e9be6 [2022-02-09 01:12:47,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 01:12:47,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-09 01:12:47,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-09 01:12:47,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-09 01:12:47,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-09 01:12:47,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2297c528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47, skipping insertion in model container [2022-02-09 01:12:47,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-09 01:12:47,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-09 01:12:47,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-02-09 01:12:47,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-09 01:12:47,408 INFO L203 MainTranslator]: Completed pre-run [2022-02-09 01:12:47,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-02-09 01:12:47,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-09 01:12:47,435 INFO L208 MainTranslator]: Completed translation [2022-02-09 01:12:47,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47 WrapperNode [2022-02-09 01:12:47,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-09 01:12:47,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 01:12:47,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 01:12:47,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 01:12:47,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,464 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-02-09 01:12:47,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 01:12:47,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 01:12:47,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 01:12:47,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 01:12:47,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 01:12:47,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 01:12:47,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 01:12:47,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 01:12:47,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (1/1) ... [2022-02-09 01:12:47,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 01:12:47,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:47,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 01:12:47,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 01:12:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-09 01:12:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 01:12:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 01:12:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 01:12:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 01:12:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-09 01:12:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-09 01:12:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-09 01:12:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-09 01:12:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-09 01:12:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 01:12:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 01:12:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-09 01:12:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-09 01:12:47,574 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 01:12:47,640 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 01:12:47,641 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 01:12:47,800 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 01:12:47,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 01:12:47,857 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-09 01:12:47,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:12:47 BoogieIcfgContainer [2022-02-09 01:12:47,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 01:12:47,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 01:12:47,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 01:12:47,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 01:12:47,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.02 01:12:47" (1/3) ... [2022-02-09 01:12:47,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682e9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:12:47, skipping insertion in model container [2022-02-09 01:12:47,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:12:47" (2/3) ... [2022-02-09 01:12:47,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682e9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:12:47, skipping insertion in model container [2022-02-09 01:12:47,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:12:47" (3/3) ... [2022-02-09 01:12:47,869 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-02-09 01:12:47,874 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 01:12:47,875 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 01:12:47,875 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 01:12:47,875 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 01:12:47,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,925 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,929 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,930 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,930 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,933 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,938 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,938 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,938 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,938 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,939 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,939 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,940 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,940 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,941 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,941 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,945 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,946 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,946 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,946 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,946 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,946 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:12:47,962 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-09 01:12:48,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 01:12:48,021 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 01:12:48,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 01:12:48,033 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 82 transitions, 180 flow [2022-02-09 01:12:48,085 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-09 01:12:48,102 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:48,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:48,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1376248037, now seen corresponding path program 1 times [2022-02-09 01:12:48,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:48,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741815991] [2022-02-09 01:12:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:48,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:48,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:48,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741815991] [2022-02-09 01:12:48,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741815991] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:12:48,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:12:48,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 01:12:48,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844951519] [2022-02-09 01:12:48,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:12:48,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-09 01:12:48,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-09 01:12:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-09 01:12:48,341 INFO L87 Difference]: Start difference. First operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:48,386 INFO L93 Difference]: Finished difference Result 328 states and 778 transitions. [2022-02-09 01:12:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 01:12:48,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-02-09 01:12:48,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:48,399 INFO L225 Difference]: With dead ends: 328 [2022-02-09 01:12:48,400 INFO L226 Difference]: Without dead ends: 326 [2022-02-09 01:12:48,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-09 01:12:48,408 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:48,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:12:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-02-09 01:12:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-02-09 01:12:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.3876923076923076) internal successors, (776), 325 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 776 transitions. [2022-02-09 01:12:48,481 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 776 transitions. Word has length 58 [2022-02-09 01:12:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:48,481 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 776 transitions. [2022-02-09 01:12:48,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 776 transitions. [2022-02-09 01:12:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-09 01:12:48,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:48,485 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] [2022-02-09 01:12:48,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 01:12:48,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:48,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:48,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1501901863, now seen corresponding path program 1 times [2022-02-09 01:12:48,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:48,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624488153] [2022-02-09 01:12:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:48,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:48,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:48,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624488153] [2022-02-09 01:12:48,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624488153] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:12:48,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:12:48,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 01:12:48,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756370221] [2022-02-09 01:12:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:12:48,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 01:12:48,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 01:12:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 01:12:48,704 INFO L87 Difference]: Start difference. First operand 326 states and 776 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:48,779 INFO L93 Difference]: Finished difference Result 500 states and 1208 transitions. [2022-02-09 01:12:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 01:12:48,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-02-09 01:12:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:48,785 INFO L225 Difference]: With dead ends: 500 [2022-02-09 01:12:48,785 INFO L226 Difference]: Without dead ends: 386 [2022-02-09 01:12:48,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-09 01:12:48,791 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 6 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:48,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 202 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:12:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-02-09 01:12:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 356. [2022-02-09 01:12:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.4056338028169013) internal successors, (854), 355 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 854 transitions. [2022-02-09 01:12:48,828 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 854 transitions. Word has length 58 [2022-02-09 01:12:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:48,829 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 854 transitions. [2022-02-09 01:12:48,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 854 transitions. [2022-02-09 01:12:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-09 01:12:48,839 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:48,839 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] [2022-02-09 01:12:48,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 01:12:48,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1550020423, now seen corresponding path program 1 times [2022-02-09 01:12:48,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:48,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382918392] [2022-02-09 01:12:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:48,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:48,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:48,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382918392] [2022-02-09 01:12:48,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382918392] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:48,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444949966] [2022-02-09 01:12:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:48,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:48,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:48,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-09 01:12:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:49,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-09 01:12:49,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:49,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:49,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444949966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:49,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:49,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-02-09 01:12:49,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50344007] [2022-02-09 01:12:49,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:49,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-09 01:12:49,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-09 01:12:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-09 01:12:49,399 INFO L87 Difference]: Start difference. First operand 356 states and 854 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:49,596 INFO L93 Difference]: Finished difference Result 540 states and 1342 transitions. [2022-02-09 01:12:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 01:12:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-09 01:12:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:49,601 INFO L225 Difference]: With dead ends: 540 [2022-02-09 01:12:49,601 INFO L226 Difference]: Without dead ends: 540 [2022-02-09 01:12:49,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-02-09 01:12:49,604 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 143 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:49,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 454 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:12:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-02-09 01:12:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 391. [2022-02-09 01:12:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 2.4307692307692306) internal successors, (948), 390 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 948 transitions. [2022-02-09 01:12:49,631 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 948 transitions. Word has length 63 [2022-02-09 01:12:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:49,633 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 948 transitions. [2022-02-09 01:12:49,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 948 transitions. [2022-02-09 01:12:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-09 01:12:49,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:49,636 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] [2022-02-09 01:12:49,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-09 01:12:49,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:49,850 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2085302797, now seen corresponding path program 2 times [2022-02-09 01:12:49,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:49,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695998491] [2022-02-09 01:12:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:49,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:49,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:49,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695998491] [2022-02-09 01:12:49,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695998491] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:49,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86914158] [2022-02-09 01:12:49,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:12:49,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:49,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:49,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:49,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-09 01:12:50,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-09 01:12:50,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:50,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 01:12:50,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:50,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:12:50,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-09 01:12:50,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86914158] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:12:50,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-09 01:12:50,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-02-09 01:12:50,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170941878] [2022-02-09 01:12:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:12:50,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-09 01:12:50,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-09 01:12:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-09 01:12:50,268 INFO L87 Difference]: Start difference. First operand 391 states and 948 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:50,378 INFO L93 Difference]: Finished difference Result 477 states and 1180 transitions. [2022-02-09 01:12:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-09 01:12:50,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-09 01:12:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:50,384 INFO L225 Difference]: With dead ends: 477 [2022-02-09 01:12:50,384 INFO L226 Difference]: Without dead ends: 477 [2022-02-09 01:12:50,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-02-09 01:12:50,386 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 107 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:50,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 174 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:12:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-02-09 01:12:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 399. [2022-02-09 01:12:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 2.437185929648241) internal successors, (970), 398 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 970 transitions. [2022-02-09 01:12:50,401 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 970 transitions. Word has length 63 [2022-02-09 01:12:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:50,403 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 970 transitions. [2022-02-09 01:12:50,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 970 transitions. [2022-02-09 01:12:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-09 01:12:50,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:50,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:50,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:50,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-09 01:12:50,620 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -60630437, now seen corresponding path program 1 times [2022-02-09 01:12:50,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:50,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349939514] [2022-02-09 01:12:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:50,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:50,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:50,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349939514] [2022-02-09 01:12:50,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349939514] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:50,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622062825] [2022-02-09 01:12:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:50,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:50,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:50,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-09 01:12:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:50,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-09 01:12:50,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:50,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:51,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622062825] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:51,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:51,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2022-02-09 01:12:51,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060394292] [2022-02-09 01:12:51,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:51,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-09 01:12:51,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:51,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-09 01:12:51,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-09 01:12:51,533 INFO L87 Difference]: Start difference. First operand 399 states and 970 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:51,594 INFO L93 Difference]: Finished difference Result 896 states and 2243 transitions. [2022-02-09 01:12:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-09 01:12:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-02-09 01:12:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:51,600 INFO L225 Difference]: With dead ends: 896 [2022-02-09 01:12:51,600 INFO L226 Difference]: Without dead ends: 752 [2022-02-09 01:12:51,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-09 01:12:51,601 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 111 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:51,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 358 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:12:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-02-09 01:12:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 606. [2022-02-09 01:12:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 2.5355371900826444) internal successors, (1534), 605 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1534 transitions. [2022-02-09 01:12:51,621 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1534 transitions. Word has length 65 [2022-02-09 01:12:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:51,621 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1534 transitions. [2022-02-09 01:12:51,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1534 transitions. [2022-02-09 01:12:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-09 01:12:51,624 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:51,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:51,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:51,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:51,856 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1922671995, now seen corresponding path program 2 times [2022-02-09 01:12:51,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:51,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156951117] [2022-02-09 01:12:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:51,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:52,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:52,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156951117] [2022-02-09 01:12:52,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156951117] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:52,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711779429] [2022-02-09 01:12:52,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:12:52,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:52,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:52,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-09 01:12:52,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:12:52,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:52,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-09 01:12:52,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:52,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:52,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711779429] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:52,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:52,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2022-02-09 01:12:52,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271235002] [2022-02-09 01:12:52,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:52,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-09 01:12:52,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-09 01:12:52,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-09 01:12:52,374 INFO L87 Difference]: Start difference. First operand 606 states and 1534 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:52,492 INFO L93 Difference]: Finished difference Result 755 states and 1922 transitions. [2022-02-09 01:12:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-09 01:12:52,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-02-09 01:12:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:52,496 INFO L225 Difference]: With dead ends: 755 [2022-02-09 01:12:52,497 INFO L226 Difference]: Without dead ends: 740 [2022-02-09 01:12:52,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-02-09 01:12:52,499 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 57 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:52,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 356 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:12:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-02-09 01:12:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 598. [2022-02-09 01:12:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 2.5326633165829144) internal successors, (1512), 597 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1512 transitions. [2022-02-09 01:12:52,518 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1512 transitions. Word has length 65 [2022-02-09 01:12:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:52,519 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1512 transitions. [2022-02-09 01:12:52,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1512 transitions. [2022-02-09 01:12:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:12:52,521 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:52,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:52,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:52,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:52,748 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1971137093, now seen corresponding path program 3 times [2022-02-09 01:12:52,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:52,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117135446] [2022-02-09 01:12:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:52,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:52,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:52,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117135446] [2022-02-09 01:12:52,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117135446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:52,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618360930] [2022-02-09 01:12:52,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:12:52,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:52,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:52,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:52,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-09 01:12:52,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:12:52,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:52,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:12:52,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:53,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:53,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618360930] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:53,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:53,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2022-02-09 01:12:53,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944826084] [2022-02-09 01:12:53,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:53,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-09 01:12:53,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-09 01:12:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-02-09 01:12:53,336 INFO L87 Difference]: Start difference. First operand 598 states and 1512 transitions. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:54,444 INFO L93 Difference]: Finished difference Result 1484 states and 3857 transitions. [2022-02-09 01:12:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-09 01:12:54,445 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:12:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:54,453 INFO L225 Difference]: With dead ends: 1484 [2022-02-09 01:12:54,453 INFO L226 Difference]: Without dead ends: 1469 [2022-02-09 01:12:54,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=748, Invalid=3542, Unknown=0, NotChecked=0, Total=4290 [2022-02-09 01:12:54,456 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 569 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:54,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1755 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:12:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-02-09 01:12:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 680. [2022-02-09 01:12:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 2.552282768777614) internal successors, (1733), 679 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1733 transitions. [2022-02-09 01:12:54,486 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1733 transitions. Word has length 70 [2022-02-09 01:12:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:54,486 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 1733 transitions. [2022-02-09 01:12:54,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1733 transitions. [2022-02-09 01:12:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:12:54,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:54,489 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:54,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-09 01:12:54,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:54,704 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 481657637, now seen corresponding path program 4 times [2022-02-09 01:12:54,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:54,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748449410] [2022-02-09 01:12:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:54,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:54,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:54,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748449410] [2022-02-09 01:12:54,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748449410] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:54,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259401988] [2022-02-09 01:12:54,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:12:54,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:54,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:54,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:54,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-09 01:12:54,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:12:54,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:54,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-09 01:12:54,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:55,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:55,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259401988] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:55,482 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:55,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2022-02-09 01:12:55,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551882294] [2022-02-09 01:12:55,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:55,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 01:12:55,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:55,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 01:12:55,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-02-09 01:12:55,485 INFO L87 Difference]: Start difference. First operand 680 states and 1733 transitions. Second operand has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:56,215 INFO L93 Difference]: Finished difference Result 1453 states and 3763 transitions. [2022-02-09 01:12:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 01:12:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 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 70 [2022-02-09 01:12:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:56,224 INFO L225 Difference]: With dead ends: 1453 [2022-02-09 01:12:56,224 INFO L226 Difference]: Without dead ends: 1438 [2022-02-09 01:12:56,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=624, Invalid=2456, Unknown=0, NotChecked=0, Total=3080 [2022-02-09 01:12:56,226 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 544 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:56,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1050 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:12:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-02-09 01:12:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 696. [2022-02-09 01:12:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 2.5568345323741006) internal successors, (1777), 695 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1777 transitions. [2022-02-09 01:12:56,256 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1777 transitions. Word has length 70 [2022-02-09 01:12:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:56,256 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1777 transitions. [2022-02-09 01:12:56,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1777 transitions. [2022-02-09 01:12:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:12:56,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:56,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:56,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:56,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:56,476 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1740204831, now seen corresponding path program 5 times [2022-02-09 01:12:56,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:56,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851235809] [2022-02-09 01:12:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:56,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:56,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:56,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851235809] [2022-02-09 01:12:56,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851235809] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:56,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320151356] [2022-02-09 01:12:56,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:12:56,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:56,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:56,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-09 01:12:56,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:12:56,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:56,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:12:56,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:56,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:57,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320151356] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:57,292 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:57,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-09 01:12:57,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656756404] [2022-02-09 01:12:57,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:57,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:12:57,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:12:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:12:57,295 INFO L87 Difference]: Start difference. First operand 696 states and 1777 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:12:58,722 INFO L93 Difference]: Finished difference Result 2222 states and 5753 transitions. [2022-02-09 01:12:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-09 01:12:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:12:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:12:58,733 INFO L225 Difference]: With dead ends: 2222 [2022-02-09 01:12:58,734 INFO L226 Difference]: Without dead ends: 2207 [2022-02-09 01:12:58,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1453, Invalid=5519, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 01:12:58,737 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 652 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:12:58,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 1504 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:12:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-02-09 01:12:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 736. [2022-02-09 01:12:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.578231292517007) internal successors, (1895), 735 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1895 transitions. [2022-02-09 01:12:58,771 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1895 transitions. Word has length 70 [2022-02-09 01:12:58,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:12:58,771 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1895 transitions. [2022-02-09 01:12:58,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:12:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1895 transitions. [2022-02-09 01:12:58,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:12:58,773 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:12:58,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:12:58,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-09 01:12:58,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:58,998 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:12:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:12:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1015878651, now seen corresponding path program 6 times [2022-02-09 01:12:58,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:12:58,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966670052] [2022-02-09 01:12:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:12:58,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:12:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:12:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:59,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:12:59,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966670052] [2022-02-09 01:12:59,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966670052] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:12:59,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043274272] [2022-02-09 01:12:59,099 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:12:59,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:12:59,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:12:59,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:12:59,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-09 01:12:59,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:12:59,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:12:59,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:12:59,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:12:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:59,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:12:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:12:59,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043274272] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:12:59,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:12:59,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-09 01:12:59,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559251404] [2022-02-09 01:12:59,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:12:59,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:12:59,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:12:59,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:12:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:12:59,723 INFO L87 Difference]: Start difference. First operand 736 states and 1895 transitions. Second operand has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:00,425 INFO L93 Difference]: Finished difference Result 1526 states and 3939 transitions. [2022-02-09 01:13:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 01:13:00,426 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:00,433 INFO L225 Difference]: With dead ends: 1526 [2022-02-09 01:13:00,434 INFO L226 Difference]: Without dead ends: 1502 [2022-02-09 01:13:00,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=620, Invalid=2136, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 01:13:00,435 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 854 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:00,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 1014 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:00,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-02-09 01:13:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 736. [2022-02-09 01:13:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.5673469387755103) internal successors, (1887), 735 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1887 transitions. [2022-02-09 01:13:00,475 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1887 transitions. Word has length 70 [2022-02-09 01:13:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:00,475 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1887 transitions. [2022-02-09 01:13:00,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1887 transitions. [2022-02-09 01:13:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:00,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:00,478 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:00,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:00,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-09 01:13:00,702 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:00,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash 221980705, now seen corresponding path program 7 times [2022-02-09 01:13:00,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:00,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525312692] [2022-02-09 01:13:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:00,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:00,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525312692] [2022-02-09 01:13:00,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525312692] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:00,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748698683] [2022-02-09 01:13:00,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:00,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:00,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:00,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-09 01:13:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:00,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:00,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:01,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:01,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748698683] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:01,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:01,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-09 01:13:01,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629149852] [2022-02-09 01:13:01,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:01,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 01:13:01,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 01:13:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-09 01:13:01,416 INFO L87 Difference]: Start difference. First operand 736 states and 1887 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:02,662 INFO L93 Difference]: Finished difference Result 2307 states and 5966 transitions. [2022-02-09 01:13:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-09 01:13:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:02,672 INFO L225 Difference]: With dead ends: 2307 [2022-02-09 01:13:02,673 INFO L226 Difference]: Without dead ends: 2277 [2022-02-09 01:13:02,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1262, Invalid=4900, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 01:13:02,675 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 513 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:02,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1465 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-02-09 01:13:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 900. [2022-02-09 01:13:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 2.6407119021134595) internal successors, (2374), 899 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2374 transitions. [2022-02-09 01:13:02,718 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2374 transitions. Word has length 70 [2022-02-09 01:13:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:02,719 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2374 transitions. [2022-02-09 01:13:02,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:02,719 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2374 transitions. [2022-02-09 01:13:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:02,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:02,721 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:02,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:02,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:02,927 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:02,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1316903109, now seen corresponding path program 8 times [2022-02-09 01:13:02,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:02,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019844592] [2022-02-09 01:13:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:02,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:03,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:03,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019844592] [2022-02-09 01:13:03,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019844592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:03,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296552464] [2022-02-09 01:13:03,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:03,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:03,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:03,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-09 