/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-820ea7a [2022-02-18 14:51:00,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 14:51:00,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 14:51:00,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-18 14:51:00,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-18 14:51:00,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-18 14:51:00,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-18 14:51:00,929 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 [2022-02-18 14:51:00,959 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 14:51:00,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 14:51:00,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 14:51:00,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 14:51:00,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 14:51:00,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 14:51:00,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 14:51:00,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 14:51:00,961 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 14:51:00,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 14:51:00,962 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 14:51:00,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 14:51:00,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 14:51:00,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 14:51:00,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 14:51:00,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 14:51:00,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 14:51:00,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 14:51:00,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:51:00,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 14:51:00,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 14:51:00,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 14:51:00,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 14:51:00,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 14:51:00,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 14:51:00,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 14:51:00,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 14:51:01,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 14:51:01,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 14:51:01,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 14:51:01,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-18 14:51:01,207 INFO L275 PluginConnector]: CDTParser initialized [2022-02-18 14:51:01,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-18 14:51:01,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d3b2428/57246b6eed314d25ab2071c1c5d5121f/FLAG12bb41d3b [2022-02-18 14:51:01,625 INFO L306 CDTParser]: Found 1 translation units. [2022-02-18 14:51:01,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-18 14:51:01,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d3b2428/57246b6eed314d25ab2071c1c5d5121f/FLAG12bb41d3b [2022-02-18 14:51:01,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d3b2428/57246b6eed314d25ab2071c1c5d5121f [2022-02-18 14:51:01,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 14:51:01,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-18 14:51:01,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-18 14:51:01,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-18 14:51:01,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-18 14:51:01,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b3118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01, skipping insertion in model container [2022-02-18 14:51:01,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-18 14:51:01,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-18 14:51:01,830 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] [2022-02-18 14:51:01,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:51:01,838 INFO L203 MainTranslator]: Completed pre-run [2022-02-18 14:51:01,851 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] [2022-02-18 14:51:01,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:51:01,863 INFO L208 MainTranslator]: Completed translation [2022-02-18 14:51:01,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01 WrapperNode [2022-02-18 14:51:01,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-18 14:51:01,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 14:51:01,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 14:51:01,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 14:51:01,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,888 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-02-18 14:51:01,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 14:51:01,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 14:51:01,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 14:51:01,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 14:51:01,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 14:51:01,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 14:51:01,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 14:51:01,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 14:51:01,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (1/1) ... [2022-02-18 14:51:01,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:51:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:01,941 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) [2022-02-18 14:51:01,953 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 [2022-02-18 14:51:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-18 14:51:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-18 14:51:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-18 14:51:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-18 14:51:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-18 14:51:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-18 14:51:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-18 14:51:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-18 14:51:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-18 14:51:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-18 14:51:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 14:51:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 14:51:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-18 14:51:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-18 14:51:01,988 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-18 14:51:02,072 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 14:51:02,073 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 14:51:02,232 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 14:51:02,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 14:51:02,275 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-18 14:51:02,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:51:02 BoogieIcfgContainer [2022-02-18 14:51:02,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 14:51:02,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 14:51:02,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 14:51:02,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 14:51:02,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:51:01" (1/3) ... [2022-02-18 14:51:02,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af1a138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:51:02, skipping insertion in model container [2022-02-18 14:51:02,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:51:01" (2/3) ... [2022-02-18 14:51:02,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af1a138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:51:02, skipping insertion in model container [2022-02-18 14:51:02,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:51:02" (3/3) ... [2022-02-18 14:51:02,290 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-02-18 14:51:02,295 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 14:51:02,295 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 14:51:02,295 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 14:51:02,296 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 14:51:02,343 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,343 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,344 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,344 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,345 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,351 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,351 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,352 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,352 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,353 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,354 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,359 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,359 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,360 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,360 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,360 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,361 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,365 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,365 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,367 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,367 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,375 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,379 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:51:02,390 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-18 14:51:02,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 14:51:02,453 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-18 14:51:02,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-18 14:51:02,467 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 82 transitions, 180 flow [2022-02-18 14:51:02,530 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) [2022-02-18 14:51:02,533 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) [2022-02-18 14:51:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-18 14:51:02,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:02,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:02,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1376248037, now seen corresponding path program 1 times [2022-02-18 14:51:02,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:02,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005399157] [2022-02-18 14:51:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:02,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:02,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:02,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005399157] [2022-02-18 14:51:02,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005399157] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:51:02,747 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:51:02,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-18 14:51:02,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302874394] [2022-02-18 14:51:02,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:51:02,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-18 14:51:02,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-18 14:51:02,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-18 14:51:02,785 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) [2022-02-18 14:51:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:02,840 INFO L93 Difference]: Finished difference Result 328 states and 778 transitions. [2022-02-18 14:51:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-18 14:51:02,843 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 [2022-02-18 14:51:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:02,864 INFO L225 Difference]: With dead ends: 328 [2022-02-18 14:51:02,871 INFO L226 Difference]: Without dead ends: 326 [2022-02-18 14:51:02,873 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 [2022-02-18 14:51:02,876 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 [2022-02-18 14:51:02,876 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] [2022-02-18 14:51:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-02-18 14:51:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-02-18 14:51:02,949 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) [2022-02-18 14:51:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 776 transitions. [2022-02-18 14:51:02,953 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 776 transitions. Word has length 58 [2022-02-18 14:51:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:02,953 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 776 transitions. [2022-02-18 14:51:02,953 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) [2022-02-18 14:51:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 776 transitions. [2022-02-18 14:51:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-18 14:51:02,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:02,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:02,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 14:51:02,960 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:02,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1501901863, now seen corresponding path program 1 times [2022-02-18 14:51:02,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:02,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96995232] [2022-02-18 14:51:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:03,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:03,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96995232] [2022-02-18 14:51:03,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96995232] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:51:03,156 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:51:03,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-18 14:51:03,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228062464] [2022-02-18 14:51:03,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:51:03,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-18 14:51:03,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:03,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-18 14:51:03,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-18 14:51:03,159 INFO L87 Difference]: Start difference. First operand 326 states and 776 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2022-02-18 14:51:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:03,237 INFO L93 Difference]: Finished difference Result 446 states and 1088 transitions. [2022-02-18 14:51:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-18 14:51:03,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 [2022-02-18 14:51:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:03,241 INFO L225 Difference]: With dead ends: 446 [2022-02-18 14:51:03,241 INFO L226 Difference]: Without dead ends: 446 [2022-02-18 14:51:03,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-18 14:51:03,243 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 68 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:03,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 165 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:51:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-02-18 14:51:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 356. [2022-02-18 14:51:03,254 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) [2022-02-18 14:51:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 854 transitions. [2022-02-18 14:51:03,256 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 854 transitions. Word has length 58 [2022-02-18 14:51:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:03,256 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 854 transitions. [2022-02-18 14:51:03,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2022-02-18 14:51:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 854 transitions. [2022-02-18 14:51:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-18 14:51:03,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:03,259 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] [2022-02-18 14:51:03,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-18 14:51:03,259 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1550020423, now seen corresponding path program 1 times [2022-02-18 14:51:03,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:03,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575176080] [2022-02-18 14:51:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:03,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:03,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575176080] [2022-02-18 14:51:03,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575176080] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:03,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225859690] [2022-02-18 14:51:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:03,379 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) [2022-02-18 14:51:03,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-18 14:51:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:03,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-18 14:51:03,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:03,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:03,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225859690] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:03,864 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:03,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-02-18 14:51:03,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268351136] [2022-02-18 14:51:03,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:03,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-18 14:51:03,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:03,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-18 14:51:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-18 14:51:03,868 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) [2022-02-18 14:51:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:04,079 INFO L93 Difference]: Finished difference Result 540 states and 1342 transitions. [2022-02-18 14:51:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-18 14:51:04,079 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 [2022-02-18 14:51:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:04,087 INFO L225 Difference]: With dead ends: 540 [2022-02-18 14:51:04,087 INFO L226 Difference]: Without dead ends: 540 [2022-02-18 14:51:04,088 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 [2022-02-18 14:51:04,092 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 121 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:04,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 540 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:51:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-02-18 14:51:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 391. [2022-02-18 14:51:04,111 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) [2022-02-18 14:51:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 948 transitions. [2022-02-18 14:51:04,112 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 948 transitions. Word has length 63 [2022-02-18 14:51:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:04,113 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 948 transitions. [2022-02-18 14:51:04,113 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) [2022-02-18 14:51:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 948 transitions. [2022-02-18 14:51:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-18 14:51:04,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:04,115 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] [2022-02-18 14:51:04,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:04,323 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 [2022-02-18 14:51:04,324 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2085302797, now seen corresponding path program 2 times [2022-02-18 14:51:04,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:04,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204387849] [2022-02-18 14:51:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:04,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:04,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204387849] [2022-02-18 14:51:04,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204387849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:04,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143463301] [2022-02-18 14:51:04,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:04,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:04,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:04,438 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) [2022-02-18 14:51:04,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-18 14:51:04,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-18 14:51:04,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:04,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-18 14:51:04,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:51:04,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-18 14:51:04,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143463301] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:51:04,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-18 14:51:04,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-02-18 14:51:04,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159494696] [2022-02-18 14:51:04,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:51:04,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-18 14:51:04,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:04,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-18 14:51:04,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-18 14:51:04,854 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) [2022-02-18 14:51:04,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:04,975 INFO L93 Difference]: Finished difference Result 477 states and 1180 transitions. [2022-02-18 14:51:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-18 14:51:04,976 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 [2022-02-18 14:51:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:04,981 INFO L225 Difference]: With dead ends: 477 [2022-02-18 14:51:04,981 INFO L226 Difference]: Without dead ends: 477 [2022-02-18 14:51:04,981 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 [2022-02-18 14:51:04,987 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 [2022-02-18 14:51:04,988 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] [2022-02-18 14:51:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-02-18 14:51:04,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 399. [2022-02-18 14:51:05,000 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) [2022-02-18 14:51:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 970 transitions. [2022-02-18 14:51:05,002 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 970 transitions. Word has length 63 [2022-02-18 14:51:05,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:05,004 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 970 transitions. [2022-02-18 14:51:05,004 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) [2022-02-18 14:51:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 970 transitions. [2022-02-18 14:51:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-18 14:51:05,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:05,009 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] [2022-02-18 14:51:05,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:05,219 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 [2022-02-18 14:51:05,219 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash -60630437, now seen corresponding path program 1 times [2022-02-18 14:51:05,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:05,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797975331] [2022-02-18 14:51:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:05,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:05,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797975331] [2022-02-18 14:51:05,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797975331] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:05,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892491554] [2022-02-18 14:51:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:05,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:05,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:05,348 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) [2022-02-18 14:51:05,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-18 14:51:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-18 14:51:05,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:05,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:06,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892491554] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:06,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:06,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2022-02-18 14:51:06,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118042987] [2022-02-18 14:51:06,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:06,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-18 14:51:06,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-18 14:51:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-18 14:51:06,073 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) [2022-02-18 14:51:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:06,130 INFO L93 Difference]: Finished difference Result 896 states and 2243 transitions. [2022-02-18 14:51:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-18 14:51:06,130 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 [2022-02-18 14:51:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:06,134 INFO L225 Difference]: With dead ends: 896 [2022-02-18 14:51:06,134 INFO L226 Difference]: Without dead ends: 752 [2022-02-18 14:51:06,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-18 14:51:06,135 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 [2022-02-18 14:51:06,136 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] [2022-02-18 14:51:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-02-18 14:51:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 606. [2022-02-18 14:51:06,152 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) [2022-02-18 14:51:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1534 transitions. [2022-02-18 14:51:06,155 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1534 transitions. Word has length 65 [2022-02-18 14:51:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:06,155 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1534 transitions. [2022-02-18 14:51:06,155 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) [2022-02-18 14:51:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1534 transitions. [2022-02-18 14:51:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-18 14:51:06,157 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:06,157 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] [2022-02-18 14:51:06,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:06,377 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 [2022-02-18 14:51:06,377 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1922671995, now seen corresponding path program 2 times [2022-02-18 14:51:06,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:06,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589774041] [2022-02-18 14:51:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:06,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:06,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589774041] [2022-02-18 14:51:06,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589774041] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:06,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548547295] [2022-02-18 14:51:06,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:06,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:06,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:06,485 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) [2022-02-18 14:51:06,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-18 14:51:06,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:06,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:06,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-18 14:51:06,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:06,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:06,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548547295] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:06,894 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:06,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2022-02-18 14:51:06,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090020117] [2022-02-18 14:51:06,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:06,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-18 14:51:06,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-18 14:51:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-18 14:51:06,896 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) [2022-02-18 14:51:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:07,008 INFO L93 Difference]: Finished difference Result 755 states and 1922 transitions. [2022-02-18 14:51:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-18 14:51:07,009 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 [2022-02-18 14:51:07,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:07,013 INFO L225 Difference]: With dead ends: 755 [2022-02-18 14:51:07,013 INFO L226 Difference]: Without dead ends: 740 [2022-02-18 14:51:07,013 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 [2022-02-18 14:51:07,014 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 65 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:07,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 311 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:51:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-02-18 14:51:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 598. [2022-02-18 14:51:07,028 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) [2022-02-18 14:51:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1512 transitions. [2022-02-18 14:51:07,030 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1512 transitions. Word has length 65 [2022-02-18 14:51:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:07,030 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1512 transitions. [2022-02-18 14:51:07,031 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) [2022-02-18 14:51:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1512 transitions. [2022-02-18 14:51:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:07,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:07,032 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] [2022-02-18 14:51:07,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:07,251 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 [2022-02-18 14:51:07,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1971137093, now seen corresponding path program 3 times [2022-02-18 14:51:07,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:07,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283262239] [2022-02-18 14:51:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:07,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:07,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:07,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283262239] [2022-02-18 14:51:07,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283262239] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:07,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005183859] [2022-02-18 14:51:07,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:07,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:07,395 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) [2022-02-18 14:51:07,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-18 14:51:07,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:51:07,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:07,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:07,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:07,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:07,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005183859] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:07,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:07,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2022-02-18 14:51:07,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143247700] [2022-02-18 14:51:07,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:07,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-18 14:51:07,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-18 14:51:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-02-18 14:51:07,899 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) [2022-02-18 14:51:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:08,960 INFO L93 Difference]: Finished difference Result 1484 states and 3857 transitions. [2022-02-18 14:51:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-18 14:51:08,960 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 [2022-02-18 14:51:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:08,967 INFO L225 Difference]: With dead ends: 1484 [2022-02-18 14:51:08,968 INFO L226 Difference]: Without dead ends: 1469 [2022-02-18 14:51:08,969 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 [2022-02-18 14:51:08,970 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 522 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:08,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1616 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-02-18 14:51:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 680. [2022-02-18 14:51:08,990 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) [2022-02-18 14:51:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1733 transitions. [2022-02-18 14:51:08,992 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1733 transitions. Word has length 70 [2022-02-18 14:51:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:08,992 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 1733 transitions. [2022-02-18 14:51:08,992 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) [2022-02-18 14:51:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1733 transitions. [2022-02-18 14:51:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:08,994 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:08,994 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] [2022-02-18 14:51:09,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-18 14:51:09,217 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 [2022-02-18 14:51:09,217 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:09,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash 481657637, now seen corresponding path program 4 times [2022-02-18 14:51:09,218 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:09,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370326632] [2022-02-18 14:51:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:09,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:09,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:09,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370326632] [2022-02-18 14:51:09,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370326632] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:09,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79931713] [2022-02-18 14:51:09,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:09,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:09,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:09,356 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) [2022-02-18 14:51:09,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-18 14:51:09,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:09,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:09,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-18 14:51:09,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:09,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:10,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79931713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:10,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:10,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2022-02-18 14:51:10,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034175251] [2022-02-18 14:51:10,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:10,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-18 14:51:10,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-18 14:51:10,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-02-18 14:51:10,026 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) [2022-02-18 14:51:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:10,818 INFO L93 Difference]: Finished difference Result 1453 states and 3763 transitions. [2022-02-18 14:51:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-18 14:51:10,819 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 [2022-02-18 14:51:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:10,825 INFO L225 Difference]: With dead ends: 1453 [2022-02-18 14:51:10,825 INFO L226 Difference]: Without dead ends: 1438 [2022-02-18 14:51:10,827 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 [2022-02-18 14:51:10,827 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 459 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:10,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1592 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:51:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-02-18 14:51:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 696. [2022-02-18 14:51:10,846 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) [2022-02-18 14:51:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1777 transitions. [2022-02-18 14:51:10,849 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1777 transitions. Word has length 70 [2022-02-18 14:51:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:10,849 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1777 transitions. [2022-02-18 14:51:10,849 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) [2022-02-18 14:51:10,849 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1777 transitions. [2022-02-18 14:51:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:10,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:10,851 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] [2022-02-18 14:51:10,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:11,073 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 [2022-02-18 14:51:11,074 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:11,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:11,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1740204831, now seen corresponding path program 5 times [2022-02-18 14:51:11,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:11,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786059994] [2022-02-18 14:51:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:11,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:11,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786059994] [2022-02-18 14:51:11,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786059994] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:11,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620217756] [2022-02-18 14:51:11,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:11,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:11,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:11,191 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) [2022-02-18 14:51:11,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-18 14:51:11,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:51:11,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:11,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:11,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:11,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:11,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620217756] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:11,827 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:11,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-18 14:51:11,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131765272] [2022-02-18 14:51:11,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:11,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:11,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:11,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:11,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:11,829 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) [2022-02-18 14:51:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:13,070 INFO L93 Difference]: Finished difference Result 2222 states and 5753 transitions. [2022-02-18 14:51:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-18 14:51:13,071 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 [2022-02-18 14:51:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:13,082 INFO L225 Difference]: With dead ends: 2222 [2022-02-18 14:51:13,082 INFO L226 Difference]: Without dead ends: 2207 [2022-02-18 14:51:13,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1453, Invalid=5519, Unknown=0, NotChecked=0, Total=6972 [2022-02-18 14:51:13,086 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 935 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:13,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1266 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:51:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-02-18 14:51:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 736. [2022-02-18 14:51:13,130 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) [2022-02-18 14:51:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1895 transitions. [2022-02-18 14:51:13,132 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1895 transitions. Word has length 70 [2022-02-18 14:51:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:13,132 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1895 transitions. [2022-02-18 14:51:13,132 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) [2022-02-18 14:51:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1895 transitions. [2022-02-18 14:51:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:13,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:13,135 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] [2022-02-18 14:51:13,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:13,355 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 [2022-02-18 14:51:13,356 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1015878651, now seen corresponding path program 6 times [2022-02-18 14:51:13,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:13,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701875637] [2022-02-18 14:51:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:13,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:13,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701875637] [2022-02-18 14:51:13,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701875637] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:13,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225159108] [2022-02-18 14:51:13,455 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:13,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:13,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:13,457 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) [2022-02-18 14:51:13,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-18 