01:13:03,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:03,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:03,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:03,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:03,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:03,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296552464] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:03,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:03,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-09 01:13:03,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530684805] [2022-02-09 01:13:03,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:03,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 01:13:03,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 01:13:03,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-02-09 01:13:03,622 INFO L87 Difference]: Start difference. First operand 900 states and 2374 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:04,382 INFO L93 Difference]: Finished difference Result 2098 states and 5385 transitions. [2022-02-09 01:13:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 01:13:04,383 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:04,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:04,391 INFO L225 Difference]: With dead ends: 2098 [2022-02-09 01:13:04,391 INFO L226 Difference]: Without dead ends: 2050 [2022-02-09 01:13:04,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=663, Invalid=2529, Unknown=0, NotChecked=0, Total=3192 [2022-02-09 01:13:04,393 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 594 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:04,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1103 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-02-09 01:13:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 916. [2022-02-09 01:13:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 2.625136612021858) internal successors, (2402), 915 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2402 transitions. [2022-02-09 01:13:04,426 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2402 transitions. Word has length 70 [2022-02-09 01:13:04,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:04,426 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2402 transitions. [2022-02-09 01:13:04,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2402 transitions. [2022-02-09 01:13:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:04,429 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:04,429 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:04,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:04,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-09 01:13:04,643 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:04,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1472197725, now seen corresponding path program 9 times [2022-02-09 01:13:04,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:04,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426378138] [2022-02-09 01:13:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:04,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:04,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:04,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426378138] [2022-02-09 01:13:04,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426378138] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:04,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165471507] [2022-02-09 01:13:04,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:04,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:04,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:04,750 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:04,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-09 01:13:04,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:13:04,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:04,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:04,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:05,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:05,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165471507] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:05,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:05,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:05,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894421656] [2022-02-09 01:13:05,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:05,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:05,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:05,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:05,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:05,349 INFO L87 Difference]: Start difference. First operand 916 states and 2402 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:05,726 INFO L93 Difference]: Finished difference Result 1287 states and 3381 transitions. [2022-02-09 01:13:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 01:13:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:05,732 INFO L225 Difference]: With dead ends: 1287 [2022-02-09 01:13:05,732 INFO L226 Difference]: Without dead ends: 1251 [2022-02-09 01:13:05,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:13:05,734 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 355 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:05,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 1317 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:05,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-02-09 01:13:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 928. [2022-02-09 01:13:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 2.626752966558792) internal successors, (2435), 927 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 2435 transitions. [2022-02-09 01:13:05,758 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 2435 transitions. Word has length 70 [2022-02-09 01:13:05,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:05,758 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 2435 transitions. [2022-02-09 01:13:05,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:05,758 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2435 transitions. [2022-02-09 01:13:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:05,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:05,761 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:05,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:05,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-09 01:13:05,988 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash -313771491, now seen corresponding path program 10 times [2022-02-09 01:13:05,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:05,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268755909] [2022-02-09 01:13:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:05,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:06,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:06,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268755909] [2022-02-09 01:13:06,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268755909] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:06,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406458454] [2022-02-09 01:13:06,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:06,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:06,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:06,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:06,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-09 01:13:06,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:06,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:06,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:06,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:06,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:06,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406458454] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:06,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:06,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:06,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814990651] [2022-02-09 01:13:06,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:06,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:06,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:06,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:06,715 INFO L87 Difference]: Start difference. First operand 928 states and 2435 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:07,145 INFO L93 Difference]: Finished difference Result 1677 states and 4444 transitions. [2022-02-09 01:13:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 01:13:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:07,153 INFO L225 Difference]: With dead ends: 1677 [2022-02-09 01:13:07,153 INFO L226 Difference]: Without dead ends: 1641 [2022-02-09 01:13:07,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=1320, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:13:07,155 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 350 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:07,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1181 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:07,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-02-09 01:13:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 936. [2022-02-09 01:13:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 2.627807486631016) internal successors, (2457), 935 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 2457 transitions. [2022-02-09 01:13:07,181 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 2457 transitions. Word has length 70 [2022-02-09 01:13:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:07,181 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 2457 transitions. [2022-02-09 01:13:07,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 2457 transitions. [2022-02-09 01:13:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:07,184 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:07,184 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:07,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:07,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-09 01:13:07,409 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338203, now seen corresponding path program 11 times [2022-02-09 01:13:07,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:07,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911114478] [2022-02-09 01:13:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:07,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:07,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:07,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911114478] [2022-02-09 01:13:07,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911114478] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:07,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777659579] [2022-02-09 01:13:07,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:13:07,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:07,494 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:07,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-09 01:13:07,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:13:07,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:07,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:07,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:07,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:08,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777659579] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:08,078 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:08,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-09 01:13:08,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338102333] [2022-02-09 01:13:08,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:08,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 01:13:08,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 01:13:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-02-09 01:13:08,079 INFO L87 Difference]: Start difference. First operand 936 states and 2457 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:09,154 INFO L93 Difference]: Finished difference Result 3265 states and 8631 transitions. [2022-02-09 01:13:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-09 01:13:09,154 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:09,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:09,166 INFO L225 Difference]: With dead ends: 3265 [2022-02-09 01:13:09,166 INFO L226 Difference]: Without dead ends: 3235 [2022-02-09 01:13:09,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1136, Invalid=4120, Unknown=0, NotChecked=0, Total=5256 [2022-02-09 01:13:09,169 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 702 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:09,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1801 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:13:09,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-02-09 01:13:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1344. [2022-02-09 01:13:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 2.7513030528667164) internal successors, (3695), 1343 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3695 transitions. [2022-02-09 01:13:09,220 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3695 transitions. Word has length 70 [2022-02-09 01:13:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:09,220 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 3695 transitions. [2022-02-09 01:13:09,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3695 transitions. [2022-02-09 01:13:09,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:09,225 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:09,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:09,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:09,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-09 01:13:09,448 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1338745279, now seen corresponding path program 12 times [2022-02-09 01:13:09,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:09,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450400658] [2022-02-09 01:13:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:09,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:09,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:09,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450400658] [2022-02-09 01:13:09,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450400658] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:09,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756807290] [2022-02-09 01:13:09,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:09,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:09,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:09,528 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:09,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-09 01:13:09,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:13:09,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:09,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:09,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:09,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:10,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756807290] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:10,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:10,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-09 01:13:10,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747185659] [2022-02-09 01:13:10,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:10,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 01:13:10,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 01:13:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-02-09 01:13:10,071 INFO L87 Difference]: Start difference. First operand 1344 states and 3695 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:10,841 INFO L93 Difference]: Finished difference Result 3079 states and 8156 transitions. [2022-02-09 01:13:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-09 01:13:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:10,851 INFO L225 Difference]: With dead ends: 3079 [2022-02-09 01:13:10,851 INFO L226 Difference]: Without dead ends: 3031 [2022-02-09 01:13:10,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2022-02-09 01:13:10,855 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 606 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:10,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1486 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-02-09 01:13:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1340. [2022-02-09 01:13:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 2.745332337565347) internal successors, (3676), 1339 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 3676 transitions. [2022-02-09 01:13:10,897 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 3676 transitions. Word has length 70 [2022-02-09 01:13:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:10,897 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 3676 transitions. [2022-02-09 01:13:10,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 3676 transitions. [2022-02-09 01:13:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:10,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:10,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:10,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-02-09 01:13:11,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:11,116 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:11,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash -167121183, now seen corresponding path program 13 times [2022-02-09 01:13:11,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:11,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151266561] [2022-02-09 01:13:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:11,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:11,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:11,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151266561] [2022-02-09 01:13:11,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151266561] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:11,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10742371] [2022-02-09 01:13:11,201 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:11,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:11,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:11,202 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:11,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-09 01:13:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:11,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:11,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:11,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10742371] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:11,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:11,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:11,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844440821] [2022-02-09 01:13:11,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:11,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:11,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:11,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:11,824 INFO L87 Difference]: Start difference. First operand 1340 states and 3676 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:12,880 INFO L93 Difference]: Finished difference Result 3774 states and 10220 transitions. [2022-02-09 01:13:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-09 01:13:12,880 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:12,890 INFO L225 Difference]: With dead ends: 3774 [2022-02-09 01:13:12,890 INFO L226 Difference]: Without dead ends: 3738 [2022-02-09 01:13:12,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=906, Invalid=3786, Unknown=0, NotChecked=0, Total=4692 [2022-02-09 01:13:12,892 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 782 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:12,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1513 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:12,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2022-02-09 01:13:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2108. [2022-02-09 01:13:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.815377313716184) internal successors, (5932), 2107 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5932 transitions. [2022-02-09 01:13:12,956 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5932 transitions. Word has length 70 [2022-02-09 01:13:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:12,956 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5932 transitions. [2022-02-09 01:13:12,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5932 transitions. [2022-02-09 01:13:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:12,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:12,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:12,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-02-09 01:13:13,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-09 01:13:13,188 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:13,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1676534515, now seen corresponding path program 14 times [2022-02-09 01:13:13,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:13,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375301271] [2022-02-09 01:13:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:13,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:13,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:13,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375301271] [2022-02-09 01:13:13,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375301271] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:13,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070078942] [2022-02-09 01:13:13,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:13,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:13,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:13,270 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:13,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-09 01:13:13,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:13,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:13,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:13,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:13,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:13,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070078942] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:13,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:13,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:13,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870408003] [2022-02-09 01:13:13,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:13,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:13,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:13,810 INFO L87 Difference]: Start difference. First operand 2108 states and 5932 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:14,125 INFO L93 Difference]: Finished difference Result 2346 states and 6507 transitions. [2022-02-09 01:13:14,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 01:13:14,126 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:14,132 INFO L225 Difference]: With dead ends: 2346 [2022-02-09 01:13:14,132 INFO L226 Difference]: Without dead ends: 2298 [2022-02-09 01:13:14,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:13:14,134 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 325 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:14,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 899 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:13:14,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-02-09 01:13:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2108. [2022-02-09 01:13:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.813478879924063) internal successors, (5928), 2107 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5928 transitions. [2022-02-09 01:13:14,180 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5928 transitions. Word has length 70 [2022-02-09 01:13:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:14,180 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5928 transitions. [2022-02-09 01:13:14,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5928 transitions. [2022-02-09 01:13:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:14,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:14,192 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:14,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:14,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-09 01:13:14,416 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash -570914211, now seen corresponding path program 15 times [2022-02-09 01:13:14,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:14,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112739335] [2022-02-09 01:13:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:14,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:14,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:14,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112739335] [2022-02-09 01:13:14,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112739335] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:14,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086431186] [2022-02-09 01:13:14,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:14,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:14,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:14,501 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:14,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-09 01:13:14,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:13:14,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:14,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:14,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:14,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:14,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086431186] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:14,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:14,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:14,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485029900] [2022-02-09 01:13:14,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:14,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:14,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:14,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:14,980 INFO L87 Difference]: Start difference. First operand 2108 states and 5928 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:15,567 INFO L93 Difference]: Finished difference Result 3337 states and 9298 transitions. [2022-02-09 01:13:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-09 01:13:15,567 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:15,575 INFO L225 Difference]: With dead ends: 3337 [2022-02-09 01:13:15,576 INFO L226 Difference]: Without dead ends: 3253 [2022-02-09 01:13:15,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=462, Invalid=1988, Unknown=0, NotChecked=0, Total=2450 [2022-02-09 01:13:15,577 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 384 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:15,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1098 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-02-09 01:13:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2316. [2022-02-09 01:13:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 2.819870410367171) internal successors, (6528), 2315 states have internal predecessors, (6528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 6528 transitions. [2022-02-09 01:13:15,661 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 6528 transitions. Word has length 70 [2022-02-09 01:13:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:15,662 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 6528 transitions. [2022-02-09 01:13:15,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 6528 transitions. [2022-02-09 01:13:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:15,667 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:15,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:15,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:15,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:15,888 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -424263903, now seen corresponding path program 16 times [2022-02-09 01:13:15,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:15,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494324743] [2022-02-09 01:13:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:15,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:15,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:15,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494324743] [2022-02-09 01:13:15,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494324743] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:15,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039880398] [2022-02-09 01:13:15,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:15,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:15,967 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:15,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-09 01:13:16,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:16,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:16,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:16,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:16,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:16,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039880398] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:16,477 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:16,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:16,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036265407] [2022-02-09 01:13:16,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:16,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:16,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:16,478 INFO L87 Difference]: Start difference. First operand 2316 states and 6528 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:17,176 INFO L93 Difference]: Finished difference Result 4519 states and 12420 transitions. [2022-02-09 01:13:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-09 01:13:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:17,186 INFO L225 Difference]: With dead ends: 4519 [2022-02-09 01:13:17,186 INFO L226 Difference]: Without dead ends: 4435 [2022-02-09 01:13:17,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=650, Invalid=2542, Unknown=0, NotChecked=0, Total=3192 [2022-02-09 01:13:17,188 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 595 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:17,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 1345 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2022-02-09 01:13:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 1840. [2022-02-09 01:13:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 2.809679173463839) internal successors, (5167), 1839 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 5167 transitions. [2022-02-09 01:13:17,242 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 5167 transitions. Word has length 70 [2022-02-09 01:13:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:17,242 INFO L470 AbstractCegarLoop]: Abstraction has 1840 states and 5167 transitions. [2022-02-09 01:13:17,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 5167 transitions. [2022-02-09 01:13:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:17,246 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:17,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:17,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:17,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:17,474 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:17,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:17,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1419391795, now seen corresponding path program 17 times [2022-02-09 01:13:17,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:17,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243105982] [2022-02-09 01:13:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:17,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:17,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:17,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243105982] [2022-02-09 01:13:17,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243105982] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:17,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599267119] [2022-02-09 01:13:17,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:13:17,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:17,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:17,584 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:17,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-09 01:13:17,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:13:17,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:17,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-09 01:13:17,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:17,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:18,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599267119] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:18,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:18,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2022-02-09 01:13:18,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012564111] [2022-02-09 01:13:18,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:18,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:13:18,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:13:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:13:18,038 INFO L87 Difference]: Start difference. First operand 1840 states and 5167 transitions. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:18,318 INFO L93 Difference]: Finished difference Result 2482 states and 6932 transitions. [2022-02-09 01:13:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-09 01:13:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:18,322 INFO L225 Difference]: With dead ends: 2482 [2022-02-09 01:13:18,322 INFO L226 Difference]: Without dead ends: 2434 [2022-02-09 01:13:18,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:18,323 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 281 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:18,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 702 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:13:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-02-09 01:13:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1832. [2022-02-09 01:13:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 2.8099399235390496) internal successors, (5145), 1831 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 5145 transitions. [2022-02-09 01:13:18,356 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 5145 transitions. Word has length 70 [2022-02-09 01:13:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:18,357 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 5145 transitions. [2022-02-09 01:13:18,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 5145 transitions. [2022-02-09 01:13:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:18,361 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:18,361 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:18,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:18,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:18,574 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:18,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash -490468571, now seen corresponding path program 18 times [2022-02-09 01:13:18,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:18,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141329257] [2022-02-09 01:13:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:18,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:18,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:18,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141329257] [2022-02-09 01:13:18,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141329257] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:18,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459419300] [2022-02-09 01:13:18,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:18,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:18,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:18,694 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:18,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-09 01:13:18,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 01:13:18,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:18,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-09 01:13:18,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:18,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:19,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459419300] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:19,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:19,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2022-02-09 01:13:19,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985860591] [2022-02-09 01:13:19,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:19,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 01:13:19,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:19,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 01:13:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-02-09 01:13:19,208 INFO L87 Difference]: Start difference. First operand 1832 states and 5145 transitions. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:19,907 INFO L93 Difference]: Finished difference Result 2986 states and 8110 transitions. [2022-02-09 01:13:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-09 01:13:19,907 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:19,912 INFO L225 Difference]: With dead ends: 2986 [2022-02-09 01:13:19,912 INFO L226 Difference]: Without dead ends: 2956 [2022-02-09 01:13:19,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=557, Invalid=2095, Unknown=0, NotChecked=0, Total=2652 [2022-02-09 01:13:19,914 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 423 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:19,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1388 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-02-09 01:13:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2000. [2022-02-09 01:13:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8269134567283642) internal successors, (5651), 1999 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5651 transitions. [2022-02-09 01:13:19,952 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5651 transitions. Word has length 70 [2022-02-09 01:13:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:19,953 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5651 transitions. [2022-02-09 01:13:19,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5651 transitions. [2022-02-09 01:13:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:19,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:19,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:19,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-02-09 01:13:20,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-02-09 01:13:20,171 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 43752443, now seen corresponding path program 19 times [2022-02-09 01:13:20,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:20,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266572381] [2022-02-09 01:13:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:20,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:20,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:20,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266572381] [2022-02-09 01:13:20,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266572381] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:20,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974897744] [2022-02-09 01:13:20,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:20,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:20,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:20,268 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:20,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-09 01:13:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:20,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:20,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:20,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:20,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974897744] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:20,768 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:20,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-09 01:13:20,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22710089] [2022-02-09 01:13:20,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:20,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:13:20,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:13:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:13:20,769 INFO L87 Difference]: Start difference. First operand 2000 states and 5651 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:21,165 INFO L93 Difference]: Finished difference Result 2623 states and 7248 transitions. [2022-02-09 01:13:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 01:13:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:21,170 INFO L225 Difference]: With dead ends: 2623 [2022-02-09 01:13:21,170 INFO L226 Difference]: Without dead ends: 2575 [2022-02-09 01:13:21,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 01:13:21,171 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 371 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:21,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 878 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2022-02-09 01:13:21,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2184. [2022-02-09 01:13:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.836921667430142) internal successors, (6193), 2183 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6193 transitions. [2022-02-09 01:13:21,213 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6193 transitions. Word has length 70 [2022-02-09 01:13:21,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:21,213 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6193 transitions. [2022-02-09 01:13:21,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:21,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6193 transitions. [2022-02-09 01:13:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:21,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:21,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:21,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:21,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-09 01:13:21,443 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:21,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:21,443 INFO L85 PathProgramCache]: Analyzing trace with hash 185043233, now seen corresponding path program 20 times [2022-02-09 01:13:21,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:21,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584294674] [2022-02-09 01:13:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:21,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:21,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:21,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584294674] [2022-02-09 01:13:21,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584294674] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:21,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272340229] [2022-02-09 01:13:21,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:21,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:21,532 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:21,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-09 01:13:21,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:21,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:21,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:21,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:21,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:21,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:13:22,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272340229] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:22,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:22,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-09 01:13:22,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157402835] [2022-02-09 01:13:22,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:22,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:13:22,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:22,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:13:22,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:13:22,023 INFO L87 Difference]: Start difference. First operand 2184 states and 6193 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:22,548 INFO L93 Difference]: Finished difference Result 3459 states and 9481 transitions. [2022-02-09 01:13:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-09 01:13:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:22,554 INFO L225 Difference]: With dead ends: 3459 [2022-02-09 01:13:22,554 INFO L226 Difference]: Without dead ends: 3429 [2022-02-09 01:13:22,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=494, Invalid=1858, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 01:13:22,555 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 377 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:22,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1079 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2022-02-09 01:13:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2476. [2022-02-09 01:13:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2475 states have (on average 2.850909090909091) internal successors, (7056), 2475 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 7056 transitions. [2022-02-09 01:13:22,602 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 7056 transitions. Word has length 70 [2022-02-09 01:13:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:22,602 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 7056 transitions. [2022-02-09 01:13:22,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 7056 transitions. [2022-02-09 01:13:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:22,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:22,607 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:22,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-09 01:13:22,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:22,808 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1353840581, now seen corresponding path program 21 times [2022-02-09 01:13:22,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:22,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023134285] [2022-02-09 01:13:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:22,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:22,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:22,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023134285] [2022-02-09 01:13:22,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023134285] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:22,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545228089] [2022-02-09 01:13:22,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:22,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:22,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:22,896 