14:51:13,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:51:13,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:13,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:13,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:13,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:14,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225159108] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:14,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:14,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-18 14:51:14,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288715291] [2022-02-18 14:51:14,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:14,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:14,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:14,029 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) [2022-02-18 14:51:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:14,735 INFO L93 Difference]: Finished difference Result 1526 states and 3939 transitions. [2022-02-18 14:51:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-18 14:51:14,735 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 [2022-02-18 14:51:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:14,742 INFO L225 Difference]: With dead ends: 1526 [2022-02-18 14:51:14,742 INFO L226 Difference]: Without dead ends: 1502 [2022-02-18 14:51:14,743 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 [2022-02-18 14:51:14,743 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 718 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:14,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1361 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-02-18 14:51:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 736. [2022-02-18 14:51:14,762 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) [2022-02-18 14:51:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1887 transitions. [2022-02-18 14:51:14,764 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1887 transitions. Word has length 70 [2022-02-18 14:51:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:14,764 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1887 transitions. [2022-02-18 14:51:14,765 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) [2022-02-18 14:51:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1887 transitions. [2022-02-18 14:51:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:14,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:14,766 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] [2022-02-18 14:51:14,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:14,979 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 [2022-02-18 14:51:14,979 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash 221980705, now seen corresponding path program 7 times [2022-02-18 14:51:14,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:14,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10203684] [2022-02-18 14:51:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:14,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:15,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:15,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10203684] [2022-02-18 14:51:15,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10203684] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:15,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632919489] [2022-02-18 14:51:15,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:15,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:15,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:15,094 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) [2022-02-18 14:51:15,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-18 14:51:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:15,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:15,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:15,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:15,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632919489] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:15,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:15,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-18 14:51:15,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128555778] [2022-02-18 14:51:15,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:15,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-18 14:51:15,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:15,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-18 14:51:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-18 14:51:15,649 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) [2022-02-18 14:51:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:16,807 INFO L93 Difference]: Finished difference Result 2307 states and 5966 transitions. [2022-02-18 14:51:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-18 14:51:16,808 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 [2022-02-18 14:51:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:16,816 INFO L225 Difference]: With dead ends: 2307 [2022-02-18 14:51:16,817 INFO L226 Difference]: Without dead ends: 2277 [2022-02-18 14:51:16,818 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 [2022-02-18 14:51:16,819 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 592 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:16,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1495 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-02-18 14:51:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 900. [2022-02-18 14:51:16,846 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) [2022-02-18 14:51:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2374 transitions. [2022-02-18 14:51:16,848 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2374 transitions. Word has length 70 [2022-02-18 14:51:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:16,849 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2374 transitions. [2022-02-18 14:51:16,849 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) [2022-02-18 14:51:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2374 transitions. [2022-02-18 14:51:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:16,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:16,851 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] [2022-02-18 14:51:16,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:17,074 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 [2022-02-18 14:51:17,074 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1316903109, now seen corresponding path program 8 times [2022-02-18 14:51:17,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:17,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642462626] [2022-02-18 14:51:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:17,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:17,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:17,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642462626] [2022-02-18 14:51:17,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642462626] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:17,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235496640] [2022-02-18 14:51:17,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:17,170 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) [2022-02-18 14:51:17,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-18 14:51:17,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:17,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:17,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:17,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:17,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:17,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235496640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:17,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:17,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-18 14:51:17,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745095719] [2022-02-18 14:51:17,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:17,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-18 14:51:17,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-18 14:51:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-02-18 14:51:17,722 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) [2022-02-18 14:51:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:18,433 INFO L93 Difference]: Finished difference Result 2098 states and 5385 transitions. [2022-02-18 14:51:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-18 14:51:18,433 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 [2022-02-18 14:51:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:18,439 INFO L225 Difference]: With dead ends: 2098 [2022-02-18 14:51:18,439 INFO L226 Difference]: Without dead ends: 2050 [2022-02-18 14:51:18,440 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 [2022-02-18 14:51:18,440 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 619 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:18,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 1291 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-02-18 14:51:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 916. [2022-02-18 14:51:18,463 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) [2022-02-18 14:51:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2402 transitions. [2022-02-18 14:51:18,465 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2402 transitions. Word has length 70 [2022-02-18 14:51:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:18,465 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2402 transitions. [2022-02-18 14:51:18,466 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) [2022-02-18 14:51:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2402 transitions. [2022-02-18 14:51:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:18,468 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:18,468 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] [2022-02-18 14:51:18,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:18,691 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 [2022-02-18 14:51:18,691 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1472197725, now seen corresponding path program 9 times [2022-02-18 14:51:18,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:18,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109985258] [2022-02-18 14:51:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:18,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:18,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:18,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109985258] [2022-02-18 14:51:18,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109985258] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:18,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208964652] [2022-02-18 14:51:18,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:18,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:18,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:18,794 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) [2022-02-18 14:51:18,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-18 14:51:18,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:51:18,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:18,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:18,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:19,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:19,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208964652] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:19,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:19,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:19,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373611878] [2022-02-18 14:51:19,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:19,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:19,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:19,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:19,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:19,314 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) [2022-02-18 14:51:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:19,623 INFO L93 Difference]: Finished difference Result 1287 states and 3381 transitions. [2022-02-18 14:51:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-18 14:51:19,623 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 [2022-02-18 14:51:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:19,628 INFO L225 Difference]: With dead ends: 1287 [2022-02-18 14:51:19,628 INFO L226 Difference]: Without dead ends: 1251 [2022-02-18 14:51:19,629 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 [2022-02-18 14:51:19,632 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 379 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:19,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1300 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-02-18 14:51:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 928. [2022-02-18 14:51:19,661 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) [2022-02-18 14:51:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 2435 transitions. [2022-02-18 14:51:19,663 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 2435 transitions. Word has length 70 [2022-02-18 14:51:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:19,664 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 2435 transitions. [2022-02-18 14:51:19,664 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) [2022-02-18 14:51:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2435 transitions. [2022-02-18 14:51:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:19,672 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:19,672 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] [2022-02-18 14:51:19,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:19,883 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 [2022-02-18 14:51:19,883 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:19,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash -313771491, now seen corresponding path program 10 times [2022-02-18 14:51:19,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:19,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92079610] [2022-02-18 14:51:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:19,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:20,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:20,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92079610] [2022-02-18 14:51:20,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92079610] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:20,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369790228] [2022-02-18 14:51:20,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:20,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:20,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:20,007 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) [2022-02-18 14:51:20,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-18 14:51:20,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:20,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:20,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:20,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:20,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:20,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369790228] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:20,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:20,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:20,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436614983] [2022-02-18 14:51:20,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:20,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:20,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:20,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:20,518 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) [2022-02-18 14:51:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:20,993 INFO L93 Difference]: Finished difference Result 1677 states and 4444 transitions. [2022-02-18 14:51:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-18 14:51:20,994 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 [2022-02-18 14:51:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:21,001 INFO L225 Difference]: With dead ends: 1677 [2022-02-18 14:51:21,001 INFO L226 Difference]: Without dead ends: 1641 [2022-02-18 14:51:21,002 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 [2022-02-18 14:51:21,003 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 356 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:21,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1172 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-02-18 14:51:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 936. [2022-02-18 14:51:21,028 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) [2022-02-18 14:51:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 2457 transitions. [2022-02-18 14:51:21,030 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 2457 transitions. Word has length 70 [2022-02-18 14:51:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:21,031 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 2457 transitions. [2022-02-18 14:51:21,031 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) [2022-02-18 14:51:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 2457 transitions. [2022-02-18 14:51:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:21,033 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:21,033 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] [2022-02-18 14:51:21,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-18 14:51:21,247 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 [2022-02-18 14:51:21,247 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338203, now seen corresponding path program 11 times [2022-02-18 14:51:21,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:21,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568541506] [2022-02-18 14:51:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:21,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:21,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568541506] [2022-02-18 14:51:21,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568541506] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:21,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224318595] [2022-02-18 14:51:21,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:21,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:21,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:21,326 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) [2022-02-18 14:51:21,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-18 14:51:21,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:51:21,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:21,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:21,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:21,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224318595] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:21,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:21,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-18 14:51:21,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728235391] [2022-02-18 14:51:21,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:21,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-18 14:51:21,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-18 14:51:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-02-18 14:51:21,881 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) [2022-02-18 14:51:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:22,918 INFO L93 Difference]: Finished difference Result 3265 states and 8631 transitions. [2022-02-18 14:51:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-18 14:51:22,918 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 [2022-02-18 14:51:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:22,932 INFO L225 Difference]: With dead ends: 3265 [2022-02-18 14:51:22,933 INFO L226 Difference]: Without dead ends: 3235 [2022-02-18 14:51:22,936 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 [2022-02-18 14:51:22,937 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 613 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:22,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1463 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-02-18 14:51:22,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1344. [2022-02-18 14:51:22,982 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) [2022-02-18 14:51:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3695 transitions. [2022-02-18 14:51:22,986 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3695 transitions. Word has length 70 [2022-02-18 14:51:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:22,986 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 3695 transitions. [2022-02-18 14:51:22,986 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) [2022-02-18 14:51:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3695 transitions. [2022-02-18 14:51:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:22,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:22,990 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] [2022-02-18 14:51:23,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:23,203 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 [2022-02-18 14:51:23,203 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1338745279, now seen corresponding path program 12 times [2022-02-18 14:51:23,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:23,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314833532] [2022-02-18 