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:22,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-09 01:13:22,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:13:22,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:22,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:22,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:23,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:23,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545228089] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:23,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:23,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-09 01:13:23,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547728722] [2022-02-09 01:13:23,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:23,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:13:23,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:23,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:13:23,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:13:23,328 INFO L87 Difference]: Start difference. First operand 2476 states and 7056 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:23,854 INFO L93 Difference]: Finished difference Result 3275 states and 9012 transitions. [2022-02-09 01:13:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 01:13:23,854 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:23,859 INFO L225 Difference]: With dead ends: 3275 [2022-02-09 01:13:23,860 INFO L226 Difference]: Without dead ends: 3227 [2022-02-09 01:13:23,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 01:13:23,861 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 298 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:23,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1355 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-02-09 01:13:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2344. [2022-02-09 01:13:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-09 01:13:23,900 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-09 01:13:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:23,900 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-09 01:13:23,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-09 01:13:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:23,905 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:23,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:23,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:24,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:24,130 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1435260253, now seen corresponding path program 22 times [2022-02-09 01:13:24,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:24,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436554754] [2022-02-09 01:13:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:24,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:24,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:24,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436554754] [2022-02-09 01:13:24,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436554754] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:24,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527101698] [2022-02-09 01:13:24,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:24,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:24,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:24,218 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:24,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-09 01:13:24,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:24,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:24,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:24,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:24,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:24,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527101698] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:24,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:24,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:24,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528324736] [2022-02-09 01:13:24,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:24,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:24,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:24,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:24,662 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:25,087 INFO L93 Difference]: Finished difference Result 2869 states and 7974 transitions. [2022-02-09 01:13:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 01:13:25,087 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:25,092 INFO L225 Difference]: With dead ends: 2869 [2022-02-09 01:13:25,092 INFO L226 Difference]: Without dead ends: 2797 [2022-02-09 01:13:25,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1620, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 01:13:25,093 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 295 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:25,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1235 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-02-09 01:13:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2348. [2022-02-09 01:13:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2347 states have (on average 2.8410737111205795) internal successors, (6668), 2347 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 6668 transitions. [2022-02-09 01:13:25,134 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 6668 transitions. Word has length 70 [2022-02-09 01:13:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:25,134 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 6668 transitions. [2022-02-09 01:13:25,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 6668 transitions. [2022-02-09 01:13:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:25,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:25,141 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:25,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:25,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-09 01:13:25,355 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash 331693541, now seen corresponding path program 23 times [2022-02-09 01:13:25,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:25,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36105903] [2022-02-09 01:13:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:25,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:25,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:25,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36105903] [2022-02-09 01:13:25,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36105903] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:25,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809491566] [2022-02-09 01:13:25,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:13:25,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:25,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:25,456 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:25,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-09 01:13:25,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:13:25,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:25,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:25,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:25,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:13:25,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809491566] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:25,868 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:25,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-09 01:13:25,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712571698] [2022-02-09 01:13:25,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:25,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:13:25,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:13:25,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:13:25,869 INFO L87 Difference]: Start difference. First operand 2348 states and 6668 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:26,529 INFO L93 Difference]: Finished difference Result 3827 states and 10486 transitions. [2022-02-09 01:13:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-09 01:13:26,530 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:26,537 INFO L225 Difference]: With dead ends: 3827 [2022-02-09 01:13:26,537 INFO L226 Difference]: Without dead ends: 3797 [2022-02-09 01:13:26,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=562, Invalid=1988, Unknown=0, NotChecked=0, Total=2550 [2022-02-09 01:13:26,538 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 393 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:26,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1460 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:13:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-02-09 01:13:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2672. [2022-02-09 01:13:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2671 states have (on average 2.868962935230251) internal successors, (7663), 2671 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 7663 transitions. [2022-02-09 01:13:26,597 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 7663 transitions. Word has length 70 [2022-02-09 01:13:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:26,598 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 7663 transitions. [2022-02-09 01:13:26,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 7663 transitions. [2022-02-09 01:13:26,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:26,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:26,604 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:26,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:26,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-09 01:13:26,820 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:26,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1207190273, now seen corresponding path program 24 times [2022-02-09 01:13:26,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:26,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190051057] [2022-02-09 01:13:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:26,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:26,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:26,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190051057] [2022-02-09 01:13:26,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190051057] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:26,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383908784] [2022-02-09 01:13:26,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:26,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:26,908 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:26,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-09 01:13:26,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:13:26,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:26,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:26,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:27,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:27,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383908784] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:27,383 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:27,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-09 01:13:27,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138200838] [2022-02-09 01:13:27,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:27,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:13:27,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:27,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:13:27,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:13:27,384 INFO L87 Difference]: Start difference. First operand 2672 states and 7663 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:27,952 INFO L93 Difference]: Finished difference Result 3690 states and 10156 transitions. [2022-02-09 01:13:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-09 01:13:27,952 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:27,960 INFO L225 Difference]: With dead ends: 3690 [2022-02-09 01:13:27,960 INFO L226 Difference]: Without dead ends: 3642 [2022-02-09 01:13:27,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=418, Invalid=1562, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 01:13:27,961 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 512 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:27,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1004 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2022-02-09 01:13:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 2464. [2022-02-09 01:13:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 2.8400324807145756) internal successors, (6995), 2463 states have internal predecessors, (6995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 6995 transitions. [2022-02-09 01:13:28,019 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 6995 transitions. Word has length 70 [2022-02-09 01:13:28,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:28,019 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 6995 transitions. [2022-02-09 01:13:28,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 6995 transitions. [2022-02-09 01:13:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:28,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:28,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:28,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:28,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-09 01:13:28,243 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1581910561, now seen corresponding path program 25 times [2022-02-09 01:13:28,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:28,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561349306] [2022-02-09 01:13:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:28,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:28,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:28,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561349306] [2022-02-09 01:13:28,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561349306] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:28,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854511195] [2022-02-09 01:13:28,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:28,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:28,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:28,347 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:28,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-09 01:13:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:28,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:28,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:28,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:28,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854511195] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:28,868 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:28,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:28,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086012004] [2022-02-09 01:13:28,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:28,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:28,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:28,870 INFO L87 Difference]: Start difference. First operand 2464 states and 6995 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:29,483 INFO L93 Difference]: Finished difference Result 3768 states and 10314 transitions. [2022-02-09 01:13:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-09 01:13:29,490 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:29,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:29,496 INFO L225 Difference]: With dead ends: 3768 [2022-02-09 01:13:29,496 INFO L226 Difference]: Without dead ends: 3696 [2022-02-09 01:13:29,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=507, Invalid=2145, Unknown=0, NotChecked=0, Total=2652 [2022-02-09 01:13:29,497 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 506 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:29,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1238 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:13:29,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-02-09 01:13:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2344. [2022-02-09 01:13:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-09 01:13:29,535 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-09 01:13:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:29,535 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-09 01:13:29,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-09 01:13:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-09 01:13:29,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:29,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:29,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-09 01:13:29,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-09 01:13:29,762 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash -869401037, now seen corresponding path program 26 times [2022-02-09 01:13:29,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:29,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153203189] [2022-02-09 01:13:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:29,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:29,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:29,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153203189] [2022-02-09 01:13:29,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153203189] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:29,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601705266] [2022-02-09 01:13:29,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:29,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:29,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:29,844 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:29,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-09 01:13:29,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:29,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:29,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 01:13:29,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:30,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:30,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601705266] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:30,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:30,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-09 01:13:30,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871470999] [2022-02-09 01:13:30,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:30,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 01:13:30,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:30,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 01:13:30,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-02-09 01:13:30,307 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:30,574 INFO L93 Difference]: Finished difference Result 2575 states and 7190 transitions. [2022-02-09 01:13:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 01:13:30,575 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-09 01:13:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:30,579 INFO L225 Difference]: With dead ends: 2575 [2022-02-09 01:13:30,579 INFO L226 Difference]: Without dead ends: 2527 [2022-02-09 01:13:30,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:13:30,580 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 307 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:30,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1025 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:13:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-02-09 01:13:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2344. [2022-02-09 01:13:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-09 01:13:30,610 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-09 01:13:30,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:30,610 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-09 01:13:30,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-09 01:13:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-09 01:13:30,613 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:30,613 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:30,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-09 01:13:30,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:30,814 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:30,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:30,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824483, now seen corresponding path program 27 times [2022-02-09 01:13:30,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:30,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917152035] [2022-02-09 01:13:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:30,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:30,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:30,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917152035] [2022-02-09 01:13:30,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917152035] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:30,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111647267] [2022-02-09 01:13:30,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:30,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:30,883 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:30,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-09 01:13:30,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:13:30,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:30,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:13:30,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:31,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:31,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111647267] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:31,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:31,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 14 [2022-02-09 01:13:31,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803438869] [2022-02-09 01:13:31,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:31,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-09 01:13:31,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-09 01:13:31,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-02-09 01:13:31,442 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:31,618 INFO L93 Difference]: Finished difference Result 5997 states and 17257 transitions. [2022-02-09 01:13:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-09 01:13:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-09 01:13:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:31,628 INFO L225 Difference]: With dead ends: 5997 [2022-02-09 01:13:31,629 INFO L226 Difference]: Without dead ends: 5679 [2022-02-09 01:13:31,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-09 01:13:31,629 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 369 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:31,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 894 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:13:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-02-09 01:13:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 3407. [2022-02-09 01:13:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 2.8755137991779214) internal successors, (9794), 3406 states have internal predecessors, (9794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 9794 transitions. [2022-02-09 01:13:31,699 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 9794 transitions. Word has length 72 [2022-02-09 01:13:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:31,700 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 9794 transitions. [2022-02-09 01:13:31,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 9794 transitions. [2022-02-09 01:13:31,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-09 01:13:31,707 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:31,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:31,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:31,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:31,929 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash -185719417, now seen corresponding path program 28 times [2022-02-09 01:13:31,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:31,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351185920] [2022-02-09 01:13:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:31,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:32,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:32,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351185920] [2022-02-09 01:13:32,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351185920] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:32,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638570410] [2022-02-09 01:13:32,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:32,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:32,029 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:32,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-09 01:13:32,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:32,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:32,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-09 01:13:32,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:32,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:32,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638570410] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:32,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:32,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-09 01:13:32,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682458435] [2022-02-09 01:13:32,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:32,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 01:13:32,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:32,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 01:13:32,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-02-09 01:13:32,863 INFO L87 Difference]: Start difference. First operand 3407 states and 9794 transitions. Second operand has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:34,409 INFO L93 Difference]: Finished difference Result 5692 states and 16101 transitions. [2022-02-09 01:13:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-09 01:13:34,410 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-09 01:13:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:34,421 INFO L225 Difference]: With dead ends: 5692 [2022-02-09 01:13:34,421 INFO L226 Difference]: Without dead ends: 5647 [2022-02-09 01:13:34,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=989, Invalid=5653, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 01:13:34,423 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 557 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:34,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1905 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:13:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2022-02-09 01:13:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 4007. [2022-02-09 01:13:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4006 states have (on average 2.8866699950074888) internal successors, (11564), 4006 states have internal predecessors, (11564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 11564 transitions. [2022-02-09 01:13:34,524 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 11564 transitions. Word has length 72 [2022-02-09 01:13:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:34,525 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 11564 transitions. [2022-02-09 01:13:34,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 11564 transitions. [2022-02-09 01:13:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:34,531 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:34,531 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:34,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:34,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-09 01:13:34,732 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1623433347, now seen corresponding path program 29 times [2022-02-09 01:13:34,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:34,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356352138] [2022-02-09 01:13:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:34,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:34,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:34,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356352138] [2022-02-09 01:13:34,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356352138] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:34,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7298496] [2022-02-09 01:13:34,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:13:34,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:34,895 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:34,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-09 01:13:34,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:13:34,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:34,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:13:34,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:35,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:35,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7298496] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:35,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:35,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 31 [2022-02-09 01:13:35,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606624571] [2022-02-09 01:13:35,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:35,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:13:35,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:13:35,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:13:35,711 INFO L87 Difference]: Start difference. First operand 4007 states and 11564 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:37,380 INFO L93 Difference]: Finished difference Result 7384 states and 21033 transitions. [2022-02-09 01:13:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-09 01:13:37,380 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:13:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:37,394 INFO L225 Difference]: With dead ends: 7384 [2022-02-09 01:13:37,394 INFO L226 Difference]: Without dead ends: 7339 [2022-02-09 01:13:37,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3050 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2222, Invalid=8080, Unknown=0, NotChecked=0, Total=10302 [2022-02-09 01:13:37,396 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1104 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:37,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 2722 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2022-02-09 01:13:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 4149. [2022-02-09 01:13:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4148 states have (on average 2.882835101253616) internal successors, (11958), 4148 states have internal predecessors, (11958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 11958 transitions. [2022-02-09 01:13:37,492 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 11958 transitions. Word has length 77 [2022-02-09 01:13:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:37,492 INFO L470 AbstractCegarLoop]: Abstraction has 4149 states and 11958 transitions. [2022-02-09 01:13:37,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 11958 transitions. [2022-02-09 01:13:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:37,501 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:37,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:37,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-09 01:13:37,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:37,702 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1870223975, now seen corresponding path program 30 times [2022-02-09 01:13:37,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:37,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488986699] [2022-02-09 01:13:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:37,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:37,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:37,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488986699] [2022-02-09 01:13:37,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488986699] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:37,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077096101] [2022-02-09 01:13:37,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:37,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:37,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:37,844 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:37,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-09 01:13:37,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:13:37,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:37,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:13:37,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:38,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:38,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077096101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:38,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:38,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-02-09 01:13:38,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975216260] [2022-02-09 01:13:38,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:38,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:13:38,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:38,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:13:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:13:38,539 INFO L87 Difference]: Start difference. First operand 4149 states and 11958 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:40,485 INFO L93 Difference]: Finished difference Result 7597 states and 21455 transitions. [2022-02-09 01:13:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-09 01:13:40,487 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:13:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:40,501 INFO L225 Difference]: With dead ends: 7597 [2022-02-09 01:13:40,501 INFO L226 Difference]: Without dead ends: 7552 [2022-02-09 01:13:40,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3856 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1951, Invalid=10481, Unknown=0, NotChecked=0, Total=12432 [2022-02-09 01:13:40,503 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 969 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:40,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 2809 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2022-02-09 01:13:40,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 4165. [2022-02-09 01:13:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 2.882324687800192) internal successors, (12002), 4164 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 12002 transitions. [2022-02-09 01:13:40,608 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 12002 transitions. Word has length 77 [2022-02-09 01:13:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:40,608 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 12002 transitions. [2022-02-09 01:13:40,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 12002 transitions. [2022-02-09 01:13:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:40,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:40,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:40,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-09 01:13:40,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:40,828 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:40,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1259138339, now seen corresponding path program 31 times [2022-02-09 01:13:40,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:40,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915067474] [2022-02-09 01:13:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:40,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:40,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:40,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915067474] [2022-02-09 01:13:40,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915067474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:40,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769305789] [2022-02-09 01:13:40,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:13:40,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:40,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:40,974 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:40,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-09 01:13:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:41,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:13:41,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:41,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:41,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769305789] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:41,690 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:41,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-02-09 01:13:41,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032549318] [2022-02-09 01:13:41,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:41,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:13:41,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:13:41,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:13:41,692 INFO L87 Difference]: Start difference. First operand 4165 states and 12002 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:43,681 INFO L93 Difference]: Finished difference Result 7442 states and 21104 transitions. [2022-02-09 01:13:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-09 01:13:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:13:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:43,694 INFO L225 Difference]: With dead ends: 7442 [2022-02-09 01:13:43,694 INFO L226 Difference]: Without dead ends: 7397 [2022-02-09 01:13:43,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3920 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2390, Invalid=10266, Unknown=0, NotChecked=0, Total=12656 [2022-02-09 01:13:43,696 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 785 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:43,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 3287 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:13:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2022-02-09 01:13:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 4181. [2022-02-09 01:13:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4181 states, 4180 states have (on average 2.881818181818182) internal successors, (12046), 4180 states have internal predecessors, (12046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 12046 transitions. [2022-02-09 01:13:43,827 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 12046 transitions. Word has length 77 [2022-02-09 01:13:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:43,827 INFO L470 AbstractCegarLoop]: Abstraction has 4181 states and 12046 transitions. [2022-02-09 01:13:43,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 12046 transitions. [2022-02-09 01:13:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:43,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:43,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:43,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-09 01:13:44,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-02-09 01:13:44,034 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:44,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:44,034 INFO L85 PathProgramCache]: Analyzing trace with hash -962724129, now seen corresponding path program 32 times [2022-02-09 01:13:44,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:44,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749506798] [2022-02-09 01:13:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:44,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:44,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:44,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749506798] [2022-02-09 01:13:44,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749506798] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:44,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337627204] [2022-02-09 01:13:44,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:13:44,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:44,172 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:44,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-09 01:13:44,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:13:44,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:44,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:13:44,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:44,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:44,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337627204] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:44,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:44,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-09 01:13:44,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4144885] [2022-02-09 01:13:44,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:44,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-09 01:13:44,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-09 01:13:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-02-09 01:13:44,938 INFO L87 Difference]: Start difference. First operand 4181 states and 12046 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:48,393 INFO L93 Difference]: Finished difference Result 8898 states and 24913 transitions. [2022-02-09 01:13:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-09 01:13:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:13:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:48,406 INFO L225 Difference]: With dead ends: 8898 [2022-02-09 01:13:48,406 INFO L226 Difference]: Without dead ends: 8883 [2022-02-09 01:13:48,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7666 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3616, Invalid=18140, Unknown=0, NotChecked=0, Total=21756 [2022-02-09 01:13:48,408 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 910 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:48,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 3935 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:13:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-02-09 01:13:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 4189. [2022-02-09 01:13:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.883476599808978) internal successors, (12076), 4188 states have internal predecessors, (12076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12076 transitions. [2022-02-09 01:13:48,526 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12076 transitions. Word has length 77 [2022-02-09 01:13:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:48,526 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12076 transitions. [2022-02-09 01:13:48,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12076 transitions. [2022-02-09 01:13:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:48,534 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:48,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:48,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-09 01:13:48,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-09 01:13:48,759 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1793359353, now seen corresponding path program 33 times [2022-02-09 01:13:48,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:48,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870337199] [2022-02-09 01:13:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:48,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:48,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:48,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870337199] [2022-02-09 01:13:48,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870337199] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:48,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691001948] [2022-02-09 01:13:48,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:13:48,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:48,892 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:48,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-09 01:13:48,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-09 01:13:48,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:48,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:13:48,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:49,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:49,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691001948] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:49,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:49,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-02-09 01:13:49,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180918407] [2022-02-09 01:13:49,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:49,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:13:49,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:49,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:13:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:13:49,547 INFO L87 Difference]: Start difference. First operand 4189 states and 12076 transitions. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:52,232 INFO L93 Difference]: Finished difference Result 8616 states and 24405 transitions. [2022-02-09 01:13:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-09 01:13:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:13:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:52,246 INFO L225 Difference]: With dead ends: 8616 [2022-02-09 01:13:52,246 INFO L226 Difference]: Without dead ends: 8592 [2022-02-09 01:13:52,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6282 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3113, Invalid=15247, Unknown=0, NotChecked=0, Total=18360 [2022-02-09 01:13:52,247 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1541 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:52,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 2843 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:13:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-02-09 01:13:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 4189. [2022-02-09 01:13:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.8815663801337155) internal successors, (12068), 4188 states have internal predecessors, (12068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12068 transitions. [2022-02-09 01:13:52,334 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12068 transitions. Word has length 77 [2022-02-09 01:13:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:52,334 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12068 transitions. [2022-02-09 01:13:52,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12068 transitions. [2022-02-09 01:13:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:52,341 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:52,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:52,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-09 01:13:52,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-09 01:13:52,545 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash 802013543, now seen corresponding path program 34 times [2022-02-09 01:13:52,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:52,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607916725] [2022-02-09 01:13:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:52,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:52,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:52,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607916725] [2022-02-09 01:13:52,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607916725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:52,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372738626] [2022-02-09 01:13:52,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:13:52,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:52,684 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:52,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-09 01:13:52,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:13:52,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:52,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:13:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:53,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:53,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372738626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:53,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:53,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 34 [2022-02-09 01:13:53,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167019392] [2022-02-09 01:13:53,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:53,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:13:53,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:13:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:13:53,422 INFO L87 Difference]: Start difference. First operand 4189 states and 12068 transitions. Second operand has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:54,482 INFO L93 Difference]: Finished difference Result 6740 states and 19159 transitions. [2022-02-09 01:13:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-09 01:13:54,483 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:13:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:54,495 INFO L225 Difference]: With dead ends: 6740 [2022-02-09 01:13:54,495 INFO L226 Difference]: Without dead ends: 6695 [2022-02-09 01:13:54,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1024, Invalid=4526, Unknown=0, NotChecked=0, Total=5550 [2022-02-09 01:13:54,496 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 504 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:54,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 2642 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:13:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2022-02-09 01:13:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 4197. [2022-02-09 01:13:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 2.8813155386081983) internal successors, (12090), 4196 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 12090 transitions. [2022-02-09 01:13:54,562 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 12090 transitions. Word has length 77 [2022-02-09 01:13:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:54,562 INFO L470 AbstractCegarLoop]: Abstraction has 4197 states and 12090 transitions. [2022-02-09 01:13:54,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 12090 transitions. [2022-02-09 01:13:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:54,568 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:54,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:54,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-09 01:13:54,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:54,769 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:54,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 190927907, now seen corresponding path program 35 times [2022-02-09 01:13:54,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:54,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159640120] [2022-02-09 01:13:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:54,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:54,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:54,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159640120] [2022-02-09 01:13:54,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159640120] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:54,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098226188] [2022-02-09 01:13:54,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:13:54,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:54,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:54,915 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:54,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-09 01:13:54,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:13:54,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:54,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:13:54,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:55,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:55,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098226188] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:55,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:55,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-02-09 01:13:55,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913625413] [2022-02-09 01:13:55,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:55,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-09 01:13:55,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-09 01:13:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-02-09 01:13:55,738 INFO L87 Difference]: Start difference. First operand 4197 states and 12090 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:13:58,619 INFO L93 Difference]: Finished difference Result 10164 states and 28356 transitions. [2022-02-09 01:13:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-09 01:13:58,619 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:13:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:13:58,635 INFO L225 Difference]: With dead ends: 10164 [2022-02-09 01:13:58,635 INFO L226 Difference]: Without dead ends: 10014 [2022-02-09 01:13:58,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5513 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3441, Invalid=13851, Unknown=0, NotChecked=0, Total=17292 [2022-02-09 01:13:58,636 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 867 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:13:58,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3418 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:13:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10014 states. [2022-02-09 01:13:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10014 to 4685. [2022-02-09 01:13:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 2.8881298035866783) internal successors, (13528), 4684 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 13528 transitions. [2022-02-09 01:13:58,738 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 13528 transitions. Word has length 77 [2022-02-09 01:13:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:13:58,738 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 13528 transitions. [2022-02-09 01:13:58,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:13:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 13528 transitions. [2022-02-09 01:13:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:13:58,746 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:13:58,746 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:13:58,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-09 01:13:58,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-09 01:13:58,949 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:13:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:13:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2030934561, now seen corresponding path program 36 times [2022-02-09 01:13:58,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:13:58,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330190657] [2022-02-09 01:13:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:13:58,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:13:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:13:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:59,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:13:59,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330190657] [2022-02-09 01:13:59,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330190657] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:13:59,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240790428] [2022-02-09 01:13:59,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:13:59,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:13:59,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:13:59,069 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:13:59,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-09 01:13:59,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:13:59,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:13:59,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:13:59,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:13:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:59,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:13:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:13:59,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240790428] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:13:59,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:13:59,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-09 01:13:59,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157758715] [2022-02-09 01:13:59,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:13:59,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:13:59,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:13:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:13:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:13:59,884 INFO L87 Difference]: Start difference. First operand 4685 states and 13528 transitions. Second operand has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:03,698 INFO L93 Difference]: Finished difference Result 12402 states and 34548 transitions. [2022-02-09 01:14:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-09 01:14:03,698 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:03,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:03,722 INFO L225 Difference]: With dead ends: 12402 [2022-02-09 01:14:03,723 INFO L226 Difference]: Without dead ends: 12372 [2022-02-09 01:14:03,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8437 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3998, Invalid=19872, Unknown=0, NotChecked=0, Total=23870 [2022-02-09 01:14:03,724 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1027 mSDsluCounter, 3617 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:03,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 3683 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:14:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2022-02-09 01:14:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 5593. [2022-02-09 01:14:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5593 states, 5592 states have (on average 2.9393776824034337) internal successors, (16437), 5592 states have internal predecessors, (16437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 16437 transitions. [2022-02-09 01:14:03,862 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 16437 transitions. Word has length 77 [2022-02-09 01:14:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:03,862 INFO L470 AbstractCegarLoop]: Abstraction has 5593 states and 16437 transitions. [2022-02-09 01:14:03,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 16437 transitions. [2022-02-09 01:14:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:03,871 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:03,871 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:03,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-09 01:14:04,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-09 01:14:04,072 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:04,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:04,072 INFO L85 PathProgramCache]: Analyzing trace with hash 725148921, now seen corresponding path program 37 times [2022-02-09 01:14:04,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:04,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131861015] [2022-02-09 01:14:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:04,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:04,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:04,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131861015] [2022-02-09 01:14:04,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131861015] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:04,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63675275] [2022-02-09 01:14:04,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:14:04,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:04,188 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:04,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-09 01:14:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:04,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:04,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:04,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:04,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63675275] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:04,975 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:04,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-09 01:14:04,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437617510] [2022-02-09 01:14:04,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:04,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:04,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:04,976 INFO L87 Difference]: Start difference. First operand 5593 states and 16437 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:07,623 INFO L93 Difference]: Finished difference Result 9913 states and 27965 transitions. [2022-02-09 01:14:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-09 01:14:07,623 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:07,641 INFO L225 Difference]: With dead ends: 9913 [2022-02-09 01:14:07,641 INFO L226 Difference]: Without dead ends: 9865 [2022-02-09 01:14:07,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2189, Invalid=10021, Unknown=0, NotChecked=0, Total=12210 [2022-02-09 01:14:07,642 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1046 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:07,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 3436 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:14:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2022-02-09 01:14:07,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5585. [2022-02-09 01:14:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5584 states have (on average 2.9367836676217767) internal successors, (16399), 5584 states have internal predecessors, (16399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 16399 transitions. [2022-02-09 01:14:07,768 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 16399 transitions. Word has length 77 [2022-02-09 01:14:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:07,768 INFO L470 AbstractCegarLoop]: Abstraction has 5585 states and 16399 transitions. [2022-02-09 01:14:07,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 16399 transitions. [2022-02-09 01:14:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:07,777 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:07,777 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:07,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:07,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:07,978 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1428795491, now seen corresponding path program 38 times [2022-02-09 01:14:07,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:07,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962177090] [2022-02-09 01:14:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:07,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:08,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:08,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962177090] [2022-02-09 01:14:08,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962177090] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:08,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314047100] [2022-02-09 01:14:08,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:14:08,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:08,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:08,139 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:08,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-09 01:14:08,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:14:08,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:08,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:14:08,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:08,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:08,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314047100] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:08,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:08,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-02-09 01:14:08,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757837151] [2022-02-09 01:14:08,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:08,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-09 01:14:08,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-09 01:14:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-02-09 01:14:08,986 INFO L87 Difference]: Start difference. First operand 5585 states and 16399 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:10,807 INFO L93 Difference]: Finished difference Result 9863 states and 28180 transitions. [2022-02-09 01:14:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-09 01:14:10,809 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:10,828 INFO L225 Difference]: With dead ends: 9863 [2022-02-09 01:14:10,828 INFO L226 Difference]: Without dead ends: 9713 [2022-02-09 01:14:10,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1807, Invalid=8293, Unknown=0, NotChecked=0, Total=10100 [2022-02-09 01:14:10,830 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 580 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:10,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 3431 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2022-02-09 01:14:10,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 5681. [2022-02-09 01:14:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5680 states have (on average 2.9350352112676057) internal successors, (16671), 5680 states have internal predecessors, (16671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 16671 transitions. [2022-02-09 01:14:10,952 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 16671 transitions. Word has length 77 [2022-02-09 01:14:10,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:10,952 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 16671 transitions. [2022-02-09 01:14:10,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 16671 transitions. [2022-02-09 01:14:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:10,961 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:10,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:10,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-09 01:14:11,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-09 01:14:11,161 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -793066977, now seen corresponding path program 39 times [2022-02-09 01:14:11,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:11,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257798892] [2022-02-09 01:14:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:11,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:11,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:11,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257798892] [2022-02-09 01:14:11,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257798892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:11,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412257185] [2022-02-09 01:14:11,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:14:11,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:11,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:11,282 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:11,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-09 01:14:11,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:14:11,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:11,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:14:11,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:11,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:11,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412257185] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:11,959 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:11,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 34 [2022-02-09 01:14:11,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601677341] [2022-02-09 01:14:11,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:11,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:14:11,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:14:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:14:11,960 INFO L87 Difference]: Start difference. First operand 5681 states and 16671 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:15,779 INFO L93 Difference]: Finished difference Result 13788 states and 39217 transitions. [2022-02-09 01:14:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-02-09 01:14:15,779 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:15,807 INFO L225 Difference]: With dead ends: 13788 [2022-02-09 01:14:15,807 INFO L226 Difference]: Without dead ends: 13758 [2022-02-09 01:14:15,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10436 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4693, Invalid=23363, Unknown=0, NotChecked=0, Total=28056 [2022-02-09 01:14:15,809 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1391 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:15,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 4056 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:14:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13758 states. [2022-02-09 01:14:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13758 to 7369. [2022-02-09 01:14:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7369 states, 7368 states have (on average 2.9729913137893593) internal successors, (21905), 7368 states have internal predecessors, (21905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 21905 transitions. [2022-02-09 01:14:15,982 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 21905 transitions. Word has length 77 [2022-02-09 01:14:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:15,982 INFO L470 AbstractCegarLoop]: Abstraction has 7369 states and 21905 transitions. [2022-02-09 01:14:15,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 21905 transitions. [2022-02-09 01:14:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:15,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:15,995 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:16,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-09 01:14:16,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:16,207 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:16,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:16,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1963016505, now seen corresponding path program 40 times [2022-02-09 01:14:16,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:16,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394733528] [2022-02-09 01:14:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:16,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:16,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:16,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394733528] [2022-02-09 01:14:16,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394733528] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:16,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534049167] [2022-02-09 01:14:16,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:14:16,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:16,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:16,329 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:16,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-09 01:14:16,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:14:16,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:16,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:16,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:16,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:17,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534049167] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:17,054 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:17,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-09 01:14:17,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549132404] [2022-02-09 01:14:17,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:17,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:17,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:17,055 INFO L87 Difference]: Start difference. First operand 7369 states and 21905 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:19,163 INFO L93 Difference]: Finished difference Result 12790 states and 37282 transitions. [2022-02-09 01:14:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-09 01:14:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:19,188 INFO L225 Difference]: With dead ends: 12790 [2022-02-09 01:14:19,188 INFO L226 Difference]: Without dead ends: 12742 [2022-02-09 01:14:19,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1728, Invalid=8172, Unknown=0, NotChecked=0, Total=9900 [2022-02-09 01:14:19,190 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 852 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:19,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 3702 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:14:19,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12742 states. [2022-02-09 01:14:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12742 to 7909. [2022-02-09 01:14:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 2.979514415781487) internal successors, (23562), 7908 states have internal predecessors, (23562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 23562 transitions. [2022-02-09 01:14:19,399 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 23562 transitions. Word has length 77 [2022-02-09 01:14:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:19,399 INFO L470 AbstractCegarLoop]: Abstraction has 7909 states and 23562 transitions. [2022-02-09 01:14:19,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 23562 transitions. [2022-02-09 01:14:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:19,414 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:19,414 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:19,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-09 01:14:19,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:19,635 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2104307295, now seen corresponding path program 41 times [2022-02-09 01:14:19,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:19,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361691278] [2022-02-09 01:14:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:19,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:19,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:19,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361691278] [2022-02-09 01:14:19,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361691278] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:19,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142486983] [2022-02-09 01:14:19,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:14:19,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:19,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:19,765 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:19,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-09 01:14:19,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:14:19,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:19,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:19,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:20,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:20,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142486983] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:20,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:20,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-09 01:14:20,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001255387] [2022-02-09 01:14:20,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:20,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-09 01:14:20,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-09 01:14:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-02-09 01:14:20,472 INFO L87 Difference]: Start difference. First operand 7909 states and 23562 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:22,600 INFO L93 Difference]: Finished difference Result 13751 states and 39970 transitions. [2022-02-09 01:14:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-09 01:14:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:22,625 INFO L225 Difference]: With dead ends: 13751 [2022-02-09 01:14:22,625 INFO L226 Difference]: Without dead ends: 13721 [2022-02-09 01:14:22,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1831, Invalid=9725, Unknown=0, NotChecked=0, Total=11556 [2022-02-09 01:14:22,626 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1096 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:22,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 2725 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2022-02-09 01:14:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 8425. [2022-02-09 01:14:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8425 states, 8424 states have (on average 2.9768518518518516) internal successors, (25077), 8424 states have internal predecessors, (25077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 25077 transitions. [2022-02-09 01:14:22,794 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 25077 transitions. Word has length 77 [2022-02-09 01:14:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:22,794 INFO L470 AbstractCegarLoop]: Abstraction has 8425 states and 25077 transitions. [2022-02-09 01:14:22,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 25077 transitions. [2022-02-09 01:14:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:22,806 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:22,806 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:22,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-09 01:14:23,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-09 01:14:23,007 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash 565423481, now seen corresponding path program 42 times [2022-02-09 01:14:23,007 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:23,007 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577367817] [2022-02-09 01:14:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:23,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:23,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:23,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577367817] [2022-02-09 01:14:23,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577367817] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:23,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651365040] [2022-02-09 01:14:23,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:14:23,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:23,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:23,136 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:23,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-09 01:14:23,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-09 01:14:23,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:23,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:23,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:23,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:23,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651365040] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:23,876 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:23,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-09 01:14:23,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930315689] [2022-02-09 01:14:23,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:23,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-09 01:14:23,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:23,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-09 01:14:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-02-09 01:14:23,878 INFO L87 Difference]: Start difference. First operand 8425 states and 25077 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:25,376 INFO L93 Difference]: Finished difference Result 13035 states and 37943 transitions. [2022-02-09 01:14:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-09 01:14:25,376 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:25,401 INFO L225 Difference]: With dead ends: 13035 [2022-02-09 01:14:25,401 INFO L226 Difference]: Without dead ends: 12987 [2022-02-09 01:14:25,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1076, Invalid=5244, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 01:14:25,402 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 853 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:25,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 2703 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2022-02-09 01:14:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 8073. [2022-02-09 01:14:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8073 states, 8072 states have (on average 2.977824578790882) internal successors, (24037), 8072 states have internal predecessors, (24037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 24037 transitions. [2022-02-09 01:14:25,567 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 24037 transitions. Word has length 77 [2022-02-09 01:14:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:25,567 INFO L470 AbstractCegarLoop]: Abstraction has 8073 states and 24037 transitions. [2022-02-09 01:14:25,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 24037 transitions. [2022-02-09 01:14:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:25,578 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:25,579 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:25,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:25,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-09 01:14:25,779 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:25,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:25,780 INFO L85 PathProgramCache]: Analyzing trace with hash -940442981, now seen corresponding path program 43 times [2022-02-09 01:14:25,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:25,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949006543] [2022-02-09 01:14:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:25,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:25,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:25,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949006543] [2022-02-09 01:14:25,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949006543] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:25,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016504438] [2022-02-09 01:14:25,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:14:25,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:25,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:25,915 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:25,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-09 01:14:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:25,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:25,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:26,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:26,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016504438] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:26,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:26,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-09 01:14:26,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047766232] [2022-02-09 01:14:26,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:26,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-09 01:14:26,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:26,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-09 01:14:26,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-02-09 01:14:26,630 INFO L87 Difference]: Start difference. First operand 8073 states and 24037 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:27,345 INFO L93 Difference]: Finished difference Result 9873 states and 29356 transitions. [2022-02-09 01:14:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 01:14:27,345 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:27,362 INFO L225 Difference]: With dead ends: 9873 [2022-02-09 01:14:27,363 INFO L226 Difference]: Without dead ends: 9837 [2022-02-09 01:14:27,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=477, Invalid=2279, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 01:14:27,363 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 618 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:27,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 2079 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:14:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2022-02-09 01:14:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 8077. [2022-02-09 01:14:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8077 states, 8076 states have (on average 2.9777117384843983) internal successors, (24048), 8076 states have internal predecessors, (24048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 24048 transitions. [2022-02-09 01:14:27,495 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 24048 transitions. Word has length 77 [2022-02-09 01:14:27,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:27,495 INFO L470 AbstractCegarLoop]: Abstraction has 8077 states and 24048 transitions. [2022-02-09 01:14:27,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 24048 transitions. [2022-02-09 01:14:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:27,506 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:27,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:27,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-09 01:14:27,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-09 01:14:27,707 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:27,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1822451929, now seen corresponding path program 44 times [2022-02-09 01:14:27,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:27,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416393664] [2022-02-09 01:14:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:27,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:27,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:27,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416393664] [2022-02-09 01:14:27,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416393664] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:27,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879713599] [2022-02-09 01:14:27,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:14:27,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:27,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:27,858 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:27,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-09 01:14:27,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:14:27,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:27,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:14:27,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:28,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:28,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879713599] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:28,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:28,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 35 [2022-02-09 01:14:28,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592812702] [2022-02-09 01:14:28,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:28,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-09 01:14:28,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-09 01:14:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2022-02-09 01:14:28,674 INFO L87 Difference]: Start difference. First operand 8077 states and 24048 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:31,276 INFO L93 Difference]: Finished difference Result 14182 states and 41355 transitions. [2022-02-09 01:14:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-09 01:14:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:31,302 INFO L225 Difference]: With dead ends: 14182 [2022-02-09 01:14:31,302 INFO L226 Difference]: Without dead ends: 14107 [2022-02-09 01:14:31,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6721 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3704, Invalid=15756, Unknown=0, NotChecked=0, Total=19460 [2022-02-09 01:14:31,305 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 783 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:31,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 3065 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:14:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2022-02-09 01:14:31,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 8733. [2022-02-09 01:14:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8733 states, 8732 states have (on average 2.977553825011452) internal successors, (26000), 8732 states have internal predecessors, (26000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 26000 transitions. [2022-02-09 01:14:31,492 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 26000 transitions. Word has length 77 [2022-02-09 01:14:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:31,492 INFO L470 AbstractCegarLoop]: Abstraction has 8733 states and 26000 transitions. [2022-02-09 01:14:31,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 26000 transitions. [2022-02-09 01:14:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:31,503 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:31,504 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:31,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:31,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:31,704 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:31,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash -520158177, now seen corresponding path program 45 times [2022-02-09 01:14:31,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:31,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847578653] [2022-02-09 01:14:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:31,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:31,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:31,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847578653] [2022-02-09 01:14:31,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847578653] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:31,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298912612] [2022-02-09 01:14:31,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:14:31,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:31,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:31,834 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:31,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-09 01:14:31,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:14:31,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:31,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:14:31,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:32,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:32,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298912612] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:32,485 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:32,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-02-09 01:14:32,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880713808] [2022-02-09 01:14:32,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:32,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-09 01:14:32,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:32,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-09 01:14:32,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2022-02-09 01:14:32,486 INFO L87 Difference]: Start difference. First operand 8733 states and 26000 transitions. Second operand has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:36,742 INFO L93 Difference]: Finished difference Result 18496 states and 53581 transitions. [2022-02-09 01:14:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-09 01:14:36,742 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:36,785 INFO L225 Difference]: With dead ends: 18496 [2022-02-09 01:14:36,786 INFO L226 Difference]: Without dead ends: 18466 [2022-02-09 01:14:36,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12734 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5678, Invalid=27994, Unknown=0, NotChecked=0, Total=33672 [2022-02-09 01:14:36,789 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1647 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:36,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 3672 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:14:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2022-02-09 01:14:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 11413. [2022-02-09 01:14:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11412 states have (on average 2.997721696459867) internal successors, (34210), 11412 states have internal predecessors, (34210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 34210 transitions. [2022-02-09 01:14:37,103 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 34210 transitions. Word has length 77 [2022-02-09 01:14:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:37,103 INFO L470 AbstractCegarLoop]: Abstraction has 11413 states and 34210 transitions. [2022-02-09 01:14:37,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 34210 transitions. [2022-02-09 01:14:37,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:37,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:37,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:37,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:37,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-09 01:14:37,322 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2059041991, now seen corresponding path program 46 times [2022-02-09 01:14:37,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:37,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159422011] [2022-02-09 01:14:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:37,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:37,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:37,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159422011] [2022-02-09 