14:51:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:23,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:23,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314833532] [2022-02-18 14:51:23,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314833532] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:23,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728016417] [2022-02-18 14:51:23,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:23,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:23,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:23,316 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) [2022-02-18 14:51:23,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-18 14:51:23,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:51:23,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:23,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:23,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:23,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:23,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728016417] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:23,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:23,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-18 14:51:23,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945600249] [2022-02-18 14:51:23,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:23,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-18 14:51:23,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-18 14:51:23,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-02-18 14:51:23,893 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) [2022-02-18 14:51:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:24,640 INFO L93 Difference]: Finished difference Result 3079 states and 8156 transitions. [2022-02-18 14:51:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-18 14:51:24,640 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 [2022-02-18 14:51:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:24,647 INFO L225 Difference]: With dead ends: 3079 [2022-02-18 14:51:24,647 INFO L226 Difference]: Without dead ends: 3031 [2022-02-18 14:51:24,648 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 [2022-02-18 14:51:24,649 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 782 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:24,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1283 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-02-18 14:51:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1340. [2022-02-18 14:51:24,684 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) [2022-02-18 14:51:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 3676 transitions. [2022-02-18 14:51:24,688 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 3676 transitions. Word has length 70 [2022-02-18 14:51:24,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:24,688 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 3676 transitions. [2022-02-18 14:51:24,688 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) [2022-02-18 14:51:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 3676 transitions. [2022-02-18 14:51:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:24,692 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:24,693 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] [2022-02-18 14:51:24,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:24,911 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 [2022-02-18 14:51:24,911 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash -167121183, now seen corresponding path program 13 times [2022-02-18 14:51:24,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:24,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45303503] [2022-02-18 14:51:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:24,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:24,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:24,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45303503] [2022-02-18 14:51:24,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45303503] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:24,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101092134] [2022-02-18 14:51:24,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:24,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:24,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:24,988 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) [2022-02-18 14:51:24,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-18 14:51:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:25,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:25,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:25,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:25,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101092134] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:25,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:25,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:25,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5897708] [2022-02-18 14:51:25,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:25,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:25,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:25,514 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) [2022-02-18 14:51:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:26,456 INFO L93 Difference]: Finished difference Result 3774 states and 10220 transitions. [2022-02-18 14:51:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-18 14:51:26,456 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 [2022-02-18 14:51:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:26,464 INFO L225 Difference]: With dead ends: 3774 [2022-02-18 14:51:26,464 INFO L226 Difference]: Without dead ends: 3738 [2022-02-18 14:51:26,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=906, Invalid=3786, Unknown=0, NotChecked=0, Total=4692 [2022-02-18 14:51:26,466 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 752 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:26,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1393 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:26,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2022-02-18 14:51:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2108. [2022-02-18 14:51:26,518 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) [2022-02-18 14:51:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5932 transitions. [2022-02-18 14:51:26,525 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5932 transitions. Word has length 70 [2022-02-18 14:51:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:26,525 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5932 transitions. [2022-02-18 14:51:26,525 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) [2022-02-18 14:51:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5932 transitions. [2022-02-18 14:51:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:26,530 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:26,530 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] [2022-02-18 14:51:26,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:26,751 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 [2022-02-18 14:51:26,752 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:26,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1676534515, now seen corresponding path program 14 times [2022-02-18 14:51:26,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:26,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797625801] [2022-02-18 14:51:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:26,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:26,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797625801] [2022-02-18 14:51:26,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797625801] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:26,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487931803] [2022-02-18 14:51:26,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:26,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:26,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:26,830 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) [2022-02-18 14:51:26,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-18 14:51:26,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:26,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:26,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:26,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:27,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:27,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487931803] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:27,402 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:27,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:27,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101385518] [2022-02-18 14:51:27,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:27,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:27,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:27,404 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) [2022-02-18 14:51:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:27,661 INFO L93 Difference]: Finished difference Result 2346 states and 6507 transitions. [2022-02-18 14:51:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-18 14:51:27,661 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 [2022-02-18 14:51:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:27,666 INFO L225 Difference]: With dead ends: 2346 [2022-02-18 14:51:27,667 INFO L226 Difference]: Without dead ends: 2298 [2022-02-18 14:51:27,667 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 [2022-02-18 14:51:27,668 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 319 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:27,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1069 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:51:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-02-18 14:51:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2108. [2022-02-18 14:51:27,714 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) [2022-02-18 14:51:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5928 transitions. [2022-02-18 14:51:27,720 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5928 transitions. Word has length 70 [2022-02-18 14:51:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:27,720 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5928 transitions. [2022-02-18 14:51:27,721 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) [2022-02-18 14:51:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5928 transitions. [2022-02-18 14:51:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:27,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:27,726 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] [2022-02-18 14:51:27,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:27,939 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 [2022-02-18 14:51:27,939 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash -570914211, now seen corresponding path program 15 times [2022-02-18 14:51:27,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:27,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564124558] [2022-02-18 14:51:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:28,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:28,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564124558] [2022-02-18 14:51:28,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564124558] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:28,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48390686] [2022-02-18 14:51:28,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:28,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:28,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:28,031 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) [2022-02-18 14:51:28,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-18 14:51:28,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:51:28,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:28,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:28,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:28,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48390686] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:28,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:28,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:28,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241522421] [2022-02-18 14:51:28,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:28,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:28,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:28,506 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) [2022-02-18 14:51:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:29,124 INFO L93 Difference]: Finished difference Result 3337 states and 9298 transitions. [2022-02-18 14:51:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-18 14:51:29,125 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 [2022-02-18 14:51:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:29,133 INFO L225 Difference]: With dead ends: 3337 [2022-02-18 14:51:29,133 INFO L226 Difference]: Without dead ends: 3253 [2022-02-18 14:51:29,134 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 [2022-02-18 14:51:29,135 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 337 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:29,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1471 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-02-18 14:51:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2316. [2022-02-18 14:51:29,187 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) [2022-02-18 14:51:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 6528 transitions. [2022-02-18 14:51:29,192 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 6528 transitions. Word has length 70 [2022-02-18 14:51:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:29,193 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 6528 transitions. [2022-02-18 14:51:29,193 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) [2022-02-18 14:51:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 6528 transitions. [2022-02-18 14:51:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:29,198 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:29,198 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] [2022-02-18 14:51:29,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:29,420 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 [2022-02-18 14:51:29,421 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash -424263903, now seen corresponding path program 16 times [2022-02-18 14:51:29,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:29,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581307861] [2022-02-18 14:51:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:29,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:29,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581307861] [2022-02-18 14:51:29,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581307861] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:29,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482836811] [2022-02-18 14:51:29,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:29,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:29,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:29,501 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) [2022-02-18 14:51:29,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-18 14:51:29,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:29,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:29,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:29,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:29,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:29,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482836811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:29,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:29,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:29,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971296865] [2022-02-18 14:51:29,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:29,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:29,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:29,929 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) [2022-02-18 14:51:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:30,616 INFO L93 Difference]: Finished difference Result 4519 states and 12420 transitions. [2022-02-18 14:51:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-18 14:51:30,617 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 [2022-02-18 14:51:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:30,624 INFO L225 Difference]: With dead ends: 4519 [2022-02-18 14:51:30,624 INFO L226 Difference]: Without dead ends: 4435 [2022-02-18 14:51:30,625 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 [2022-02-18 14:51:30,626 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 620 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:30,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1335 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2022-02-18 14:51:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 1840. [2022-02-18 14:51:30,669 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) [2022-02-18 14:51:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 5167 transitions. [2022-02-18 14:51:30,674 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 5167 transitions. Word has length 70 [2022-02-18 14:51:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:30,674 INFO L470 AbstractCegarLoop]: Abstraction has 1840 states and 5167 transitions. [2022-02-18 14:51:30,674 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) [2022-02-18 14:51:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 5167 transitions. [2022-02-18 14:51:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:30,678 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:30,679 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] [2022-02-18 14:51:30,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:30,897 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 [2022-02-18 14:51:30,897 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1419391795, now seen corresponding path program 17 times [2022-02-18 14:51:30,898 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:30,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700138867] [2022-02-18 14:51:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:30,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:30,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:30,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700138867] [2022-02-18 14:51:30,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700138867] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:30,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640508482] [2022-02-18 14:51:30,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:30,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:30,980 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) [2022-02-18 14:51:30,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-18 14:51:31,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 14:51:31,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:31,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-18 14:51:31,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:31,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:31,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640508482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:31,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:31,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2022-02-18 14:51:31,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064339812] [2022-02-18 14:51:31,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:31,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:31,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:31,458 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) [2022-02-18 14:51:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:31,735 INFO L93 Difference]: Finished difference Result 2482 states and 6932 transitions. [2022-02-18 14:51:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-18 14:51:31,735 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 [2022-02-18 14:51:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:31,738 INFO L225 Difference]: With dead ends: 2482 [2022-02-18 14:51:31,739 INFO L226 Difference]: Without dead ends: 2434 [2022-02-18 14:51:31,739 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 [2022-02-18 14:51:31,739 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 250 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:31,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 679 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:51:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-02-18 14:51:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1832. [2022-02-18 14:51:31,767 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) [2022-02-18 14:51:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 5145 transitions. [2022-02-18 14:51:31,771 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 5145 transitions. Word has length 70 [2022-02-18 14:51:31,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:31,771 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 5145 transitions. [2022-02-18 14:51:31,772 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) [2022-02-18 14:51:31,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 5145 transitions. [2022-02-18 14:51:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:31,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:31,776 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] [2022-02-18 14:51:31,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:31,999 