01:14:37,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159422011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:37,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93688802] [2022-02-09 01:14:37,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:14:37,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:37,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:37,448 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:37,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-09 01:14:37,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:14:37,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:37,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:37,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:37,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:38,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93688802] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:38,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:38,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-09 01:14:38,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555542871] [2022-02-09 01:14:38,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:38,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:38,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:38,136 INFO L87 Difference]: Start difference. First operand 11413 states and 34210 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:40,539 INFO L93 Difference]: Finished difference Result 17859 states and 52232 transitions. [2022-02-09 01:14:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-09 01:14:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:40,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:40,572 INFO L225 Difference]: With dead ends: 17859 [2022-02-09 01:14:40,572 INFO L226 Difference]: Without dead ends: 17787 [2022-02-09 01:14:40,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3883 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2109, Invalid=10323, Unknown=0, NotChecked=0, Total=12432 [2022-02-09 01:14:40,573 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1077 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:40,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 2985 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2022-02-09 01:14:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 11969. [2022-02-09 01:14:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11969 states, 11968 states have (on average 3.005932486631016) internal successors, (35975), 11968 states have internal predecessors, (35975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11969 states to 11969 states and 35975 transitions. [2022-02-09 01:14:40,814 INFO L78 Accepts]: Start accepts. Automaton has 11969 states and 35975 transitions. Word has length 77 [2022-02-09 01:14:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:40,814 INFO L470 AbstractCegarLoop]: Abstraction has 11969 states and 35975 transitions. [2022-02-09 01:14:40,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11969 states and 35975 transitions. [2022-02-09 01:14:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:40,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:40,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:40,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-09 01:14:41,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-09 01:14:41,034 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 730058843, now seen corresponding path program 47 times [2022-02-09 01:14:41,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:41,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891575395] [2022-02-09 01:14:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:41,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:41,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:41,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891575395] [2022-02-09 01:14:41,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891575395] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:41,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413537651] [2022-02-09 01:14:41,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:14:41,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:41,161 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:41,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-09 01:14:41,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-09 01:14:41,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:41,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 01:14:41,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:41,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:41,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413537651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:41,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:41,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-09 01:14:41,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440665944] [2022-02-09 01:14:41,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:41,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-09 01:14:41,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-09 01:14:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2022-02-09 01:14:41,831 INFO L87 Difference]: Start difference. First operand 11969 states and 35975 transitions. Second operand has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:43,499 INFO L93 Difference]: Finished difference Result 22953 states and 67933 transitions. [2022-02-09 01:14:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-09 01:14:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:43,553 INFO L225 Difference]: With dead ends: 22953 [2022-02-09 01:14:43,553 INFO L226 Difference]: Without dead ends: 22881 [2022-02-09 01:14:43,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1519, Invalid=8581, Unknown=0, NotChecked=0, Total=10100 [2022-02-09 01:14:43,555 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 624 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:43,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 2474 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:14:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22881 states. [2022-02-09 01:14:43,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22881 to 12161. [2022-02-09 01:14:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12161 states, 12160 states have (on average 3.0045230263157894) internal successors, (36535), 12160 states have internal predecessors, (36535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12161 states to 12161 states and 36535 transitions. [2022-02-09 01:14:43,877 INFO L78 Accepts]: Start accepts. Automaton has 12161 states and 36535 transitions. Word has length 77 [2022-02-09 01:14:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:43,877 INFO L470 AbstractCegarLoop]: Abstraction has 12161 states and 36535 transitions. [2022-02-09 01:14:43,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 12161 states and 36535 transitions. [2022-02-09 01:14:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:43,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:43,938 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:43,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:44,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:44,139 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:44,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1998644761, now seen corresponding path program 48 times [2022-02-09 01:14:44,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:44,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899321740] [2022-02-09 01:14:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:44,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:44,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:44,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899321740] [2022-02-09 01:14:44,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899321740] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:44,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22613798] [2022-02-09 01:14:44,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:14:44,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:44,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:44,276 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:44,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-09 01:14:44,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:14:44,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:44,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-09 01:14:44,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:44,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:44,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22613798] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:44,962 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:44,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 32 [2022-02-09 01:14:44,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319459264] [2022-02-09 01:14:44,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:44,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:14:44,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:44,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:14:44,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:14:44,964 INFO L87 Difference]: Start difference. First operand 12161 states and 36535 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:50,584 INFO L93 Difference]: Finished difference Result 29756 states and 87065 transitions. [2022-02-09 01:14:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-02-09 01:14:50,584 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:50,653 INFO L225 Difference]: With dead ends: 29756 [2022-02-09 01:14:50,653 INFO L226 Difference]: Without dead ends: 29411 [2022-02-09 01:14:50,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23300 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=8315, Invalid=49045, Unknown=0, NotChecked=0, Total=57360 [2022-02-09 01:14:50,658 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1667 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:50,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1667 Valid, 3723 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:14:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29411 states. [2022-02-09 01:14:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29411 to 15768. [2022-02-09 01:14:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15768 states, 15767 states have (on average 2.986427348259022) internal successors, (47087), 15767 states have internal predecessors, (47087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15768 states to 15768 states and 47087 transitions. [2022-02-09 01:14:51,062 INFO L78 Accepts]: Start accepts. Automaton has 15768 states and 47087 transitions. Word has length 77 [2022-02-09 01:14:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:51,062 INFO L470 AbstractCegarLoop]: Abstraction has 15768 states and 47087 transitions. [2022-02-09 01:14:51,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:51,062 INFO L276 IsEmpty]: Start isEmpty. Operand 15768 states and 47087 transitions. [2022-02-09 01:14:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:51,086 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:51,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:51,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-09 01:14:51,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-02-09 01:14:51,286 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash -72915937, now seen corresponding path program 49 times [2022-02-09 01:14:51,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:51,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403398811] [2022-02-09 01:14:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:51,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:51,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:51,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403398811] [2022-02-09 01:14:51,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403398811] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:51,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417531835] [2022-02-09 01:14:51,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:14:51,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:51,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:51,404 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:51,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-09 01:14:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:51,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:51,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:51,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:52,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417531835] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:52,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:52,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-09 01:14:52,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125951986] [2022-02-09 01:14:52,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:52,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:14:52,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:14:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:14:52,142 INFO L87 Difference]: Start difference. First operand 15768 states and 47087 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:54,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:54,165 INFO L93 Difference]: Finished difference Result 21164 states and 62515 transitions. [2022-02-09 01:14:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-09 01:14:54,165 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:54,202 INFO L225 Difference]: With dead ends: 21164 [2022-02-09 01:14:54,202 INFO L226 Difference]: Without dead ends: 21128 [2022-02-09 01:14:54,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1680, Invalid=8220, Unknown=0, NotChecked=0, Total=9900 [2022-02-09 01:14:54,203 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1180 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:54,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 3307 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:14:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21128 states. [2022-02-09 01:14:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21128 to 16764. [2022-02-09 01:14:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16763 states have (on average 2.9952872397542207) internal successors, (50210), 16763 states have internal predecessors, (50210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 50210 transitions. [2022-02-09 01:14:54,489 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 50210 transitions. Word has length 77 [2022-02-09 01:14:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:54,489 INFO L470 AbstractCegarLoop]: Abstraction has 16764 states and 50210 transitions. [2022-02-09 01:14:54,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:54,489 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 50210 transitions. [2022-02-09 01:14:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:14:54,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:14:54,514 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:14:54,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-09 01:14:54,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:54,715 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:14:54,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:14:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1176482649, now seen corresponding path program 50 times [2022-02-09 01:14:54,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:14:54,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332728461] [2022-02-09 01:14:54,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:14:54,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:14:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:14:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:54,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:14:54,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332728461] [2022-02-09 01:14:54,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332728461] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:14:54,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733325450] [2022-02-09 01:14:54,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:14:54,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:14:54,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:14:54,817 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:14:54,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-09 01:14:54,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:14:54,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:14:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:14:54,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:14:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:55,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:14:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:14:55,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733325450] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:14:55,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:14:55,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-09 01:14:55,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547029425] [2022-02-09 01:14:55,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:14:55,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-09 01:14:55,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:14:55,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-09 01:14:55,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-02-09 01:14:55,473 INFO L87 Difference]: Start difference. First operand 16764 states and 50210 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:14:59,303 INFO L93 Difference]: Finished difference Result 32421 states and 95423 transitions. [2022-02-09 01:14:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-09 01:14:59,303 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:14:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:14:59,389 INFO L225 Difference]: With dead ends: 32421 [2022-02-09 01:14:59,390 INFO L226 Difference]: Without dead ends: 32376 [2022-02-09 01:14:59,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5348, Invalid=25804, Unknown=0, NotChecked=0, Total=31152 [2022-02-09 01:14:59,394 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1398 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:14:59,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 3258 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:14:59,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32376 states. [2022-02-09 01:14:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32376 to 19893. [2022-02-09 01:14:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19893 states, 19892 states have (on average 3.001105972250151) internal successors, (59698), 19892 states have internal predecessors, (59698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19893 states to 19893 states and 59698 transitions. [2022-02-09 01:14:59,968 INFO L78 Accepts]: Start accepts. Automaton has 19893 states and 59698 transitions. Word has length 77 [2022-02-09 01:14:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:14:59,969 INFO L470 AbstractCegarLoop]: Abstraction has 19893 states and 59698 transitions. [2022-02-09 01:14:59,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:14:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19893 states and 59698 transitions. [2022-02-09 01:15:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:00,005 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:00,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:00,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-09 01:15:00,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-02-09 01:15:00,206 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1579600833, now seen corresponding path program 51 times [2022-02-09 01:15:00,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:00,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790204442] [2022-02-09 01:15:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:00,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:00,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:00,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790204442] [2022-02-09 01:15:00,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790204442] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:00,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315680286] [2022-02-09 01:15:00,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:15:00,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:00,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:00,309 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:00,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-09 01:15:00,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-09 01:15:00,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:00,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:15:00,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:00,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:00,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315680286] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:00,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:00,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-02-09 01:15:00,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839449519] [2022-02-09 01:15:00,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:00,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-09 01:15:00,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:00,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-09 01:15:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2022-02-09 01:15:00,951 INFO L87 Difference]: Start difference. First operand 19893 states and 59698 transitions. Second operand has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:07,417 INFO L93 Difference]: Finished difference Result 36557 states and 108426 transitions. [2022-02-09 01:15:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-02-09 01:15:07,417 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:07,496 INFO L225 Difference]: With dead ends: 36557 [2022-02-09 01:15:07,497 INFO L226 Difference]: Without dead ends: 36509 [2022-02-09 01:15:07,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24666 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=9606, Invalid=51156, Unknown=0, NotChecked=0, Total=60762 [2022-02-09 01:15:07,499 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 2452 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 4324 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:07,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 4324 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 01:15:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36509 states. [2022-02-09 01:15:08,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36509 to 20333. [2022-02-09 01:15:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20333 states, 20332 states have (on average 2.9956718473342514) internal successors, (60908), 20332 states have internal predecessors, (60908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20333 states to 20333 states and 60908 transitions. [2022-02-09 01:15:08,076 INFO L78 Accepts]: Start accepts. Automaton has 20333 states and 60908 transitions. Word has length 77 [2022-02-09 01:15:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:08,076 INFO L470 AbstractCegarLoop]: Abstraction has 20333 states and 60908 transitions. [2022-02-09 01:15:08,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 20333 states and 60908 transitions. [2022-02-09 01:15:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:08,109 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:08,109 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:08,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-09 01:15:08,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-09 01:15:08,310 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:08,310 INFO L85 PathProgramCache]: Analyzing trace with hash 73734371, now seen corresponding path program 52 times [2022-02-09 01:15:08,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:08,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335930645] [2022-02-09 01:15:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:08,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:08,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:08,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335930645] [2022-02-09 01:15:08,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335930645] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:08,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795386473] [2022-02-09 01:15:08,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:15:08,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:08,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:08,434 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:08,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-09 01:15:08,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:15:08,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:08,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:08,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:08,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:09,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795386473] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:09,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:09,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-09 01:15:09,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326727660] [2022-02-09 01:15:09,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:09,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-09 01:15:09,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:09,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-09 01:15:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2022-02-09 01:15:09,320 INFO L87 Difference]: Start difference. First operand 20333 states and 60908 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:11,738 INFO L93 Difference]: Finished difference Result 33381 states and 99082 transitions. [2022-02-09 01:15:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-09 01:15:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:11,823 INFO L225 Difference]: With dead ends: 33381 [2022-02-09 01:15:11,823 INFO L226 Difference]: Without dead ends: 33345 [2022-02-09 01:15:11,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4532 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2306, Invalid=11266, Unknown=0, NotChecked=0, Total=13572 [2022-02-09 01:15:11,824 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1240 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:11,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 2882 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:15:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33345 states. [2022-02-09 01:15:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33345 to 20209. [2022-02-09 01:15:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20209 states, 20208 states have (on average 2.9928246239113223) internal successors, (60479), 20208 states have internal predecessors, (60479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20209 states to 20209 states and 60479 transitions. [2022-02-09 01:15:12,444 INFO L78 Accepts]: Start accepts. Automaton has 20209 states and 60479 transitions. Word has length 77 [2022-02-09 01:15:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:12,444 INFO L470 AbstractCegarLoop]: Abstraction has 20209 states and 60479 transitions. [2022-02-09 01:15:12,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 20209 states and 60479 transitions. [2022-02-09 01:15:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:12,479 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:12,479 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:12,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:12,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:12,680 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:12,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1917390069, now seen corresponding path program 53 times [2022-02-09 01:15:12,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:12,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426908791] [2022-02-09 01:15:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:12,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:12,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:12,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426908791] [2022-02-09 01:15:12,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426908791] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:12,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134501460] [2022-02-09 01:15:12,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:15:12,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:12,793 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:12,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-09 01:15:12,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-09 01:15:12,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:12,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 01:15:12,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:13,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:13,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134501460] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:13,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:13,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-02-09 01:15:13,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500427261] [2022-02-09 01:15:13,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:13,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-09 01:15:13,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-09 01:15:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-02-09 01:15:13,441 INFO L87 Difference]: Start difference. First operand 20209 states and 60479 transitions. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:16,086 INFO L93 Difference]: Finished difference Result 38522 states and 113262 transitions. [2022-02-09 01:15:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-09 01:15:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:16,167 INFO L225 Difference]: With dead ends: 38522 [2022-02-09 01:15:16,167 INFO L226 Difference]: Without dead ends: 38474 [2022-02-09 01:15:16,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5568 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2672, Invalid=13840, Unknown=0, NotChecked=0, Total=16512 [2022-02-09 01:15:16,168 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 1135 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:16,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 3368 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:15:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states. [2022-02-09 01:15:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38474 to 20593. [2022-02-09 01:15:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20593 states, 20592 states have (on average 2.996649184149184) internal successors, (61707), 20592 states have internal predecessors, (61707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20593 states to 20593 states and 61707 transitions. [2022-02-09 01:15:16,777 INFO L78 Accepts]: Start accepts. Automaton has 20593 states and 61707 transitions. Word has length 77 [2022-02-09 01:15:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:16,777 INFO L470 AbstractCegarLoop]: Abstraction has 20593 states and 61707 transitions. [2022-02-09 01:15:16,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 20593 states and 61707 transitions. [2022-02-09 01:15:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:16,809 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:16,809 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:16,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:17,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:17,010 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:17,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1473791071, now seen corresponding path program 54 times [2022-02-09 01:15:17,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:17,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329156207] [2022-02-09 01:15:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:17,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:17,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:17,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329156207] [2022-02-09 01:15:17,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329156207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:17,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479175771] [2022-02-09 01:15:17,117 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:15:17,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:17,118 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:17,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-09 01:15:17,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:15:17,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:17,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:17,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:17,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:17,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479175771] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:17,757 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:17,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-09 01:15:17,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899787609] [2022-02-09 01:15:17,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:17,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:15:17,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:15:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:15:17,758 INFO L87 Difference]: Start difference. First operand 20593 states and 61707 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:20,968 INFO L93 Difference]: Finished difference Result 37942 states and 113081 transitions. [2022-02-09 01:15:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-09 01:15:20,969 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:21,061 INFO L225 Difference]: With dead ends: 37942 [2022-02-09 01:15:21,061 INFO L226 Difference]: Without dead ends: 37912 [2022-02-09 01:15:21,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7712 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3953, Invalid=18099, Unknown=0, NotChecked=0, Total=22052 [2022-02-09 01:15:21,064 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1005 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:21,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 2974 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:15:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37912 states. [2022-02-09 01:15:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37912 to 27933. [2022-02-09 01:15:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27933 states, 27932 states have (on average 3.0211943290849206) internal successors, (84388), 27932 states have internal predecessors, (84388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27933 states to 27933 states and 84388 transitions. [2022-02-09 01:15:21,851 INFO L78 Accepts]: Start accepts. Automaton has 27933 states and 84388 transitions. Word has length 77 [2022-02-09 01:15:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:21,851 INFO L470 AbstractCegarLoop]: Abstraction has 27933 states and 84388 transitions. [2022-02-09 01:15:21,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 27933 states and 84388 transitions. [2022-02-09 01:15:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:21,897 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:21,897 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:21,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-09 01:15:22,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:22,098 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:22,098 INFO L85 PathProgramCache]: Analyzing trace with hash -65092743, now seen corresponding path program 55 times [2022-02-09 01:15:22,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:22,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389244297] [2022-02-09 01:15:22,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:22,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:22,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:22,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389244297] [2022-02-09 01:15:22,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389244297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:22,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904821482] [2022-02-09 01:15:22,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:15:22,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:22,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:22,222 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:22,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-09 01:15:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:22,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:22,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:22,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:22,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904821482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:22,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:22,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-09 01:15:22,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882114483] [2022-02-09 01:15:22,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:22,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:15:22,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:15:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:15:22,901 INFO L87 Difference]: Start difference. First operand 27933 states and 84388 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:25,186 INFO L93 Difference]: Finished difference Result 35041 states and 104489 transitions. [2022-02-09 01:15:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-09 01:15:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:25,270 INFO L225 Difference]: With dead ends: 35041 [2022-02-09 01:15:25,270 INFO L226 Difference]: Without dead ends: 34945 [2022-02-09 01:15:25,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1987, Invalid=9143, Unknown=0, NotChecked=0, Total=11130 [2022-02-09 01:15:25,271 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 850 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 3500 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:25,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 3500 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:15:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34945 states. [2022-02-09 01:15:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34945 to 24729. [2022-02-09 01:15:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24729 states, 24728 states have (on average 3.0120106761565837) internal successors, (74481), 24728 states have internal predecessors, (74481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24729 states to 24729 states and 74481 transitions. [2022-02-09 01:15:25,948 INFO L78 Accepts]: Start accepts. Automaton has 24729 states and 74481 transitions. Word has length 77 [2022-02-09 01:15:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:25,948 INFO L470 AbstractCegarLoop]: Abstraction has 24729 states and 74481 transitions. [2022-02-09 01:15:25,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 24729 states and 74481 transitions. [2022-02-09 01:15:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:25,985 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:25,985 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:26,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:26,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-09 01:15:26,186 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1921033311, now seen corresponding path program 56 times [2022-02-09 01:15:26,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:26,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955865269] [2022-02-09 01:15:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:26,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:26,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:26,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955865269] [2022-02-09 01:15:26,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955865269] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:26,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097573289] [2022-02-09 01:15:26,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:15:26,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:26,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:26,329 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:26,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-09 01:15:26,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:15:26,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:26,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:26,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:26,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:26,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097573289] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:26,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:26,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-09 01:15:26,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502411737] [2022-02-09 01:15:26,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:26,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:15:26,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:15:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:15:26,981 INFO L87 Difference]: Start difference. First operand 24729 states and 74481 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:28,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:28,597 INFO L93 Difference]: Finished difference Result 29827 states and 89157 transitions. [2022-02-09 01:15:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-09 01:15:28,597 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:28,661 INFO L225 Difference]: With dead ends: 29827 [2022-02-09 01:15:28,661 INFO L226 Difference]: Without dead ends: 29755 [2022-02-09 01:15:28,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1188, Invalid=5454, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 01:15:28,662 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 883 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:28,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 2355 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:15:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29755 states. [2022-02-09 01:15:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29755 to 24853. [2022-02-09 01:15:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24853 states, 24852 states have (on average 3.011186222436826) internal successors, (74834), 24852 states have internal predecessors, (74834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24853 states to 24853 states and 74834 transitions. [2022-02-09 01:15:29,359 INFO L78 Accepts]: Start accepts. Automaton has 24853 states and 74834 transitions. Word has length 77 [2022-02-09 01:15:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:29,359 INFO L470 AbstractCegarLoop]: Abstraction has 24853 states and 74834 transitions. [2022-02-09 01:15:29,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 24853 states and 74834 transitions. [2022-02-09 01:15:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:29,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:29,406 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:29,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:29,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-09 01:15:29,606 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 817466599, now seen corresponding path program 57 times [2022-02-09 01:15:29,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:29,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797529450] [2022-02-09 01:15:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:29,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:29,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:29,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797529450] [2022-02-09 01:15:29,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797529450] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:29,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654628078] [2022-02-09 01:15:29,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:15:29,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:29,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:29,715 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:29,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-09 01:15:29,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-09 01:15:29,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:15:29,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:30,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:30,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654628078] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:30,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:30,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-02-09 01:15:30,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070958452] [2022-02-09 01:15:30,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:30,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-09 01:15:30,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-09 01:15:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-02-09 01:15:30,418 INFO L87 Difference]: Start difference. First operand 24853 states and 74834 transitions. Second operand has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:35,583 INFO L93 Difference]: Finished difference Result 43877 states and 130351 transitions. [2022-02-09 01:15:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-02-09 01:15:35,583 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:35,685 INFO L225 Difference]: With dead ends: 43877 [2022-02-09 01:15:35,686 INFO L226 Difference]: Without dead ends: 43787 [2022-02-09 01:15:35,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17610 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9170, Invalid=35562, Unknown=0, NotChecked=0, Total=44732 [2022-02-09 01:15:35,688 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1702 mSDsluCounter, 4179 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:35,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 4165 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:15:35,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43787 states. [2022-02-09 01:15:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43787 to 26781. [2022-02-09 01:15:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26781 states, 26780 states have (on average 3.0019417475728156) internal successors, (80392), 26780 states have internal predecessors, (80392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26781 states to 26781 states and 80392 transitions. [2022-02-09 01:15:36,459 INFO L78 Accepts]: Start accepts. Automaton has 26781 states and 80392 transitions. Word has length 77 [2022-02-09 01:15:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:36,460 INFO L470 AbstractCegarLoop]: Abstraction has 26781 states and 80392 transitions. [2022-02-09 01:15:36,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:36,460 INFO L276 IsEmpty]: Start isEmpty. Operand 26781 states and 80392 