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 [2022-02-18 14:51:31,999 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:31,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash -490468571, now seen corresponding path program 18 times [2022-02-18 14:51:32,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:32,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159072569] [2022-02-18 14:51:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:32,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:32,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159072569] [2022-02-18 14:51:32,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159072569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:32,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527728510] [2022-02-18 14:51:32,122 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:32,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:32,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:32,124 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) [2022-02-18 14:51:32,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-18 14:51:32,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:51:32,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:32,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-18 14:51:32,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:32,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:32,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527728510] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:32,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:32,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2022-02-18 14:51:32,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438651060] [2022-02-18 14:51:32,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:32,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-18 14:51:32,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-18 14:51:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-02-18 14:51:32,668 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) [2022-02-18 14:51:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:33,282 INFO L93 Difference]: Finished difference Result 2986 states and 8110 transitions. [2022-02-18 14:51:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-18 14:51:33,283 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 [2022-02-18 14:51:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:33,287 INFO L225 Difference]: With dead ends: 2986 [2022-02-18 14:51:33,287 INFO L226 Difference]: Without dead ends: 2956 [2022-02-18 14:51:33,288 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 [2022-02-18 14:51:33,288 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 429 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:33,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1432 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-02-18 14:51:33,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2000. [2022-02-18 14:51:33,322 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) [2022-02-18 14:51:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5651 transitions. [2022-02-18 14:51:33,326 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5651 transitions. Word has length 70 [2022-02-18 14:51:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:33,327 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5651 transitions. [2022-02-18 14:51:33,327 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) [2022-02-18 14:51:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5651 transitions. [2022-02-18 14:51:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:33,331 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:33,331 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] [2022-02-18 14:51:33,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:33,551 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 [2022-02-18 14:51:33,551 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash 43752443, now seen corresponding path program 19 times [2022-02-18 14:51:33,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:33,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155742840] [2022-02-18 14:51:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:33,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:33,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:33,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155742840] [2022-02-18 14:51:33,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155742840] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:33,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502638934] [2022-02-18 14:51:33,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:33,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:33,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:33,637 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) [2022-02-18 14:51:33,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-18 14:51:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:33,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:33,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:33,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:34,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502638934] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:34,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:34,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-18 14:51:34,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090622941] [2022-02-18 14:51:34,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:34,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:34,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:34,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:34,136 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) [2022-02-18 14:51:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:34,514 INFO L93 Difference]: Finished difference Result 2623 states and 7248 transitions. [2022-02-18 14:51:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-18 14:51:34,514 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 [2022-02-18 14:51:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:34,517 INFO L225 Difference]: With dead ends: 2623 [2022-02-18 14:51:34,518 INFO L226 Difference]: Without dead ends: 2575 [2022-02-18 14:51:34,518 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 [2022-02-18 14:51:34,518 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 442 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:34,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 712 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2022-02-18 14:51:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2184. [2022-02-18 14:51:34,544 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) [2022-02-18 14:51:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6193 transitions. [2022-02-18 14:51:34,547 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6193 transitions. Word has length 70 [2022-02-18 14:51:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:34,547 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6193 transitions. [2022-02-18 14:51:34,547 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) [2022-02-18 14:51:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6193 transitions. [2022-02-18 14:51:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:34,552 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:34,552 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] [2022-02-18 14:51:34,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:34,774 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 [2022-02-18 14:51:34,774 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:34,774 INFO L85 PathProgramCache]: Analyzing trace with hash 185043233, now seen corresponding path program 20 times [2022-02-18 14:51:34,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:34,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135825999] [2022-02-18 14:51:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:34,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:34,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:34,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135825999] [2022-02-18 14:51:34,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135825999] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:34,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907409349] [2022-02-18 14:51:34,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:34,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:34,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:34,855 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) [2022-02-18 14:51:34,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-18 14:51:34,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:34,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:34,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:34,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:35,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:51:35,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907409349] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:35,291 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:35,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-18 14:51:35,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016397616] [2022-02-18 14:51:35,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:35,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:35,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:35,293 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) [2022-02-18 14:51:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:35,816 INFO L93 Difference]: Finished difference Result 3459 states and 9481 transitions. [2022-02-18 14:51:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-18 14:51:35,816 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 [2022-02-18 14:51:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:35,821 INFO L225 Difference]: With dead ends: 3459 [2022-02-18 14:51:35,821 INFO L226 Difference]: Without dead ends: 3429 [2022-02-18 14:51:35,821 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 [2022-02-18 14:51:35,821 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 356 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:35,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1151 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2022-02-18 14:51:35,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2476. [2022-02-18 14:51:35,857 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) [2022-02-18 14:51:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 7056 transitions. [2022-02-18 14:51:35,862 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 7056 transitions. Word has length 70 [2022-02-18 14:51:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:35,863 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 7056 transitions. [2022-02-18 14:51:35,863 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) [2022-02-18 14:51:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 7056 transitions. [2022-02-18 14:51:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:35,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:35,867 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] [2022-02-18 14:51:35,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:36,089 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 [2022-02-18 14:51:36,091 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:36,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1353840581, now seen corresponding path program 21 times [2022-02-18 14:51:36,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:36,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942858543] [2022-02-18 14:51:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:36,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:36,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:36,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942858543] [2022-02-18 14:51:36,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942858543] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:36,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46100299] [2022-02-18 14:51:36,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:36,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:36,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:36,170 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) [2022-02-18 14:51:36,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-18 14:51:36,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:51:36,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:36,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:36,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:36,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:36,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46100299] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:36,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:36,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-18 14:51:36,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559673391] [2022-02-18 14:51:36,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:36,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:36,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:36,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:36,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:36,617 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) [2022-02-18 14:51:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:37,024 INFO L93 Difference]: Finished difference Result 3275 states and 9012 transitions. [2022-02-18 14:51:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-18 14:51:37,024 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 [2022-02-18 14:51:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:37,029 INFO L225 Difference]: With dead ends: 3275 [2022-02-18 14:51:37,029 INFO L226 Difference]: Without dead ends: 3227 [2022-02-18 14:51:37,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2022-02-18 14:51:37,029 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 491 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:37,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 922 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-02-18 14:51:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2344. [2022-02-18 14:51:37,071 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) [2022-02-18 14:51:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-18 14:51:37,077 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-18 14:51:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:37,077 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-18 14:51:37,077 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) [2022-02-18 14:51:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-18 14:51:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:37,082 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:37,082 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] [2022-02-18 14:51:37,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:37,303 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 [2022-02-18 14:51:37,303 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:37,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1435260253, now seen corresponding path program 22 times [2022-02-18 14:51:37,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:37,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025824271] [2022-02-18 14:51:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:37,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:37,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:37,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025824271] [2022-02-18 14:51:37,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025824271] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:37,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120734299] [2022-02-18 14:51:37,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:37,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:37,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:37,394 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) [2022-02-18 14:51:37,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-18 14:51:37,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:37,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:37,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:37,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:37,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:37,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120734299] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:37,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:37,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:37,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443736593] [2022-02-18 14:51:37,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:37,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:37,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:37,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:37,889 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) [2022-02-18 14:51:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:38,324 INFO L93 Difference]: Finished difference Result 2869 states and 7974 transitions. [2022-02-18 14:51:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-18 14:51:38,324 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 [2022-02-18 14:51:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:38,328 INFO L225 Difference]: With dead ends: 2869 [2022-02-18 14:51:38,328 INFO L226 Difference]: Without dead ends: 2797 [2022-02-18 14:51:38,329 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 [2022-02-18 14:51:38,329 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 346 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:38,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1244 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-02-18 14:51:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2348. [2022-02-18 14:51:38,364 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) [2022-02-18 14:51:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 6668 transitions. [2022-02-18 14:51:38,369 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 6668 transitions. Word has length 70 [2022-02-18 14:51:38,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:38,369 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 6668 transitions. [2022-02-18 14:51:38,369 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) [2022-02-18 14:51:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 6668 transitions. [2022-02-18 14:51:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:38,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:38,373 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] [2022-02-18 14:51:38,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:38,594 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 [2022-02-18 14:51:38,595 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:38,595 INFO L85 PathProgramCache]: Analyzing trace with hash 331693541, now seen corresponding path program 23 times [2022-02-18 14:51:38,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:38,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397612957] [2022-02-18 14:51:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:38,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:38,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:38,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397612957] [2022-02-18 14:51:38,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397612957] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:38,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941890629] [2022-02-18 14:51:38,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:38,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:38,676 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) [2022-02-18 14:51:38,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-18 14:51:38,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:51:38,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:38,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:38,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:38,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:51:39,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941890629] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:39,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:39,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-18 14:51:39,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508149414] [2022-02-18 14:51:39,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:39,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:39,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:39,115 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) [2022-02-18 14:51:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:39,659 INFO L93 Difference]: Finished difference Result 3827 states and 10486 transitions. [2022-02-18 14:51:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-18 14:51:39,660 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 [2022-02-18 14:51:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:39,665 INFO L225 Difference]: With dead ends: 3827 [2022-02-18 14:51:39,665 INFO L226 Difference]: Without dead ends: 3797 [2022-02-18 14:51:39,665 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 [2022-02-18 14:51:39,666 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 534 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:39,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 943 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-02-18 14:51:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2672. [2022-02-18 14:51:39,707 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) [2022-02-18 14:51:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 7663 transitions. [2022-02-18 14:51:39,712 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 7663 transitions. Word has length 70 [2022-02-18 14:51:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:39,713 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 7663 transitions. [2022-02-18 14:51:39,713 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) [2022-02-18 14:51:39,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 7663 transitions. [2022-02-18 14:51:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:39,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:39,718 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] [2022-02-18 14:51:39,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:39,940 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 [2022-02-18 14:51:39,941 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1207190273, now seen corresponding path program 24 times [2022-02-18 14:51:39,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:39,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360405480] [2022-02-18 14:51:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:40,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:40,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360405480] [2022-02-18 14:51:40,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360405480] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:40,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932081415] [2022-02-18 14:51:40,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:40,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:40,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:40,020 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) [2022-02-18 14:51:40,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-18 14:51:40,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:51:40,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:40,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:40,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:40,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:40,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932081415] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:40,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:40,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-18 14:51:40,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451053041] [2022-02-18 14:51:40,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:40,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:51:40,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:51:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:51:40,453 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) [2022-02-18 14:51:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:40,944 INFO L93 Difference]: Finished difference Result 3690 states and 10156 transitions. [2022-02-18 14:51:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-18 14:51:40,944 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 [2022-02-18 14:51:40,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:40,949 INFO L225 Difference]: With dead ends: 3690 [2022-02-18 14:51:40,949 INFO L226 Difference]: Without dead ends: 3642 [2022-02-18 14:51:40,949 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 [2022-02-18 14:51:40,950 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 427 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:40,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1300 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2022-02-18 14:51:40,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 2464. [2022-02-18 14:51:40,979 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) [2022-02-18 14:51:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 6995 transitions. [2022-02-18 14:51:40,983 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 6995 transitions. Word has length 70 [2022-02-18 14:51:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:40,983 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 6995 transitions. [2022-02-18 14:51:40,984 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) [2022-02-18 14:51:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 6995 transitions. [2022-02-18 14:51:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:40,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:40,988 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] [2022-02-18 14:51:41,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:41,200 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 [2022-02-18 14:51:41,200 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1581910561, now seen corresponding path program 25 times [2022-02-18 14:51:41,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:41,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984084553] [2022-02-18 14:51:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:41,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:41,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:41,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984084553] [2022-02-18 14:51:41,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984084553] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:41,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873542528] [2022-02-18 14:51:41,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:41,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:41,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:41,276 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) [2022-02-18 14:51:41,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-18 14:51:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:41,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:41,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:41,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:41,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873542528] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:41,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:41,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:41,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172296182] [2022-02-18 14:51:41,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:41,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:41,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:41,714 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) [2022-02-18 14:51:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:42,288 INFO L93 Difference]: Finished difference Result 3768 states and 10314 transitions. [2022-02-18 14:51:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-18 14:51:42,291 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 [2022-02-18 14:51:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:42,297 INFO L225 Difference]: With dead ends: 3768 [2022-02-18 14:51:42,297 INFO L226 Difference]: Without dead ends: 3696 [2022-02-18 14:51:42,298 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 [2022-02-18 14:51:42,298 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 534 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:42,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1259 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-02-18 14:51:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2344. [2022-02-18 14:51:42,324 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) [2022-02-18 14:51:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-18 14:51:42,328 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-18 14:51:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:42,328 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-18 14:51:42,328 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) [2022-02-18 14:51:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-18 14:51:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-18 14:51:42,331 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:42,331 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] [2022-02-18 14:51:42,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-18 14:51:42,531 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 [2022-02-18 14:51:42,532 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:42,532 INFO L85 PathProgramCache]: Analyzing trace with hash -869401037, now seen corresponding path program 26 times [2022-02-18 14:51:42,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:42,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124060167] [2022-02-18 14:51:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:42,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:42,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:42,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124060167] [2022-02-18 14:51:42,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124060167] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:42,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167907480] [2022-02-18 14:51:42,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:42,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:42,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:42,622 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) [2022-02-18 14:51:42,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-18 14:51:42,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:42,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:42,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:51:42,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:42,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:43,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167907480] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:43,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:43,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-18 14:51:43,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063842027] [2022-02-18 14:51:43,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:43,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-18 14:51:43,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-18 14:51:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-02-18 14:51:43,064 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) [2022-02-18 14:51:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:43,333 INFO L93 Difference]: Finished difference Result 2575 states and 7190 transitions. [2022-02-18 14:51:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-18 14:51:43,333 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 [2022-02-18 14:51:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:43,337 INFO L225 Difference]: With dead ends: 2575 [2022-02-18 14:51:43,337 INFO L226 Difference]: Without dead ends: 2527 [2022-02-18 14:51:43,337 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 [2022-02-18 14:51:43,337 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 270 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:43,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1036 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:51:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-02-18 14:51:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2344. [2022-02-18 14:51:43,360 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) [2022-02-18 14:51:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-18 14:51:43,363 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-18 14:51:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:43,363 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-18 14:51:43,363 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) [2022-02-18 14:51:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-18 14:51:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-18 14:51:43,366 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:43,367 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] [2022-02-18 14:51:43,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-18 14:51:43,567 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 [2022-02-18 14:51:43,567 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824483, now seen corresponding path program 27 times [2022-02-18 14:51:43,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:43,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690564544] [2022-02-18 14:51:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:43,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:43,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690564544] [2022-02-18 14:51:43,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690564544] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:43,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222320767] [2022-02-18 14:51:43,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:43,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:43,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:43,638 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) [2022-02-18 14:51:43,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-18 14:51:43,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:51:43,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:51:43,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:43,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:44,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222320767] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:44,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:44,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 14 [2022-02-18 14:51:44,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894176208] [2022-02-18 14:51:44,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:44,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-18 14:51:44,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:44,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-18 14:51:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-02-18 14:51:44,236 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) [2022-02-18 14:51:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:44,412 INFO L93 Difference]: Finished difference Result 5997 states and 17257 transitions. [2022-02-18 14:51:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-18 14:51:44,412 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 [2022-02-18 14:51:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:44,422 INFO L225 Difference]: With dead ends: 5997 [2022-02-18 14:51:44,422 INFO L226 Difference]: Without dead ends: 5679 [2022-02-18 14:51:44,422 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 [2022-02-18 14:51:44,422 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 329 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:44,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 943 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:51:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-02-18 14:51:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 3407. [2022-02-18 14:51:44,472 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) [2022-02-18 14:51:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 9794 transitions. [2022-02-18 14:51:44,478 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 9794 transitions. Word has length 72 [2022-02-18 14:51:44,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:44,478 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 9794 transitions. [2022-02-18 14:51:44,479 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) [2022-02-18 14:51:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 9794 transitions. [2022-02-18 14:51:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-18 14:51:44,484 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:44,484 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] [2022-02-18 14:51:44,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-18 14:51:44,685 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 [2022-02-18 14:51:44,685 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:44,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash -185719417, now seen corresponding path program 28 times [2022-02-18 14:51:44,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:44,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21308544] [2022-02-18 14:51:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:44,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:44,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:44,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21308544] [2022-02-18 14:51:44,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21308544] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:44,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436185114] [2022-02-18 14:51:44,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:44,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:44,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:44,805 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) [2022-02-18 14:51:44,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-18 14:51:44,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:44,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:44,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-18 14:51:44,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:45,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:45,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436185114] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:45,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:45,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-18 14:51:45,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148909442] [2022-02-18 14:51:45,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:45,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-18 14:51:45,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-18 14:51:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-02-18 14:51:45,637 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) [2022-02-18 14:51:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:47,202 INFO L93 Difference]: Finished difference Result 5692 states and 16101 transitions. [2022-02-18 14:51:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-18 14:51:47,203 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 [2022-02-18 14:51:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:47,212 INFO L225 Difference]: With dead ends: 5692 [2022-02-18 14:51:47,212 INFO L226 Difference]: Without dead ends: 5647 [2022-02-18 14:51:47,213 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 [2022-02-18 14:51:47,213 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 435 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:47,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 2289 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:51:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2022-02-18 14:51:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 4007. [2022-02-18 14:51:47,267 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) [2022-02-18 14:51:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 11564 transitions. [2022-02-18 14:51:47,277 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 11564 transitions. Word has length 72 [2022-02-18 14:51:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:47,278 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 11564 transitions. [2022-02-18 14:51:47,278 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) [2022-02-18 14:51:47,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 11564 transitions. [2022-02-18 14:51:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:51:47,286 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:47,286 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] [2022-02-18 14:51:47,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:47,490 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 [2022-02-18 14:51:47,490 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1623433347, now seen corresponding path program 29 times [2022-02-18 14:51:47,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:47,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230702027] [2022-02-18 14:51:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:47,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:47,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:47,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230702027] [2022-02-18 14:51:47,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230702027] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:47,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199521962] [2022-02-18 14:51:47,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:47,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:47,635 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) [2022-02-18 14:51:47,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-18 14:51:47,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 14:51:47,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:47,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:51:47,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:48,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:48,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199521962] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:48,519 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:48,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 31 [2022-02-18 14:51:48,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855102393] [2022-02-18 14:51:48,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:48,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:51:48,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:48,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:51:48,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:51:48,520 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) [2022-02-18 14:51:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:50,082 INFO L93 Difference]: Finished difference Result 7384 states