transitions. [2022-02-09 01:15:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:36,506 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:36,506 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:36,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-09 01:15:36,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:36,706 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash -721417215, now seen corresponding path program 58 times [2022-02-09 01:15:36,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:36,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634330582] [2022-02-09 01:15:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:36,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:36,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:36,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634330582] [2022-02-09 01:15:36,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634330582] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:36,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238570758] [2022-02-09 01:15:36,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:15:36,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:36,832 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:36,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-09 01:15:36,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:15:36,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:36,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:36,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:37,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:37,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238570758] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:37,425 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:37,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-09 01:15:37,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087321387] [2022-02-09 01:15:37,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:37,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:15:37,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:15:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:15:37,426 INFO L87 Difference]: Start difference. First operand 26781 states and 80392 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:39,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:39,546 INFO L93 Difference]: Finished difference Result 40700 states and 121546 transitions. [2022-02-09 01:15:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-09 01:15:39,546 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:39,638 INFO L225 Difference]: With dead ends: 40700 [2022-02-09 01:15:39,638 INFO L226 Difference]: Without dead ends: 40628 [2022-02-09 01:15:39,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2453, Invalid=9319, Unknown=0, NotChecked=0, Total=11772 [2022-02-09 01:15:39,639 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1075 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:39,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 2152 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:15:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40628 states. [2022-02-09 01:15:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40628 to 26557. [2022-02-09 01:15:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26557 states, 26556 states have (on average 3.0055731284832055) internal successors, (79816), 26556 states have internal predecessors, (79816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 79816 transitions. [2022-02-09 01:15:40,520 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 79816 transitions. Word has length 77 [2022-02-09 01:15:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:40,520 INFO L470 AbstractCegarLoop]: Abstraction has 26557 states and 79816 transitions. [2022-02-09 01:15:40,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 79816 transitions. [2022-02-09 01:15:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:40,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:40,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:40,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:40,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:40,770 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:40,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2067683619, now seen corresponding path program 59 times [2022-02-09 01:15:40,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:40,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825755743] [2022-02-09 01:15:40,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:40,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:40,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:40,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825755743] [2022-02-09 01:15:40,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825755743] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:40,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921584001] [2022-02-09 01:15:40,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:15:40,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:40,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:40,893 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:40,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-09 01:15:40,995 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-09 01:15:40,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:40,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 01:15:40,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:41,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:41,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921584001] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:41,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:41,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-09 01:15:41,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733072675] [2022-02-09 01:15:41,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:41,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-09 01:15:41,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-09 01:15:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-02-09 01:15:41,575 INFO L87 Difference]: Start difference. First operand 26557 states and 79816 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:44,783 INFO L93 Difference]: Finished difference Result 49127 states and 146632 transitions. [2022-02-09 01:15:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-09 01:15:44,783 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:44,902 INFO L225 Difference]: With dead ends: 49127 [2022-02-09 01:15:44,902 INFO L226 Difference]: Without dead ends: 49055 [2022-02-09 01:15:44,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7621 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3626, Invalid=17544, Unknown=0, NotChecked=0, Total=21170 [2022-02-09 01:15:44,904 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1108 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:44,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 2583 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:15:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49055 states. [2022-02-09 01:15:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49055 to 29053. [2022-02-09 01:15:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29053 states, 29052 states have (on average 3.0139060994079583) internal successors, (87560), 29052 states have internal predecessors, (87560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29053 states to 29053 states and 87560 transitions. [2022-02-09 01:15:45,738 INFO L78 Accepts]: Start accepts. Automaton has 29053 states and 87560 transitions. Word has length 77 [2022-02-09 01:15:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:45,738 INFO L470 AbstractCegarLoop]: Abstraction has 29053 states and 87560 transitions. [2022-02-09 01:15:45,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 29053 states and 87560 transitions. [2022-02-09 01:15:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:45,785 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:45,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:45,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-09 01:15:45,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:45,986 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1768261465, now seen corresponding path program 60 times [2022-02-09 01:15:45,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:45,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112775891] [2022-02-09 01:15:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:45,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:46,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:46,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112775891] [2022-02-09 01:15:46,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112775891] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:46,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636479583] [2022-02-09 01:15:46,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:15:46,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:46,132 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:46,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-09 01:15:46,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:15:46,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:46,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:46,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:46,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:46,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636479583] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:46,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:46,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-02-09 01:15:46,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721003329] [2022-02-09 01:15:46,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:46,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-09 01:15:46,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-09 01:15:46,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2022-02-09 01:15:46,884 INFO L87 Difference]: Start difference. First operand 29053 states and 87560 transitions. Second operand has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:49,655 INFO L93 Difference]: Finished difference Result 47531 states and 141242 transitions. [2022-02-09 01:15:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-09 01:15:49,655 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:49,765 INFO L225 Difference]: With dead ends: 47531 [2022-02-09 01:15:49,766 INFO L226 Difference]: Without dead ends: 47366 [2022-02-09 01:15:49,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5531 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2843, Invalid=14187, Unknown=0, NotChecked=0, Total=17030 [2022-02-09 01:15:49,767 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 811 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:49,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 3099 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:15:49,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47366 states. [2022-02-09 01:15:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47366 to 32281. [2022-02-09 01:15:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32281 states, 32280 states have (on average 3.000650557620818) internal successors, (96861), 32280 states have internal predecessors, (96861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32281 states to 32281 states and 96861 transitions. [2022-02-09 01:15:50,631 INFO L78 Accepts]: Start accepts. Automaton has 32281 states and 96861 transitions. Word has length 77 [2022-02-09 01:15:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:50,631 INFO L470 AbstractCegarLoop]: Abstraction has 32281 states and 96861 transitions. [2022-02-09 01:15:50,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 32281 states and 96861 transitions. [2022-02-09 01:15:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:50,683 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:50,683 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:50,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-09 01:15:50,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:50,885 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash 157467359, now seen corresponding path program 61 times [2022-02-09 01:15:50,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:50,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66544365] [2022-02-09 01:15:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:50,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:50,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:50,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66544365] [2022-02-09 01:15:50,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66544365] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:50,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654056092] [2022-02-09 01:15:50,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:15:50,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:50,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:50,988 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:50,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-09 01:15:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-09 01:15:51,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:51,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:51,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654056092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:51,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:51,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 31 [2022-02-09 01:15:51,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435875070] [2022-02-09 01:15:51,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:51,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:15:51,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:15:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:15:51,587 INFO L87 Difference]: Start difference. First operand 32281 states and 96861 transitions. Second operand has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:52,802 INFO L93 Difference]: Finished difference Result 36443 states and 108951 transitions. [2022-02-09 01:15:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 01:15:52,803 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:52,879 INFO L225 Difference]: With dead ends: 36443 [2022-02-09 01:15:52,879 INFO L226 Difference]: Without dead ends: 36371 [2022-02-09 01:15:52,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=813, Invalid=3879, Unknown=0, NotChecked=0, Total=4692 [2022-02-09 01:15:52,879 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 599 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:52,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 1881 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:15:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2022-02-09 01:15:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 32553. [2022-02-09 01:15:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32553 states, 32552 states have (on average 2.998924797247481) internal successors, (97621), 32552 states have internal predecessors, (97621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32553 states to 32553 states and 97621 transitions. [2022-02-09 01:15:53,575 INFO L78 Accepts]: Start accepts. Automaton has 32553 states and 97621 transitions. Word has length 77 [2022-02-09 01:15:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:53,576 INFO L470 AbstractCegarLoop]: Abstraction has 32553 states and 97621 transitions. [2022-02-09 01:15:53,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 32553 states and 97621 transitions. [2022-02-09 01:15:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:53,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:53,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:53,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-09 01:15:53,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-09 01:15:53,828 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash 304117667, now seen corresponding path program 62 times [2022-02-09 01:15:53,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:53,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967554081] [2022-02-09 01:15:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:53,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:53,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:53,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967554081] [2022-02-09 01:15:53,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967554081] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:53,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860231149] [2022-02-09 01:15:53,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:15:53,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:53,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:53,931 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:53,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-09 01:15:54,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:15:54,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:54,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:54,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:54,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:54,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860231149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:54,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:54,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-09 01:15:54,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257899856] [2022-02-09 01:15:54,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:54,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:15:54,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:15:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:15:54,710 INFO L87 Difference]: Start difference. First operand 32553 states and 97621 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:56,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:15:56,346 INFO L93 Difference]: Finished difference Result 46148 states and 138061 transitions. [2022-02-09 01:15:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-09 01:15:56,347 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:15:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:15:56,467 INFO L225 Difference]: With dead ends: 46148 [2022-02-09 01:15:56,467 INFO L226 Difference]: Without dead ends: 46076 [2022-02-09 01:15:56,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1403, Invalid=6253, Unknown=0, NotChecked=0, Total=7656 [2022-02-09 01:15:56,468 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 1028 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:15:56,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2145 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:15:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2022-02-09 01:15:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 33461. [2022-02-09 01:15:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33461 states, 33460 states have (on average 3.012253436939629) internal successors, (100790), 33460 states have internal predecessors, (100790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 100790 transitions. [2022-02-09 01:15:57,411 INFO L78 Accepts]: Start accepts. Automaton has 33461 states and 100790 transitions. Word has length 77 [2022-02-09 01:15:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:15:57,411 INFO L470 AbstractCegarLoop]: Abstraction has 33461 states and 100790 transitions. [2022-02-09 01:15:57,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:15:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 33461 states and 100790 transitions. [2022-02-09 01:15:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:15:57,463 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:15:57,464 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:15:57,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-09 01:15:57,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:57,664 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:15:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:15:57,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2147193931, now seen corresponding path program 63 times [2022-02-09 01:15:57,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:15:57,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130715467] [2022-02-09 01:15:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:15:57,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:15:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:15:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:57,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:15:57,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130715467] [2022-02-09 01:15:57,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130715467] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:15:57,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174410252] [2022-02-09 01:15:57,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:15:57,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:15:57,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:15:57,761 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:15:57,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-09 01:15:57,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-09 01:15:57,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:15:57,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:15:57,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:15:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:58,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:15:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:15:58,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174410252] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:15:58,569 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:15:58,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2022-02-09 01:15:58,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565318092] [2022-02-09 01:15:58,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:15:58,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:15:58,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:15:58,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:15:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:15:58,570 INFO L87 Difference]: Start difference. First operand 33461 states and 100790 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:00,711 INFO L93 Difference]: Finished difference Result 45082 states and 134091 transitions. [2022-02-09 01:16:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-09 01:16:00,712 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:00,909 INFO L225 Difference]: With dead ends: 45082 [2022-02-09 01:16:00,909 INFO L226 Difference]: Without dead ends: 44986 [2022-02-09 01:16:00,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4182 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2256, Invalid=10854, Unknown=0, NotChecked=0, Total=13110 [2022-02-09 01:16:00,913 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 999 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:00,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 2380 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:16:00,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44986 states. [2022-02-09 01:16:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44986 to 33505. [2022-02-09 01:16:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33505 states, 33504 states have (on average 3.01143147086915) internal successors, (100895), 33504 states have internal predecessors, (100895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33505 states to 33505 states and 100895 transitions. [2022-02-09 01:16:01,658 INFO L78 Accepts]: Start accepts. Automaton has 33505 states and 100895 transitions. Word has length 77 [2022-02-09 01:16:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:01,658 INFO L470 AbstractCegarLoop]: Abstraction has 33505 states and 100895 transitions. [2022-02-09 01:16:01,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 33505 states and 100895 transitions. [2022-02-09 01:16:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:01,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:01,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:01,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-09 01:16:01,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-09 01:16:01,913 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:01,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2048811427, now seen corresponding path program 64 times [2022-02-09 01:16:01,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:01,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498800742] [2022-02-09 01:16:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:01,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:02,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:02,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498800742] [2022-02-09 01:16:02,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498800742] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:02,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886093620] [2022-02-09 01:16:02,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:16:02,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:02,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:02,054 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:02,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-09 01:16:02,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:16:02,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:02,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:16:02,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:02,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:02,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886093620] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:02,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:02,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2022-02-09 01:16:02,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187069467] [2022-02-09 01:16:02,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:02,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:16:02,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:16:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:16:02,951 INFO L87 Difference]: Start difference. First operand 33505 states and 100895 transitions. Second operand has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:05,766 INFO L93 Difference]: Finished difference Result 58794 states and 174283 transitions. [2022-02-09 01:16:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-09 01:16:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:05,933 INFO L225 Difference]: With dead ends: 58794 [2022-02-09 01:16:05,933 INFO L226 Difference]: Without dead ends: 58614 [2022-02-09 01:16:05,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6726 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3346, Invalid=15560, Unknown=0, NotChecked=0, Total=18906 [2022-02-09 01:16:05,934 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1057 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:05,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 3136 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:16:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58614 states. [2022-02-09 01:16:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58614 to 41717. [2022-02-09 01:16:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41717 states, 41716 states have (on average 3.0048422667561607) internal successors, (125350), 41716 states have internal predecessors, (125350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41717 states to 41717 states and 125350 transitions. [2022-02-09 01:16:07,071 INFO L78 Accepts]: Start accepts. Automaton has 41717 states and 125350 transitions. Word has length 77 [2022-02-09 01:16:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:07,071 INFO L470 AbstractCegarLoop]: Abstraction has 41717 states and 125350 transitions. [2022-02-09 01:16:07,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 41717 states and 125350 transitions. [2022-02-09 01:16:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:07,330 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:07,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:07,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:07,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-09 01:16:07,559 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1711934855, now seen corresponding path program 65 times [2022-02-09 01:16:07,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:07,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050819054] [2022-02-09 01:16:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:07,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:07,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:07,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050819054] [2022-02-09 01:16:07,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050819054] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:07,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036088563] [2022-02-09 01:16:07,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:16:07,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:07,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:07,681 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:07,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-09 01:16:07,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-09 01:16:07,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:07,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:16:07,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:08,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:08,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036088563] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:08,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:08,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2022-02-09 01:16:08,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164744167] [2022-02-09 01:16:08,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:08,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-09 01:16:08,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-09 01:16:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-02-09 01:16:08,373 INFO L87 Difference]: Start difference. First operand 41717 states and 125350 transitions. Second operand has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:10,849 INFO L93 Difference]: Finished difference Result 55045 states and 162992 transitions. [2022-02-09 01:16:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-09 01:16:10,849 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:10,991 INFO L225 Difference]: With dead ends: 55045 [2022-02-09 01:16:10,991 INFO L226 Difference]: Without dead ends: 54949 [2022-02-09 01:16:10,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4967 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2715, Invalid=12047, Unknown=0, NotChecked=0, Total=14762 [2022-02-09 01:16:10,992 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 1035 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:10,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 2762 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:16:11,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54949 states. [2022-02-09 01:16:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54949 to 40477. [2022-02-09 01:16:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40477 states, 40476 states have (on average 3.004150607767566) internal successors, (121596), 40476 states have internal predecessors, (121596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40477 states to 40477 states and 121596 transitions. [2022-02-09 01:16:12,221 INFO L78 Accepts]: Start accepts. Automaton has 40477 states and 121596 transitions. Word has length 77 [2022-02-09 01:16:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:12,221 INFO L470 AbstractCegarLoop]: Abstraction has 40477 states and 121596 transitions. [2022-02-09 01:16:12,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 40477 states and 121596 transitions. [2022-02-09 01:16:12,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:12,291 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:12,291 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:12,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:12,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-09 01:16:12,492 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash 921558363, now seen corresponding path program 66 times [2022-02-09 01:16:12,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:12,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679975637] [2022-02-09 01:16:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:12,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:12,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:12,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679975637] [2022-02-09 01:16:12,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679975637] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:12,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551793919] [2022-02-09 01:16:12,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:16:12,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:12,613 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:12,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-09 01:16:12,699 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-09 01:16:12,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:12,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:16:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:12,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:13,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551793919] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:13,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:13,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-02-09 01:16:13,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181935233] [2022-02-09 01:16:13,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:13,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:16:13,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:13,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:16:13,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:16:13,438 INFO L87 Difference]: Start difference. First operand 40477 states and 121596 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:15,193 INFO L93 Difference]: Finished difference Result 53143 states and 159305 transitions. [2022-02-09 01:16:15,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-09 01:16:15,193 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:15,333 INFO L225 Difference]: With dead ends: 53143 [2022-02-09 01:16:15,333 INFO L226 Difference]: Without dead ends: 52963 [2022-02-09 01:16:15,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1166, Invalid=6844, Unknown=0, NotChecked=0, Total=8010 [2022-02-09 01:16:15,334 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 542 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:15,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 2236 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:16:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52963 states. [2022-02-09 01:16:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52963 to 46293. [2022-02-09 01:16:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46293 states, 46292 states have (on average 3.011017022379677) internal successors, (139386), 46292 states have internal predecessors, (139386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46293 states to 46293 states and 139386 transitions. [2022-02-09 01:16:16,665 INFO L78 Accepts]: Start accepts. Automaton has 46293 states and 139386 transitions. Word has length 77 [2022-02-09 01:16:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:16,666 INFO L470 AbstractCegarLoop]: Abstraction has 46293 states and 139386 transitions. [2022-02-09 01:16:16,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 46293 states and 139386 transitions. [2022-02-09 01:16:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:16,746 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:16,746 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:16,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:16,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-09 01:16:16,947 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 265233891, now seen corresponding path program 67 times [2022-02-09 01:16:16,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:16,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091295184] [2022-02-09 01:16:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:16,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:17,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:17,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091295184] [2022-02-09 01:16:17,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091295184] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:17,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538270948] [2022-02-09 01:16:17,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:16:17,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:17,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:17,071 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:17,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-09 01:16:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:17,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:16:17,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:17,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:17,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538270948] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:17,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:17,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-09 01:16:17,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248025620] [2022-02-09 01:16:17,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:17,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:16:17,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:17,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:16:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:16:17,697 INFO L87 Difference]: Start difference. First operand 46293 states and 139386 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:19,910 INFO L93 Difference]: Finished difference Result 58970 states and 176096 transitions. [2022-02-09 01:16:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-09 01:16:19,911 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:20,080 INFO L225 Difference]: With dead ends: 58970 [2022-02-09 01:16:20,080 INFO L226 Difference]: Without dead ends: 58874 [2022-02-09 01:16:20,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1886, Invalid=9244, Unknown=0, NotChecked=0, Total=11130 [2022-02-09 01:16:20,081 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 932 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:20,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2125 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 01:16:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58874 states. [2022-02-09 01:16:21,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58874 to 49917. [2022-02-09 01:16:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49917 states, 49916 states have (on average 3.020915137430884) internal successors, (150792), 49916 states have internal predecessors, (150792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49917 states to 49917 states and 150792 transitions. [2022-02-09 01:16:21,608 INFO L78 Accepts]: Start accepts. Automaton has 49917 states and 150792 transitions. Word has length 77 [2022-02-09 01:16:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:21,609 INFO L470 AbstractCegarLoop]: Abstraction has 49917 states and 150792 transitions. [2022-02-09 01:16:21,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 49917 states and 150792 transitions. [2022-02-09 01:16:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:21,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:21,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:21,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-09 01:16:21,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:21,888 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2108889589, now seen corresponding path program 68 times [2022-02-09 01:16:21,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:21,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698559579] [2022-02-09 01:16:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:21,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:21,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:21,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698559579] [2022-02-09 01:16:21,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698559579] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:21,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719817899] [2022-02-09 01:16:21,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:16:21,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:21,994 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:21,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-09 01:16:22,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:16:22,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:22,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:16:22,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:22,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:22,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719817899] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:22,621 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:22,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-09 01:16:22,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887210881] [2022-02-09 01:16:22,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:22,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:16:22,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:22,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:16:22,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:16:22,622 INFO L87 Difference]: Start difference. First operand 49917 states and 150792 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:23,934 INFO L93 Difference]: Finished difference Result 52965 states and 159059 transitions. [2022-02-09 01:16:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-09 01:16:23,934 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:24,068 INFO L225 Difference]: With dead ends: 52965 [2022-02-09 01:16:24,068 INFO L226 Difference]: Without dead ends: 52845 [2022-02-09 01:16:24,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=985, Invalid=4565, Unknown=0, NotChecked=0, Total=5550 [2022-02-09 01:16:24,069 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 618 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:24,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1753 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:16:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52845 states. [2022-02-09 01:16:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52845 to 50573. [2022-02-09 01:16:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50573 states, 50572 states have (on average 3.0204856442300088) internal successors, (152752), 50572 states have internal predecessors, (152752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50573 states to 50573 states and 152752 transitions. [2022-02-09 01:16:25,459 INFO L78 Accepts]: Start accepts. Automaton has 50573 states and 152752 transitions. Word has length 77 [2022-02-09 01:16:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:25,459 INFO L470 AbstractCegarLoop]: Abstraction has 50573 states and 152752 transitions. [2022-02-09 01:16:25,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:25,459 INFO L276 IsEmpty]: Start isEmpty. Operand 50573 states and 152752 transitions. [2022-02-09 01:16:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:25,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:25,554 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:25,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-09 01:16:25,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:25,754 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1704232665, now seen corresponding path program 69 times [2022-02-09 01:16:25,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:25,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118880567] [2022-02-09 01:16:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:25,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:25,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:25,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118880567] [2022-02-09 01:16:25,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118880567] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:25,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713783759] [2022-02-09 01:16:25,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:16:25,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:25,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:25,888 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:25,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-09 01:16:25,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:16:25,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:25,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 01:16:25,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:26,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:26,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713783759] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:26,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:26,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 32 [2022-02-09 01:16:26,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007259248] [2022-02-09 01:16:26,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:26,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:16:26,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:26,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:16:26,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:16:26,709 INFO L87 Difference]: Start difference. First operand 50573 states and 152752 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:28,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:28,861 INFO L93 Difference]: Finished difference Result 55679 states and 167021 transitions. [2022-02-09 01:16:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-09 01:16:28,861 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:28,996 INFO L225 Difference]: With dead ends: 55679 [2022-02-09 01:16:28,996 INFO L226 Difference]: Without dead ends: 55619 [2022-02-09 01:16:28,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1900, Invalid=10756, Unknown=0, NotChecked=0, Total=12656 [2022-02-09 01:16:28,997 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 687 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:28,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 2206 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:16:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55619 states. [2022-02-09 01:16:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55619 to 52498. [2022-02-09 01:16:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52498 states, 52497 states have (on average 3.0245918814408443) internal successors, (158782), 52497 states have internal