and 21033 transitions. [2022-02-18 14:51:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-18 14:51:50,082 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 [2022-02-18 14:51:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:50,095 INFO L225 Difference]: With dead ends: 7384 [2022-02-18 14:51:50,095 INFO L226 Difference]: Without dead ends: 7339 [2022-02-18 14:51:50,096 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 [2022-02-18 14:51:50,096 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 876 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:50,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 2685 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2022-02-18 14:51:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 4149. [2022-02-18 14:51:50,157 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) [2022-02-18 14:51:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 11958 transitions. [2022-02-18 14:51:50,166 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 11958 transitions. Word has length 77 [2022-02-18 14:51:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:50,166 INFO L470 AbstractCegarLoop]: Abstraction has 4149 states and 11958 transitions. [2022-02-18 14:51:50,166 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) [2022-02-18 14:51:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 11958 transitions. [2022-02-18 14:51:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:51:50,172 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:50,172 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] [2022-02-18 14:51:50,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-18 14:51:50,372 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 [2022-02-18 14:51:50,372 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:50,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1870223975, now seen corresponding path program 30 times [2022-02-18 14:51:50,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:50,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130270144] [2022-02-18 14:51:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:50,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:50,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:50,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130270144] [2022-02-18 14:51:50,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130270144] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:50,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507358092] [2022-02-18 14:51:50,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:50,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:50,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:50,530 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) [2022-02-18 14:51:50,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-18 14:51:50,591 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:51:50,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:50,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:51:50,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:50,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:51,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507358092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:51,196 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:51,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-02-18 14:51:51,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675123887] [2022-02-18 14:51:51,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:51,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:51:51,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:51:51,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:51:51,198 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) [2022-02-18 14:51:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:53,135 INFO L93 Difference]: Finished difference Result 7597 states and 21455 transitions. [2022-02-18 14:51:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-18 14:51:53,135 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 [2022-02-18 14:51:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:53,147 INFO L225 Difference]: With dead ends: 7597 [2022-02-18 14:51:53,147 INFO L226 Difference]: Without dead ends: 7552 [2022-02-18 14:51:53,148 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 [2022-02-18 14:51:53,148 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 781 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:53,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 3145 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:51:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2022-02-18 14:51:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 4165. [2022-02-18 14:51:53,229 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) [2022-02-18 14:51:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 12002 transitions. [2022-02-18 14:51:53,238 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 12002 transitions. Word has length 77 [2022-02-18 14:51:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:53,238 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 12002 transitions. [2022-02-18 14:51:53,239 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) [2022-02-18 14:51:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 12002 transitions. [2022-02-18 14:51:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:51:53,246 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:53,246 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] [2022-02-18 14:51:53,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-18 14:51:53,459 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 [2022-02-18 14:51:53,459 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1259138339, now seen corresponding path program 31 times [2022-02-18 14:51:53,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:53,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174100759] [2022-02-18 14:51:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:53,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:53,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174100759] [2022-02-18 14:51:53,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174100759] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:53,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374352062] [2022-02-18 14:51:53,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:53,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:53,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:53,601 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) [2022-02-18 14:51:53,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-18 14:51:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:53,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:51:53,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:53,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:54,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374352062] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:54,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:54,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-02-18 14:51:54,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104495305] [2022-02-18 14:51:54,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:54,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:51:54,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:51:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:51:54,360 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) [2022-02-18 14:51:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:56,232 INFO L93 Difference]: Finished difference Result 7442 states and 21104 transitions. [2022-02-18 14:51:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-18 14:51:56,233 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 [2022-02-18 14:51:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:56,243 INFO L225 Difference]: With dead ends: 7442 [2022-02-18 14:51:56,244 INFO L226 Difference]: Without dead ends: 7397 [2022-02-18 14:51:56,245 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 [2022-02-18 14:51:56,245 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 852 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:56,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 2527 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2022-02-18 14:51:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 4181. [2022-02-18 14:51:56,333 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) [2022-02-18 14:51:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 12046 transitions. [2022-02-18 14:51:56,343 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 12046 transitions. Word has length 77 [2022-02-18 14:51:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:56,344 INFO L470 AbstractCegarLoop]: Abstraction has 4181 states and 12046 transitions. [2022-02-18 14:51:56,344 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) [2022-02-18 14:51:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 12046 transitions. [2022-02-18 14:51:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:51:56,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:56,351 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] [2022-02-18 14:51:56,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-18 14:51:56,565 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 [2022-02-18 14:51:56,565 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash -962724129, now seen corresponding path program 32 times [2022-02-18 14:51:56,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:56,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403870109] [2022-02-18 14:51:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:56,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:56,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403870109] [2022-02-18 14:51:56,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403870109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:56,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356844790] [2022-02-18 14:51:56,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:56,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:56,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:56,698 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) [2022-02-18 14:51:56,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-18 14:51:56,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:56,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:56,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:51:56,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:57,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:57,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356844790] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:57,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:57,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-18 14:51:57,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659862546] [2022-02-18 14:51:57,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:57,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-18 14:51:57,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:57,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-18 14:51:57,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-02-18 14:51:57,518 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) [2022-02-18 14:52:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:00,789 INFO L93 Difference]: Finished difference Result 8898 states and 24913 transitions. [2022-02-18 14:52:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-18 14:52:00,789 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 [2022-02-18 14:52:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:00,801 INFO L225 Difference]: With dead ends: 8898 [2022-02-18 14:52:00,801 INFO L226 Difference]: Without dead ends: 8883 [2022-02-18 14:52:00,802 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 [2022-02-18 14:52:00,802 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1270 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:00,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 3069 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:52:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-02-18 14:52:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 4189. [2022-02-18 14:52:00,875 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) [2022-02-18 14:52:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12076 transitions. [2022-02-18 14:52:00,885 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12076 transitions. Word has length 77 [2022-02-18 14:52:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:00,886 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12076 transitions. [2022-02-18 14:52:00,886 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) [2022-02-18 14:52:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12076 transitions. [2022-02-18 14:52:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:00,894 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:00,894 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] [2022-02-18 14:52:00,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-18 14:52:01,111 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 [2022-02-18 14:52:01,111 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1793359353, now seen corresponding path program 33 times [2022-02-18 14:52:01,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:01,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137122408] [2022-02-18 14:52:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:01,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:01,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:01,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137122408] [2022-02-18 14:52:01,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137122408] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:01,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935438026] [2022-02-18 14:52:01,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:52:01,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:01,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:01,246 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) [2022-02-18 14:52:01,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-18 14:52:01,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-18 14:52:01,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:01,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:52:01,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:01,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:01,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935438026] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:01,924 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:01,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-02-18 14:52:01,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670911291] [2022-02-18 14:52:01,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:01,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:52:01,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:52:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:52:01,925 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) [2022-02-18 14:52:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:04,592 INFO L93 Difference]: Finished difference Result 8616 states and 24405 transitions. [2022-02-18 14:52:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-18 14:52:04,593 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 [2022-02-18 14:52:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:04,604 INFO L225 Difference]: With dead ends: 8616 [2022-02-18 14:52:04,604 INFO L226 Difference]: Without dead ends: 8592 [2022-02-18 14:52:04,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6282 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3113, Invalid=15247, Unknown=0, NotChecked=0, Total=18360 [2022-02-18 14:52:04,606 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1422 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:04,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 3091 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:52:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-02-18 14:52:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 4189. [2022-02-18 14:52:04,673 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) [2022-02-18 14:52:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12068 transitions. [2022-02-18 14:52:04,679 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12068 transitions. Word has length 77 [2022-02-18 14:52:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:04,680 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12068 transitions. [2022-02-18 14:52:04,680 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) [2022-02-18 14:52:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12068 transitions. [2022-02-18 14:52:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:04,684 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:04,684 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] [2022-02-18 14:52:04,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-18 14:52:04,885 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 [2022-02-18 14:52:04,885 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 802013543, now seen corresponding path program 34 times [2022-02-18 14:52:04,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:04,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347985581] [2022-02-18 14:52:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:05,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:05,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347985581] [2022-02-18 14:52:05,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347985581] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:05,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091409556] [2022-02-18 14:52:05,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:52:05,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:05,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:05,040 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) [2022-02-18 14:52:05,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-18 14:52:05,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:52:05,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:05,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:52:05,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:05,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:05,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091409556] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:05,852 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:05,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 34 [2022-02-18 14:52:05,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879981553] [2022-02-18 14:52:05,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:05,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:52:05,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:52:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:52:05,853 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) [2022-02-18 14:52:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:06,811 INFO L93 Difference]: Finished difference Result 6740 states and 19159 transitions. [2022-02-18 14:52:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-18 14:52:06,812 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 [2022-02-18 14:52:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:06,823 INFO L225 Difference]: With dead ends: 6740 [2022-02-18 14:52:06,823 INFO L226 Difference]: Without dead ends: 6695 [2022-02-18 14:52:06,824 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 [2022-02-18 14:52:06,824 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 647 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:06,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 2317 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:52:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2022-02-18 14:52:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 4197. [2022-02-18 14:52:06,881 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) [2022-02-18 14:52:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 12090 transitions. [2022-02-18 14:52:06,889 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 12090 transitions. Word has length 77 [2022-02-18 14:52:06,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:06,889 INFO L470 AbstractCegarLoop]: Abstraction has 4197 states and 12090 transitions. [2022-02-18 14:52:06,889 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) [2022-02-18 14:52:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 12090 transitions. [2022-02-18 14:52:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:06,894 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:06,895 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] [2022-02-18 14:52:06,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-18 14:52:07,095 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 [2022-02-18 14:52:07,095 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash 190927907, now seen corresponding path program 35 times [2022-02-18 14:52:07,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:07,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128089436] [2022-02-18 14:52:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:07,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:07,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128089436] [2022-02-18 14:52:07,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128089436] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:07,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634741084] [2022-02-18 14:52:07,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:52:07,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:07,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:07,240 