predecessors, (158782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52498 states to 52498 states and 158782 transitions. [2022-02-09 01:16:30,444 INFO L78 Accepts]: Start accepts. Automaton has 52498 states and 158782 transitions. Word has length 77 [2022-02-09 01:16:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:30,445 INFO L470 AbstractCegarLoop]: Abstraction has 52498 states and 158782 transitions. [2022-02-09 01:16:30,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 52498 states and 158782 transitions. [2022-02-09 01:16:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:30,542 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:30,542 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:30,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-09 01:16:30,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:30,742 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1979648995, now seen corresponding path program 70 times [2022-02-09 01:16:30,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:30,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195725657] [2022-02-09 01:16:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:30,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:30,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:30,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195725657] [2022-02-09 01:16:30,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195725657] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:30,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134086700] [2022-02-09 01:16:30,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:16:30,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:30,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:30,908 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:30,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-09 01:16:30,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:16:30,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:30,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:16:30,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:31,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:16:31,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134086700] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:31,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:31,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-09 01:16:31,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940944833] [2022-02-09 01:16:31,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:31,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-09 01:16:31,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:31,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-09 01:16:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2022-02-09 01:16:31,659 INFO L87 Difference]: Start difference. First operand 52498 states and 158782 transitions. Second operand has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:33,890 INFO L93 Difference]: Finished difference Result 56930 states and 170437 transitions. [2022-02-09 01:16:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-09 01:16:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:34,177 INFO L225 Difference]: With dead ends: 56930 [2022-02-09 01:16:34,178 INFO L226 Difference]: Without dead ends: 56720 [2022-02-09 01:16:34,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2363, Invalid=9847, Unknown=0, NotChecked=0, Total=12210 [2022-02-09 01:16:34,179 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 751 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:34,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 2152 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 01:16:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56720 states. [2022-02-09 01:16:35,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56720 to 50461. [2022-02-09 01:16:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50461 states, 50460 states have (on average 3.021799445105034) internal successors, (152480), 50460 states have internal predecessors, (152480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50461 states to 50461 states and 152480 transitions. [2022-02-09 01:16:35,527 INFO L78 Accepts]: Start accepts. Automaton has 50461 states and 152480 transitions. Word has length 77 [2022-02-09 01:16:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:35,527 INFO L470 AbstractCegarLoop]: Abstraction has 50461 states and 152480 transitions. [2022-02-09 01:16:35,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:35,528 INFO L276 IsEmpty]: Start isEmpty. Operand 50461 states and 152480 transitions. [2022-02-09 01:16:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:35,638 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:35,638 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:35,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-09 01:16:35,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-02-09 01:16:35,839 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:35,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1781097287, now seen corresponding path program 71 times [2022-02-09 01:16:35,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:35,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972062795] [2022-02-09 01:16:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:35,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:35,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:35,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972062795] [2022-02-09 01:16:35,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972062795] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:35,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988111466] [2022-02-09 01:16:35,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:16:35,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:35,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:35,960 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:35,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-09 01:16:36,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-09 01:16:36,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:36,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 01:16:36,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:36,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:36,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988111466] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:36,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:36,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-02-09 01:16:36,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894171874] [2022-02-09 01:16:36,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:36,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:16:36,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:16:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:16:36,809 INFO L87 Difference]: Start difference. First operand 50461 states and 152480 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:38,107 INFO L93 Difference]: Finished difference Result 65246 states and 194541 transitions. [2022-02-09 01:16:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-09 01:16:38,107 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:38,494 INFO L225 Difference]: With dead ends: 65246 [2022-02-09 01:16:38,494 INFO L226 Difference]: Without dead ends: 65198 [2022-02-09 01:16:38,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=792, Invalid=4178, Unknown=0, NotChecked=0, Total=4970 [2022-02-09 01:16:38,495 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 574 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:38,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1965 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:16:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65198 states. [2022-02-09 01:16:39,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65198 to 50125. [2022-02-09 01:16:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50125 states, 50124 states have (on average 3.022025377064879) internal successors, (151476), 50124 states have internal predecessors, (151476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50125 states to 50125 states and 151476 transitions. [2022-02-09 01:16:39,997 INFO L78 Accepts]: Start accepts. Automaton has 50125 states and 151476 transitions. Word has length 77 [2022-02-09 01:16:39,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:39,997 INFO L470 AbstractCegarLoop]: Abstraction has 50125 states and 151476 transitions. [2022-02-09 01:16:39,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 50125 states and 151476 transitions. [2022-02-09 01:16:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:40,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:40,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:40,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:40,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:40,379 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash -401938913, now seen corresponding path program 72 times [2022-02-09 01:16:40,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:40,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762062254] [2022-02-09 01:16:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:40,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:40,495 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:40,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762062254] [2022-02-09 01:16:40,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762062254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:40,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440707048] [2022-02-09 01:16:40,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:16:40,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:40,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:40,496 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:40,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-09 01:16:40,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:16:40,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:40,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:16:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:40,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:16:41,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440707048] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:41,484 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:41,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-02-09 01:16:41,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066091369] [2022-02-09 01:16:41,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:41,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:16:41,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:16:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:16:41,486 INFO L87 Difference]: Start difference. First operand 50125 states and 151476 transitions. Second operand has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:43,424 INFO L93 Difference]: Finished difference Result 55334 states and 166142 transitions. [2022-02-09 01:16:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-09 01:16:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:43,580 INFO L225 Difference]: With dead ends: 55334 [2022-02-09 01:16:43,580 INFO L226 Difference]: Without dead ends: 55304 [2022-02-09 01:16:43,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1555, Invalid=7565, Unknown=0, NotChecked=0, Total=9120 [2022-02-09 01:16:43,581 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 635 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:43,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 1641 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:16:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55304 states. [2022-02-09 01:16:44,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55304 to 52449. [2022-02-09 01:16:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52449 states, 52448 states have (on average 3.0233183343502135) internal successors, (158567), 52448 states have internal predecessors, (158567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52449 states to 52449 states and 158567 transitions. [2022-02-09 01:16:44,962 INFO L78 Accepts]: Start accepts. Automaton has 52449 states and 158567 transitions. Word has length 77 [2022-02-09 01:16:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:44,963 INFO L470 AbstractCegarLoop]: Abstraction has 52449 states and 158567 transitions. [2022-02-09 01:16:44,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 52449 states and 158567 transitions. [2022-02-09 01:16:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:45,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:45,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:45,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:45,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:45,277 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1940822727, now seen corresponding path program 73 times [2022-02-09 01:16:45,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:45,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897346532] [2022-02-09 01:16:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:45,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:45,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:45,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897346532] [2022-02-09 01:16:45,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897346532] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:45,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112000503] [2022-02-09 01:16:45,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:16:45,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:45,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:45,403 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:45,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-09 01:16:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:45,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:16:45,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:45,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:46,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112000503] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:46,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:46,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-02-09 01:16:46,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374651367] [2022-02-09 01:16:46,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:46,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:16:46,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:16:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:16:46,374 INFO L87 Difference]: Start difference. First operand 52449 states and 158567 transitions. Second operand has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:47,807 INFO L93 Difference]: Finished difference Result 55071 states and 165362 transitions. [2022-02-09 01:16:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-09 01:16:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:48,175 INFO L225 Difference]: With dead ends: 55071 [2022-02-09 01:16:48,175 INFO L226 Difference]: Without dead ends: 54987 [2022-02-09 01:16:48,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=962, Invalid=5200, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 01:16:48,176 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 550 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:48,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1874 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:16:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54987 states. [2022-02-09 01:16:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54987 to 51673. [2022-02-09 01:16:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51673 states, 51672 states have (on average 3.0223912370335966) internal successors, (156173), 51672 states have internal predecessors, (156173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51673 states to 51673 states and 156173 transitions. [2022-02-09 01:16:49,607 INFO L78 Accepts]: Start accepts. Automaton has 51673 states and 156173 transitions. Word has length 77 [2022-02-09 01:16:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:49,607 INFO L470 AbstractCegarLoop]: Abstraction has 51673 states and 156173 transitions. [2022-02-09 01:16:49,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 51673 states and 156173 transitions. [2022-02-09 01:16:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:49,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:49,718 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:49,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:49,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-02-09 01:16:49,918 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:49,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash 848278107, now seen corresponding path program 74 times [2022-02-09 01:16:49,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:49,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804427589] [2022-02-09 01:16:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:49,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:50,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:50,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804427589] [2022-02-09 01:16:50,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804427589] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:50,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783108222] [2022-02-09 01:16:50,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:16:50,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:50,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:50,052 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:50,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-09 01:16:50,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:16:50,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:50,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:16:50,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:50,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:50,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783108222] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:50,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:50,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-02-09 01:16:50,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740596753] [2022-02-09 01:16:50,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:50,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:16:50,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:16:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:16:50,780 INFO L87 Difference]: Start difference. First operand 51673 states and 156173 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:52,469 INFO L93 Difference]: Finished difference Result 54055 states and 162652 transitions. [2022-02-09 01:16:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-09 01:16:52,470 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:52,664 INFO L225 Difference]: With dead ends: 54055 [2022-02-09 01:16:52,664 INFO L226 Difference]: Without dead ends: 53947 [2022-02-09 01:16:52,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=804, Invalid=4598, Unknown=0, NotChecked=0, Total=5402 [2022-02-09 01:16:52,665 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 414 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:52,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 2052 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:16:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53947 states. [2022-02-09 01:16:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53947 to 51757. [2022-02-09 01:16:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51757 states, 51756 states have (on average 3.022490146070021) internal successors, (156432), 51756 states have internal predecessors, (156432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51757 states to 51757 states and 156432 transitions. [2022-02-09 01:16:54,116 INFO L78 Accepts]: Start accepts. Automaton has 51757 states and 156432 transitions. Word has length 77 [2022-02-09 01:16:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:16:54,116 INFO L470 AbstractCegarLoop]: Abstraction has 51757 states and 156432 transitions. [2022-02-09 01:16:54,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 51757 states and 156432 transitions. [2022-02-09 01:16:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:16:54,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:16:54,220 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:16:54,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-09 01:16:54,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-09 01:16:54,421 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:16:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:16:54,423 INFO L85 PathProgramCache]: Analyzing trace with hash 191953635, now seen corresponding path program 75 times [2022-02-09 01:16:54,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:16:54,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902795245] [2022-02-09 01:16:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:16:54,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:16:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:16:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:54,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:16:54,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902795245] [2022-02-09 01:16:54,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902795245] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:16:54,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302078641] [2022-02-09 01:16:54,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:16:54,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:16:54,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:16:54,534 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:16:54,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-09 01:16:54,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-09 01:16:54,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:16:54,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:16:54,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:16:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:54,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:16:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:16:55,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302078641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:16:55,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:16:55,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-02-09 01:16:55,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505983856] [2022-02-09 01:16:55,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:16:55,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-09 01:16:55,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:16:55,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-09 01:16:55,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-02-09 01:16:55,200 INFO L87 Difference]: Start difference. First operand 51757 states and 156432 transitions. Second operand has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:16:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:16:58,803 INFO L93 Difference]: Finished difference Result 71838 states and 214721 transitions. [2022-02-09 01:16:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-09 01:16:58,803 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:16:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:16:59,015 INFO L225 Difference]: With dead ends: 71838 [2022-02-09 01:16:59,015 INFO L226 Difference]: Without dead ends: 71754 [2022-02-09 01:16:59,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3599, Invalid=17571, Unknown=0, NotChecked=0, Total=21170 [2022-02-09 01:16:59,016 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 992 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:16:59,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 3329 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:16:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71754 states. [2022-02-09 01:17:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71754 to 52517. [2022-02-09 01:17:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52517 states, 52516 states have (on average 3.0226597608347934) internal successors, (158738), 52516 states have internal predecessors, (158738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 158738 transitions. [2022-02-09 01:17:00,879 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 158738 transitions. Word has length 77 [2022-02-09 01:17:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:00,879 INFO L470 AbstractCegarLoop]: Abstraction has 52517 states and 158738 transitions. [2022-02-09 01:17:00,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 158738 transitions. [2022-02-09 01:17:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:17:01,035 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:01,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:01,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:01,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:01,236 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2035609333, now seen corresponding path program 76 times [2022-02-09 01:17:01,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:01,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161418660] [2022-02-09 01:17:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:01,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:01,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:01,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161418660] [2022-02-09 01:17:01,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161418660] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:01,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587825809] [2022-02-09 01:17:01,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:17:01,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:01,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:01,347 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:01,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-09 01:17:01,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:17:01,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:01,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:17:01,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:01,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:02,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587825809] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:02,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:02,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-09 01:17:02,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796843294] [2022-02-09 01:17:02,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:02,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:17:02,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:17:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:17:02,016 INFO L87 Difference]: Start difference. First operand 52517 states and 158738 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:03,377 INFO L93 Difference]: Finished difference Result 54275 states and 163351 transitions. [2022-02-09 01:17:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-09 01:17:03,377 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:17:03,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:03,564 INFO L225 Difference]: With dead ends: 54275 [2022-02-09 01:17:03,564 INFO L226 Difference]: Without dead ends: 54179 [2022-02-09 01:17:03,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=827, Invalid=4003, Unknown=0, NotChecked=0, Total=4830 [2022-02-09 01:17:03,565 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 551 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:03,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 1678 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:17:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54179 states. [2022-02-09 01:17:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54179 to 52905. [2022-02-09 01:17:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52905 states, 52904 states have (on average 3.022474671102374) internal successors, (159901), 52904 states have internal predecessors, (159901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52905 states to 52905 states and 159901 transitions. [2022-02-09 01:17:04,938 INFO L78 Accepts]: Start accepts. Automaton has 52905 states and 159901 transitions. Word has length 77 [2022-02-09 01:17:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:04,938 INFO L470 AbstractCegarLoop]: Abstraction has 52905 states and 159901 transitions. [2022-02-09 01:17:04,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52905 states and 159901 transitions. [2022-02-09 01:17:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:17:05,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:05,039 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:05,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:05,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:05,240 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 223279015, now seen corresponding path program 77 times [2022-02-09 01:17:05,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:05,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321225906] [2022-02-09 01:17:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:05,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:05,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:05,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321225906] [2022-02-09 01:17:05,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321225906] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:05,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299956190] [2022-02-09 01:17:05,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:17:05,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:05,364 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:05,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-09 01:17:05,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:17:05,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:05,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:17:05,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:05,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 01:17:06,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299956190] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:06,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:06,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-09 01:17:06,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728761897] [2022-02-09 01:17:06,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:06,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-09 01:17:06,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-09 01:17:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1124, Unknown=0, NotChecked=0, Total=1332 [2022-02-09 01:17:06,105 INFO L87 Difference]: Start difference. First operand 52905 states and 159901 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:08,172 INFO L93 Difference]: Finished difference Result 58061 states and 173874 transitions. [2022-02-09 01:17:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-09 01:17:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:17:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:08,560 INFO L225 Difference]: With dead ends: 58061 [2022-02-09 01:17:08,561 INFO L226 Difference]: Without dead ends: 57911 [2022-02-09 01:17:08,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3034 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1763, Invalid=7743, Unknown=0, NotChecked=0, Total=9506 [2022-02-09 01:17:08,561 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 758 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:08,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 2951 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:17:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57911 states. [2022-02-09 01:17:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57911 to 53649. [2022-02-09 01:17:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53649 states, 53648 states have (on average 3.02108186698479) internal successors, (162075), 53648 states have internal predecessors, (162075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53649 states to 53649 states and 162075 transitions. [2022-02-09 01:17:10,058 INFO L78 Accepts]: Start accepts. Automaton has 53649 states and 162075 transitions. Word has length 77 [2022-02-09 01:17:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:10,058 INFO L470 AbstractCegarLoop]: Abstraction has 53649 states and 162075 transitions. [2022-02-09 01:17:10,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 53649 states and 162075 transitions. [2022-02-09 01:17:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:17:10,164 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:10,164 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:10,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:10,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:10,365 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash -155653451, now seen corresponding path program 78 times [2022-02-09 01:17:10,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:10,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51275830] [2022-02-09 01:17:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:10,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:10,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:10,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51275830] [2022-02-09 01:17:10,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51275830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:10,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401349456] [2022-02-09 01:17:10,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:17:10,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:10,499 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:10,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-09 01:17:10,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-09 01:17:10,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:10,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 01:17:10,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:10,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 01:17:11,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401349456] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:11,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:11,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 31 [2022-02-09 01:17:11,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73746971] [2022-02-09 01:17:11,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:11,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:17:11,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:17:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:17:11,163 INFO L87 Difference]: Start difference. First operand 53649 states and 162075 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:12,627 INFO L93 Difference]: Finished difference Result 60411 states and 181558 transitions. [2022-02-09 01:17:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 01:17:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:17:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:12,810 INFO L225 Difference]: With dead ends: 60411 [2022-02-09 01:17:12,810 INFO L226 Difference]: Without dead ends: 60315 [2022-02-09 01:17:12,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2022-02-09 01:17:12,811 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 526 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:12,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2161 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 01:17:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60315 states. [2022-02-09 01:17:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60315 to 56021. [2022-02-09 01:17:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56021 states, 56020 states have (on average 3.023884327026062) internal successors, (169398), 56020 states have internal predecessors, (169398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56021 states to 56021 states and 169398 transitions. [2022-02-09 01:17:14,474 INFO L78 Accepts]: Start accepts. Automaton has 56021 states and 169398 transitions. Word has length 77 [2022-02-09 01:17:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:14,474 INFO L470 AbstractCegarLoop]: Abstraction has 56021 states and 169398 transitions. [2022-02-09 01:17:14,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 56021 states and 169398 transitions. [2022-02-09 01:17:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-09 01:17:14,907 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:14,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:14,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:15,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:15,108 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash 31792739, now seen corresponding path program 79 times [2022-02-09 01:17:15,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:15,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105478371] [2022-02-09 01:17:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:15,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:15,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:15,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105478371] [2022-02-09 01:17:15,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105478371] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:15,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631450545] [2022-02-09 01:17:15,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:17:15,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:15,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:15,234 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:15,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-09 01:17:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:15,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-09 01:17:15,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:15,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 01:17:15,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631450545] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:15,992 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:15,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-09 01:17:15,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127019366] [2022-02-09 01:17:15,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:15,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-09 01:17:15,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-09 01:17:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2022-02-09 01:17:15,994 INFO L87 Difference]: Start difference. First operand 56021 states and 169398 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:18,175 INFO L93 Difference]: Finished difference Result 63634 states and 190182 transitions. [2022-02-09 01:17:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-09 01:17:18,175 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-09 01:17:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:18,380 INFO L225 Difference]: With dead ends: 63634 [2022-02-09 01:17:18,380 INFO L226 Difference]: Without dead ends: 63469 [2022-02-09 01:17:18,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3205 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1981, Invalid=8321, Unknown=0, NotChecked=0, Total=10302 [2022-02-09 01:17:18,381 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 782 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:18,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 2609 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:17:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63469 states. [2022-02-09 01:17:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63469 to 54757. [2022-02-09 01:17:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54757 states, 54756 states have (on average 3.020052596975674) internal successors, (165366), 54756 states have internal predecessors, (165366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54757 states to 54757 states and 165366 transitions. [2022-02-09 01:17:19,929 INFO L78 Accepts]: Start accepts. Automaton has 54757 states and 165366 transitions. Word has length 77 [2022-02-09 01:17:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:19,930 INFO L470 AbstractCegarLoop]: Abstraction has 54757 states and 165366 transitions. [2022-02-09 01:17:19,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 54757 states and 165366 transitions. [2022-02-09 01:17:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:17:20,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:20,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:20,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:20,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:20,259 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1890973665, now seen corresponding path program 80 times [2022-02-09 01:17:20,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:20,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417987803] [2022-02-09 01:17:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:20,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:20,331 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:20,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417987803] [2022-02-09 01:17:20,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417987803] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:20,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887320169] [2022-02-09 01:17:20,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:17:20,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:20,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:20,332 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:20,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-09 01:17:20,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:17:20,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:20,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-09 01:17:20,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:20,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:21,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887320169] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:21,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:21,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2022-02-09 01:17:21,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187493984] [2022-02-09 01:17:21,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:21,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-09 01:17:21,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-09 01:17:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-09 01:17:21,532 INFO L87 Difference]: Start difference. First operand 54757 states and 165366 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:22,378 INFO L93 Difference]: Finished difference Result 86252 states and 263480 transitions. [2022-02-09 01:17:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-09 01:17:22,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:17:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:22,651 INFO L225 Difference]: With dead ends: 86252 [2022-02-09 01:17:22,652 INFO L226 Difference]: Without dead ends: 86024 [2022-02-09 01:17:22,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-02-09 01:17:22,652 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 290 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:22,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1009 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:17:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86024 states. [2022-02-09 01:17:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86024 to 78062. [2022-02-09 01:17:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78062 states, 78061 states have (on average 3.033986241529061) internal successors, (236836), 78061 states have internal predecessors, (236836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78062 states to 78062 states and 236836 transitions. [2022-02-09 01:17:24,910 INFO L78 Accepts]: Start accepts. Automaton has 78062 states and 236836 transitions. Word has length 79 [2022-02-09 01:17:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:24,910 INFO L470 AbstractCegarLoop]: Abstraction has 78062 states and 236836 transitions. [2022-02-09 01:17:24,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 78062 states and 236836 transitions. [2022-02-09 01:17:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:17:25,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:25,072 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:25,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:25,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-02-09 01:17:25,273 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:25,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1781177015, now seen corresponding path program 81 times [2022-02-09 01:17:25,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:25,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867923571] [2022-02-09 01:17:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:25,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:25,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:25,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867923571] [2022-02-09 01:17:25,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867923571] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:25,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843250871] [2022-02-09 01:17:25,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:17:25,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:25,462 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:25,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-09 01:17:25,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-09 01:17:25,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 01:17:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:25,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:25,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843250871] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:25,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:25,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 22 [2022-02-09 01:17:25,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352154988] [2022-02-09 01:17:25,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:25,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 01:17:25,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 01:17:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-02-09 01:17:25,928 INFO L87 Difference]: Start difference. First operand 78062 states and 236836 transitions. Second operand has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:27,278 INFO L93 Difference]: Finished difference Result 90363 states and 273656 transitions. [2022-02-09 01:17:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-09 01:17:27,279 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:17:27,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:27,573 INFO L225 Difference]: With dead ends: 90363 [2022-02-09 01:17:27,573 INFO L226 Difference]: Without dead ends: 90348 [2022-02-09 01:17:27,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=342, Invalid=1728, Unknown=0, NotChecked=0, Total=2070 [2022-02-09 01:17:27,574 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 388 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:27,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 2010 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:17:27,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90348 states. [2022-02-09 01:17:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90348 to 81518. [2022-02-09 01:17:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81518 states, 81517 states have (on average 3.0429480967160223) internal successors, (248052), 81517 states have internal predecessors, (248052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81518 states to 81518 states and 248052 transitions. [2022-02-09 01:17:30,280 INFO L78 Accepts]: Start accepts. Automaton has 81518 states and 248052 transitions. Word has length 79 [2022-02-09 01:17:30,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:30,280 INFO L470 AbstractCegarLoop]: Abstraction has 81518 states and 248052 transitions. [2022-02-09 01:17:30,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 81518 states and 248052 transitions. [2022-02-09 01:17:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:17:30,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:30,465 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:30,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:30,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:30,666 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:30,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:30,666 INFO L85 PathProgramCache]: Analyzing trace with hash -273105791, now seen corresponding path program 82 times [2022-02-09 01:17:30,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:30,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738956882] [2022-02-09 01:17:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:30,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:30,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:30,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738956882] [2022-02-09 01:17:30,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738956882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:30,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97802506] [2022-02-09 01:17:30,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:17:30,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:30,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:30,788 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:30,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-09 01:17:30,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:17:30,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:30,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:17:30,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:31,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:31,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97802506] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:31,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:31,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-02-09 01:17:31,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522156845] [2022-02-09 01:17:31,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:31,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:17:31,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:31,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:17:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:17:31,710 INFO L87 Difference]: Start difference. First operand 81518 states and 248052 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:36,514 INFO L93 Difference]: Finished difference Result 115213 states and 345840 transitions. [2022-02-09 01:17:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-02-09 01:17:36,514 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:17:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:36,927 INFO L225 Difference]: With dead ends: 115213 [2022-02-09 01:17:36,928 INFO L226 Difference]: Without dead ends: 115003 [2022-02-09 01:17:36,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3727, Invalid=23995, Unknown=0, NotChecked=0, Total=27722 [2022-02-09 01:17:36,929 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1001 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:36,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3465 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:17:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115003 states. [2022-02-09 01:17:39,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115003 to 84166. [2022-02-09 01:17:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84166 states, 84165 states have (on average 3.038578981762015) internal successors, (255742), 84165 states have internal predecessors, (255742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84166 states to 84166 states and 255742 transitions. [2022-02-09 01:17:39,788 INFO L78 Accepts]: Start accepts. Automaton has 84166 states and 255742 transitions. Word has length 79 [2022-02-09 01:17:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:39,788 INFO L470 AbstractCegarLoop]: Abstraction has 84166 states and 255742 transitions. [2022-02-09 01:17:39,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 84166 states and 255742 transitions. [2022-02-09 01:17:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:17:39,970 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:39,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:39,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:40,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:40,192 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:40,192 INFO L85 PathProgramCache]: Analyzing trace with hash 261115223, now seen corresponding path program 83 times [2022-02-09 01:17:40,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:40,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365720395] [2022-02-09 01:17:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:40,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:40,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:40,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365720395] [2022-02-09 01:17:40,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365720395] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:40,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058505282] [2022-02-09 01:17:40,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:17:40,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:40,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:40,318 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:40,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-09 01:17:40,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-09 01:17:40,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:40,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-09 01:17:40,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:40,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:41,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058505282] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:41,839 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:41,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-02-09 01:17:41,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219541756] [2022-02-09 01:17:41,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:41,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-09 01:17:41,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-09 01:17:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1218, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 01:17:41,840 INFO L87 Difference]: Start difference. First operand 84166 states and 255742 transitions. Second operand has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:46,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:46,749 INFO L93 Difference]: Finished difference Result 128331 states and 384407 transitions. [2022-02-09 01:17:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-02-09 01:17:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:17:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:47,215 INFO L225 Difference]: With dead ends: 128331 [2022-02-09 01:17:47,215 INFO L226 Difference]: Without dead ends: 128235 [2022-02-09 01:17:47,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8998 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3968, Invalid=20524, Unknown=0, NotChecked=0, Total=24492 [2022-02-09 01:17:47,216 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 1324 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:47,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 3333 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:17:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128235 states. [2022-02-09 01:17:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128235 to 84626. [2022-02-09 01:17:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84626 states, 84625 states have (on average 3.0380502215657312) internal successors, (257095), 84625 states have internal predecessors, (257095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84626 states to 84626 states and 257095 transitions. [2022-02-09 01:17:50,264 INFO L78 Accepts]: Start accepts. Automaton has 84626 states and 257095 transitions. Word has length 79 [2022-02-09 01:17:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:17:50,264 INFO L470 AbstractCegarLoop]: Abstraction has 84626 states and 257095 transitions. [2022-02-09 01:17:50,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 84626 states and 257095 transitions. [2022-02-09 01:17:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:17:50,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:17:50,450 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:17:50,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-09 01:17:50,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:50,650 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:17:50,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:17:50,651 INFO L85 PathProgramCache]: Analyzing trace with hash 402406013, now seen corresponding path program 84 times [2022-02-09 01:17:50,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:17:50,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829014758] [2022-02-09 01:17:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:17:50,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:17:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:17:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:50,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:17:50,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829014758] [2022-02-09 01:17:50,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829014758] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:17:50,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467137705] [2022-02-09 01:17:50,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:17:50,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:17:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:17:50,814 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:17:50,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-09 01:17:50,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-09 01:17:50,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:17:50,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:17:50,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:17:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:51,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:17:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:17:52,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467137705] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:17:52,167 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:17:52,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2022-02-09 01:17:52,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809189615] [2022-02-09 01:17:52,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:17:52,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:17:52,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:17:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:17:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:17:52,168 INFO L87 Difference]: Start difference. First operand 84626 states and 257095 transitions. Second operand has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:17:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:17:58,172 INFO L93 Difference]: Finished difference Result 178213 states and 538935 transitions. [2022-02-09 01:17:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-02-09 01:17:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 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 79 [2022-02-09 01:17:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:17:59,176 INFO L225 Difference]: With dead ends: 178213 [2022-02-09 01:17:59,176 INFO L226 Difference]: Without dead ends: 178153 [2022-02-09 01:17:59,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13795 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5031, Invalid=30501, Unknown=0, NotChecked=0, Total=35532 [2022-02-09 01:17:59,178 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1444 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:17:59,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 3702 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:17:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178153 states. [2022-02-09 01:18:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178153 to 109958. [2022-02-09 01:18:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109958 states, 109957 states have (on average 3.0657256927708105) internal successors, (337098), 109957 states have internal predecessors, (337098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109958 states to 109958 states and 337098 transitions. [2022-02-09 01:18:03,453 INFO L78 Accepts]: Start accepts. Automaton has 109958 states and 337098 transitions. Word has length 79 [2022-02-09 01:18:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:03,453 INFO L470 AbstractCegarLoop]: Abstraction has 109958 states and 337098 transitions. [2022-02-09 01:18:03,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 109958 states and 337098 transitions. [2022-02-09 01:18:03,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:18:03,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:03,697 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:03,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:03,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:03,899 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1136477801, now seen corresponding path program 85 times [2022-02-09 01:18:03,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:03,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609737590] [2022-02-09 01:18:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:03,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:04,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:04,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609737590] [2022-02-09 01:18:04,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609737590] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:04,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874574919] [2022-02-09 01:18:04,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:18:04,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:04,056 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:04,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-09 01:18:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:04,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:18:04,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:04,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:05,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874574919] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:05,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:05,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2022-02-09 01:18:05,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920172015] [2022-02-09 01:18:05,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:05,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:18:05,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:18:05,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:18:05,331 INFO L87 Difference]: Start difference. First operand 109958 states and 337098 transitions. Second operand has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:09,918 INFO L93 Difference]: Finished difference Result 169821 states and 514530 transitions. [2022-02-09 01:18:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-02-09 01:18:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:18:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:10,573 INFO L225 Difference]: With dead ends: 169821 [2022-02-09 01:18:10,574 INFO L226 Difference]: Without dead ends: 169677 [2022-02-09 01:18:10,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6874 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2892, Invalid=17130, Unknown=0, NotChecked=0, Total=20022 [2022-02-09 01:18:10,575 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1304 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:10,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 3495 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:18:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169677 states. [2022-02-09 01:18:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169677 to 118518. [2022-02-09 01:18:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118518 states, 118517 states have (on average 3.0580423061670476) internal successors, (362430), 118517 states have internal predecessors, (362430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118518 states to 118518 states and 362430 transitions. [2022-02-09 01:18:14,791 INFO L78 Accepts]: Start accepts. Automaton has 118518 states and 362430 transitions. Word has length 79 [2022-02-09 01:18:14,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:14,791 INFO L470 AbstractCegarLoop]: Abstraction has 118518 states and 362430 transitions. [2022-02-09 01:18:14,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 118518 states and 362430 transitions. [2022-02-09 01:18:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:18:15,512 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:15,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:15,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-09 01:18:15,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:15,712 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1652623033, now seen corresponding path program 86 times [2022-02-09 01:18:15,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:15,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088024913] [2022-02-09 01:18:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:15,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:15,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:15,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088024913] [2022-02-09 01:18:15,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088024913] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:15,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833035113] [2022-02-09 01:18:15,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:18:15,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:15,835 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:15,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-09 01:18:15,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:18:15,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:15,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:18:15,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:16,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:16,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833035113] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:16,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:16,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-02-09 01:18:16,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767204616] [2022-02-09 01:18:16,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:16,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:18:16,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:16,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:18:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:18:16,810 INFO L87 Difference]: Start difference. First operand 118518 states and 362430 transitions. Second operand has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:21,081 INFO L93 Difference]: Finished difference Result 156117 states and 475053 transitions. [2022-02-09 01:18:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-09 01:18:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:18:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:21,840 INFO L225 Difference]: With dead ends: 156117 [2022-02-09 01:18:21,840 INFO L226 Difference]: Without dead ends: 155997 [2022-02-09 01:18:21,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5320 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2283, Invalid=13719, Unknown=0, NotChecked=0, Total=16002 [2022-02-09 01:18:21,841 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1135 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:21,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 4343 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:18:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155997 states. [2022-02-09 01:18:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155997 to 121754. [2022-02-09 01:18:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121754 states, 121753 states have (on average 3.060006734946983) internal successors, (372565), 121753 states have internal predecessors, (372565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121754 states to 121754 states and 372565 transitions. [2022-02-09 01:18:25,820 INFO L78 Accepts]: Start accepts. Automaton has 121754 states and 372565 transitions. Word has length 79 [2022-02-09 01:18:25,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:25,820 INFO L470 AbstractCegarLoop]: Abstraction has 121754 states and 372565 transitions. [2022-02-09 01:18:25,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 121754 states and 372565 transitions. [2022-02-09 01:18:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:18:26,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:26,046 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:26,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:26,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-09 01:18:26,247 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:26,247 INFO L85 PathProgramCache]: Analyzing trace with hash 549056321, now seen corresponding path program 87 times [2022-02-09 01:18:26,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:26,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805546997] [2022-02-09 01:18:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:26,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:26,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:26,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805546997] [2022-02-09 01:18:26,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805546997] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:26,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734702825] [2022-02-09 01:18:26,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:18:26,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:26,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:26,367 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:26,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-09 01:18:26,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-09 01:18:26,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:26,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-09 01:18:26,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:26,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:27,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734702825] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:27,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:27,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-09 01:18:27,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663516542] [2022-02-09 01:18:27,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:27,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-09 01:18:27,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-09 01:18:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2022-02-09 01:18:27,743 INFO L87 Difference]: Start difference. First operand 121754 states and 372565 transitions. Second operand has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:35,010 INFO L93 Difference]: Finished difference Result 187807 states and 568677 transitions. [2022-02-09 01:18:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-02-09 01:18:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:18:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:35,725 INFO L225 Difference]: With dead ends: 187807 [2022-02-09 01:18:35,725 INFO L226 Difference]: Without dead ends: 187762 [2022-02-09 01:18:35,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23293 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8337, Invalid=47595, Unknown=0, NotChecked=0, Total=55932 [2022-02-09 01:18:35,727 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1706 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:35,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 3540 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:18:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187762 states. [2022-02-09 01:18:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187762 to 129722. [2022-02-09 01:18:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129722 states, 129721 states have (on average 3.0576776312239344) internal successors, (396645), 129721 states have internal predecessors, (396645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129722 states to 129722 states and 396645 transitions. [2022-02-09 01:18:40,461 INFO L78 Accepts]: Start accepts. Automaton has 129722 states and 396645 transitions. Word has length 79 [2022-02-09 01:18:40,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:40,462 INFO L470 AbstractCegarLoop]: Abstraction has 129722 states and 396645 transitions. [2022-02-09 01:18:40,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:40,462 INFO L276 IsEmpty]: Start isEmpty. Operand 129722 states and 396645 transitions. [2022-02-09 01:18:40,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:18:40,740 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:40,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:40,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:40,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:40,943 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -989827493, now seen corresponding path program 88 times [2022-02-09 01:18:40,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:40,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322169586] [2022-02-09 01:18:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:40,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:41,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:41,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322169586] [2022-02-09 01:18:41,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322169586] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:41,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714103784] [2022-02-09 01:18:41,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:18:41,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:41,104 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:41,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-09 01:18:41,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:18:41,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:41,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:18:41,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:41,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:18:42,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714103784] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:42,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:42,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 34 [2022-02-09 01:18:42,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874321600] [2022-02-09 01:18:42,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:42,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:18:42,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:18:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:18:42,429 INFO L87 Difference]: Start difference. First operand 129722 states and 396645 transitions. Second operand has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:18:48,511 INFO L93 Difference]: Finished difference Result 194091 states and 592313 transitions. [2022-02-09 01:18:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-02-09 01:18:48,511 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:18:48,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:18:49,613 INFO L225 Difference]: With dead ends: 194091 [2022-02-09 01:18:49,613 INFO L226 Difference]: Without dead ends: 194019 [2022-02-09 01:18:49,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15896 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5887, Invalid=34313, Unknown=0, NotChecked=0, Total=40200 [2022-02-09 01:18:49,615 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1471 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:18:49,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 3874 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-09 01:18:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194019 states. [2022-02-09 01:18:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194019 to 128546. [2022-02-09 01:18:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128546 states, 128545 states have (on average 3.057567388852153) internal successors, (393035), 128545 states have internal predecessors, (393035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128546 states to 128546 states and 393035 transitions. [2022-02-09 01:18:54,648 INFO L78 Accepts]: Start accepts. Automaton has 128546 states and 393035 transitions. Word has length 79 [2022-02-09 01:18:54,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:18:54,649 INFO L470 AbstractCegarLoop]: Abstraction has 128546 states and 393035 transitions. [2022-02-09 01:18:54,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:18:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 128546 states and 393035 transitions. [2022-02-09 01:18:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:18:55,191 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:18:55,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:18:55,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-09 01:18:55,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:55,412 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:18:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:18:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1799273341, now seen corresponding path program 89 times [2022-02-09 01:18:55,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:18:55,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974305741] [2022-02-09 01:18:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:18:55,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:18:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:18:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:55,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:18:55,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974305741] [2022-02-09 01:18:55,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974305741] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:18:55,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985206117] [2022-02-09 01:18:55,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:18:55,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:18:55,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:18:55,634 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:18:55,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-09 01:18:55,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-09 01:18:55,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:18:55,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-09 01:18:55,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:18:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:56,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:18:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:18:56,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985206117] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:18:56,860 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:18:56,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-09 01:18:56,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509272097] [2022-02-09 01:18:56,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:18:56,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-09 01:18:56,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:18:56,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-09 01:18:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-02-09 01:18:56,861 INFO L87 Difference]: Start difference. First operand 128546 states and 393035 transitions. Second operand has 37 states, 37 states have (on average 3.972972972972973) internal successors, (147), 37 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:05,367 INFO L93 Difference]: Finished difference Result 215746 states and 653346 transitions. [2022-02-09 01:19:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2022-02-09 01:19:05,368 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.972972972972973) internal successors, (147), 37 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:19:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:06,664 INFO L225 Difference]: With dead ends: 215746 [2022-02-09 01:19:06,664 INFO L226 Difference]: Without dead ends: 215626 [2022-02-09 01:19:06,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25913 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=8688, Invalid=53562, Unknown=0, NotChecked=0, Total=62250 [2022-02-09 01:19:06,666 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1781 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:06,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 3311 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 01:19:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215626 states. [2022-02-09 01:19:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215626 to 130014. [2022-02-09 01:19:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130014 states, 130013 states have (on average 3.057724996731096) internal successors, (397544), 130013 states have internal predecessors, (397544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130014 states to 130014 states and 397544 transitions. [2022-02-09 01:19:11,772 INFO L78 Accepts]: Start accepts. Automaton has 130014 states and 397544 transitions. Word has length 79 [2022-02-09 01:19:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:11,773 INFO L470 AbstractCegarLoop]: Abstraction has 130014 states and 397544 transitions. [2022-02-09 01:19:11,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.972972972972973) internal successors, (147), 37 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 130014 states and 397544 transitions. [2022-02-09 01:19:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:19:12,031 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:12,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:12,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:12,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:12,232 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash -652038257, now seen corresponding path program 90 times [2022-02-09 01:19:12,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:12,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011577774] [2022-02-09 01:19:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:12,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:12,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:12,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011577774] [2022-02-09 01:19:12,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011577774] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:12,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245473523] [2022-02-09 01:19:12,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:19:12,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:12,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:12,353 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:12,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-09 01:19:12,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-09 01:19:12,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:19:12,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-09 01:19:12,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:13,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:13,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245473523] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:13,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:13,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 34 [2022-02-09 01:19:13,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107088171] [2022-02-09 01:19:13,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:13,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:19:13,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:19:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:19:13,729 INFO L87 Difference]: Start difference. First operand 130014 states and 397544 transitions. Second operand has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:16,828 INFO L93 Difference]: Finished difference Result 138821 states and 422611 transitions. [2022-02-09 01:19:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-09 01:19:16,828 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:19:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:17,615 INFO L225 Difference]: With dead ends: 138821 [2022-02-09 01:19:17,615 INFO L226 Difference]: Without dead ends: 138725 [2022-02-09 01:19:17,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4368 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1890, Invalid=10766, Unknown=0, NotChecked=0, Total=12656 [2022-02-09 01:19:17,616 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1053 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:17,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 2889 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 01:19:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138725 states. [2022-02-09 01:19:20,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138725 to 130630. [2022-02-09 01:19:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130630 states, 130629 states have (on average 3.0575599598863956) internal successors, (399406), 130629 states have internal predecessors, (399406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130630 states to 130630 states and 399406 transitions. [2022-02-09 01:19:21,735 INFO L78 Accepts]: Start accepts. Automaton has 130630 states and 399406 transitions. Word has length 79 [2022-02-09 01:19:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:21,735 INFO L470 AbstractCegarLoop]: Abstraction has 130630 states and 399406 transitions. [2022-02-09 01:19:21,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 130630 states and 399406 transitions. [2022-02-09 01:19:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:19:21,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:21,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:22,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:22,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:22,189 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash 679914949, now seen corresponding path program 91 times [2022-02-09 01:19:22,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:22,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612055283] [2022-02-09 01:19:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:22,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:22,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:22,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612055283] [2022-02-09 01:19:22,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612055283] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:22,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131120894] [2022-02-09 01:19:22,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:19:22,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:22,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:22,298 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:22,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-09 01:19:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:22,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:19:22,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:22,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:23,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131120894] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:23,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:23,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-02-09 01:19:23,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931085968] [2022-02-09 01:19:23,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:23,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 01:19:23,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 01:19:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-02-09 01:19:23,535 INFO L87 Difference]: Start difference. First operand 130630 states and 399406 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:29,314 INFO L93 Difference]: Finished difference Result 201205 states and 603545 transitions. [2022-02-09 01:19:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-09 01:19:29,314 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-09 01:19:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:30,473 INFO L225 Difference]: With dead ends: 201205 [2022-02-09 01:19:30,473 INFO L226 Difference]: Without dead ends: 201010 [2022-02-09 01:19:30,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10186 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3491, Invalid=23241, Unknown=0, NotChecked=0, Total=26732 [2022-02-09 01:19:30,474 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 767 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:30,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 4388 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 01:19:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201010 states. [2022-02-09 01:19:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201010 to 156422. [2022-02-09 01:19:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156422 states, 156421 states have (on average 3.0178684447740394) internal successors, (472058), 156421 states have internal predecessors, (472058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156422 states to 156422 states and 472058 transitions. [2022-02-09 01:19:35,592 INFO L78 Accepts]: Start accepts. Automaton has 156422 states and 472058 transitions. Word has length 79 [2022-02-09 01:19:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:35,593 INFO L470 AbstractCegarLoop]: Abstraction has 156422 states and 472058 transitions. [2022-02-09 01:19:35,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 156422 states and 472058 transitions. [2022-02-09 01:19:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-09 01:19:36,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:36,362 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:36,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-09 01:19:36,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:36,562 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash 300982483, now seen corresponding path program 92 times [2022-02-09 01:19:36,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:36,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572517158] [2022-02-09 01:19:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:36,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:36,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:36,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572517158] [2022-02-09 01:19:36,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572517158] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:36,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208252550] [2022-02-09 01:19:36,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:19:36,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:36,694 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:36,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-09 01:19:36,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:19:36,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:19:36,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 01:19:36,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:19:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:37,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:19:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:37,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208252550] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:19:37,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:19:37,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-02-09 01:19:37,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285525082] [2022-02-09 01:19:37,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:19:37,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-09 01:19:37,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-09 01:19:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-02-09 01:19:37,531 INFO L87 Difference]: Start difference. First operand 156422 states and 472058 transitions. Second operand has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:43,725 INFO L93 Difference]: Finished difference Result 218569 states and 656212 transitions. [2022-02-09 01:19:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-02-09 01:19:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 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 79 [2022-02-09 01:19:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:44,565 INFO L225 Difference]: With dead ends: 218569 [2022-02-09 01:19:44,565 INFO L226 Difference]: Without dead ends: 218269 [2022-02-09 01:19:44,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10283 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4360, Invalid=24032, Unknown=0, NotChecked=0, Total=28392 [2022-02-09 01:19:44,566 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1222 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:44,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 3956 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 01:19:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218269 states. [2022-02-09 01:19:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218269 to 187494. [2022-02-09 01:19:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187494 states, 187493 states have (on average 3.025915634183676) internal successors, (567338), 187493 states have internal predecessors, (567338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187494 states to 187494 states and 567338 transitions. [2022-02-09 01:19:51,340 INFO L78 Accepts]: Start accepts. Automaton has 187494 states and 567338 transitions. Word has length 79 [2022-02-09 01:19:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:51,341 INFO L470 AbstractCegarLoop]: Abstraction has 187494 states and 567338 transitions. [2022-02-09 01:19:51,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 187494 states and 567338 transitions.