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) [2022-02-18 14:52:07,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-18 14:52:07,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 14:52:07,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:07,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:52:07,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:07,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:08,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634741084] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:08,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:08,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-02-18 14:52:08,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827667578] [2022-02-18 14:52:08,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:08,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:52:08,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:52:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:52:08,077 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) [2022-02-18 14:52:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:10,914 INFO L93 Difference]: Finished difference Result 10164 states and 28356 transitions. [2022-02-18 14:52:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-18 14:52:10,915 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 [2022-02-18 14:52:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:10,931 INFO L225 Difference]: With dead ends: 10164 [2022-02-18 14:52:10,931 INFO L226 Difference]: Without dead ends: 10014 [2022-02-18 14:52:10,932 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 [2022-02-18 14:52:10,933 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 800 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:10,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 4282 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:52:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10014 states. [2022-02-18 14:52:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10014 to 4685. [2022-02-18 14:52:11,028 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) [2022-02-18 14:52:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 13528 transitions. [2022-02-18 14:52:11,035 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 13528 transitions. Word has length 77 [2022-02-18 14:52:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:11,036 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 13528 transitions. [2022-02-18 14:52:11,036 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) [2022-02-18 14:52:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 13528 transitions. [2022-02-18 14:52:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:11,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:11,041 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] [2022-02-18 14:52:11,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-18 14:52:11,242 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 [2022-02-18 14:52:11,242 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2030934561, now seen corresponding path program 36 times [2022-02-18 14:52:11,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:11,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172587482] [2022-02-18 14:52:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:11,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:11,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:11,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172587482] [2022-02-18 14:52:11,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172587482] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:11,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492251187] [2022-02-18 14:52:11,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:52:11,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:11,355 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) [2022-02-18 14:52:11,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-18 14:52:11,427 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:52:11,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:11,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:52:11,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:11,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:12,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492251187] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:12,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:12,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-18 14:52:12,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659774372] [2022-02-18 14:52:12,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:12,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:12,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:12,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:12,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:12,180 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) [2022-02-18 14:52:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:15,996 INFO L93 Difference]: Finished difference Result 12402 states and 34548 transitions. [2022-02-18 14:52:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-18 14:52:15,996 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 [2022-02-18 14:52:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:16,019 INFO L225 Difference]: With dead ends: 12402 [2022-02-18 14:52:16,019 INFO L226 Difference]: Without dead ends: 12372 [2022-02-18 14:52:16,021 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 [2022-02-18 14:52:16,026 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1286 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:16,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 3975 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:52:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2022-02-18 14:52:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 5593. [2022-02-18 14:52:16,137 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) [2022-02-18 14:52:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 16437 transitions. [2022-02-18 14:52:16,149 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 16437 transitions. Word has length 77 [2022-02-18 14:52:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:16,149 INFO L470 AbstractCegarLoop]: Abstraction has 5593 states and 16437 transitions. [2022-02-18 14:52:16,149 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) [2022-02-18 14:52:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 16437 transitions. [2022-02-18 14:52:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:16,156 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:16,156 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] [2022-02-18 14:52:16,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-18 14:52:16,356 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 [2022-02-18 14:52:16,357 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 725148921, now seen corresponding path program 37 times [2022-02-18 14:52:16,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:16,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66147579] [2022-02-18 14:52:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:16,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:16,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66147579] [2022-02-18 14:52:16,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66147579] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:16,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246421170] [2022-02-18 14:52:16,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:52:16,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:16,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:16,491 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) [2022-02-18 14:52:16,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-18 14:52:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:16,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:52:16,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:16,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:17,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246421170] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:17,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:17,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-18 14:52:17,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653158983] [2022-02-18 14:52:17,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:17,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:17,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:17,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:17,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:17,232 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) [2022-02-18 14:52:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:19,793 INFO L93 Difference]: Finished difference Result 9913 states and 27965 transitions. [2022-02-18 14:52:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-18 14:52:19,793 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 [2022-02-18 14:52:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:19,808 INFO L225 Difference]: With dead ends: 9913 [2022-02-18 14:52:19,808 INFO L226 Difference]: Without dead ends: 9865 [2022-02-18 14:52:19,809 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 [2022-02-18 14:52:19,809 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1091 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:19,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 3323 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:52:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2022-02-18 14:52:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5585. [2022-02-18 14:52:19,893 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) [2022-02-18 14:52:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 16399 transitions. [2022-02-18 14:52:19,903 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 16399 transitions. Word has length 77 [2022-02-18 14:52:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:19,903 INFO L470 AbstractCegarLoop]: Abstraction has 5585 states and 16399 transitions. [2022-02-18 14:52:19,903 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) [2022-02-18 14:52:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 16399 transitions. [2022-02-18 14:52:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:19,910 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:19,910 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] [2022-02-18 14:52:19,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-18 14:52:20,110 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 [2022-02-18 14:52:20,111 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:20,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1428795491, now seen corresponding path program 38 times [2022-02-18 14:52:20,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:20,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455526836] [2022-02-18 14:52:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:20,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:20,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455526836] [2022-02-18 14:52:20,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455526836] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:20,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542154681] [2022-02-18 14:52:20,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:52:20,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:20,263 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) [2022-02-18 14:52:20,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-18 14:52:20,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:52:20,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:20,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:52:20,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:20,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:21,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542154681] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:21,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:21,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-02-18 14:52:21,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202384035] [2022-02-18 14:52:21,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:21,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:52:21,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:52:21,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:52:21,014 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) [2022-02-18 14:52:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:22,717 INFO L93 Difference]: Finished difference Result 9863 states and 28180 transitions. [2022-02-18 14:52:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-18 14:52:22,717 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 [2022-02-18 14:52:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:22,732 INFO L225 Difference]: With dead ends: 9863 [2022-02-18 14:52:22,733 INFO L226 Difference]: Without dead ends: 9713 [2022-02-18 14:52:22,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1807, Invalid=8293, Unknown=0, NotChecked=0, Total=10100 [2022-02-18 14:52:22,734 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 650 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:22,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 3438 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2022-02-18 14:52:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 5681. [2022-02-18 14:52:22,839 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) [2022-02-18 14:52:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 16671 transitions. [2022-02-18 14:52:22,849 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 16671 transitions. Word has length 77 [2022-02-18 14:52:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:22,849 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 16671 transitions. [2022-02-18 14:52:22,849 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) [2022-02-18 14:52:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 16671 transitions. [2022-02-18 14:52:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:22,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:22,856 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] [2022-02-18 14:52:22,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-18 14:52:23,056 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 [2022-02-18 14:52:23,056 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash -793066977, now seen corresponding path program 39 times [2022-02-18 14:52:23,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:23,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381498724] [2022-02-18 14:52:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:23,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:23,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:23,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381498724] [2022-02-18 14:52:23,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381498724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:23,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812305958] [2022-02-18 14:52:23,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:52:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:23,203 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) [2022-02-18 14:52:23,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-18 14:52:23,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:52:23,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:23,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:52:23,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:23,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:23,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812305958] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:23,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:23,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 34 [2022-02-18 14:52:23,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038014826] [2022-02-18 14:52:23,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:23,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:52:23,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:23,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:52:23,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:52:23,858 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) [2022-02-18 14:52:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:27,509 INFO L93 Difference]: Finished difference Result 13788 states and 39217 transitions. [2022-02-18 14:52:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-02-18 14:52:27,510 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 [2022-02-18 14:52:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:27,532 INFO L225 Difference]: With dead ends: 13788 [2022-02-18 14:52:27,532 INFO L226 Difference]: Without dead ends: 13758 [2022-02-18 14:52:27,533 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 [2022-02-18 14:52:27,534 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1620 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:27,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 3432 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:52:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13758 states. [2022-02-18 14:52:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13758 to 7369. [2022-02-18 14:52:27,671 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) [2022-02-18 14:52:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 21905 transitions. [2022-02-18 14:52:27,685 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 21905 transitions. Word has length 77 [2022-02-18 14:52:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:27,686 INFO L470 AbstractCegarLoop]: Abstraction has 7369 states and 21905 transitions. [2022-02-18 14:52:27,686 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) [2022-02-18 14:52:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 21905 transitions. [2022-02-18 14:52:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:27,699 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:27,699 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] [2022-02-18 14:52:27,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-18 14:52:27,912 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 [2022-02-18 14:52:27,912 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:27,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1963016505, now seen corresponding path program 40 times [2022-02-18 14:52:27,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:27,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702626993] [2022-02-18 14:52:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:28,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:28,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702626993] [2022-02-18 14:52:28,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702626993] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:28,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519245950] [2022-02-18 14:52:28,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:52:28,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:28,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:28,055 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) [2022-02-18 14:52:28,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-18 14:52:28,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:52:28,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:28,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:52:28,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:28,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:28,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519245950] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:28,849 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:28,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-18 14:52:28,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505948417] [2022-02-18 14:52:28,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:28,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:28,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:28,850 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) [2022-02-18 14:52:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:30,895 INFO L93 Difference]: Finished difference Result 12790 states and 37282 transitions. [2022-02-18 14:52:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-18 14:52:30,895 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 [2022-02-18 14:52:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:30,923 INFO L225 Difference]: With dead ends: 12790 [2022-02-18 14:52:30,924 INFO L226 Difference]: Without dead ends: 12742 [2022-02-18 14:52:30,925 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 [2022-02-18 14:52:30,926 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1152 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:30,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3701 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:52:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12742 states. [2022-02-18 14:52:31,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12742 to 7909. [2022-02-18 14:52:31,114 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) [2022-02-18 14:52:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 23562 transitions. [2022-02-18 14:52:31,129 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 23562 transitions. Word has length 77 [2022-02-18 14:52:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:31,130 INFO L470 AbstractCegarLoop]: Abstraction has 7909 states and 23562 transitions. [2022-02-18 14:52:31,130 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) [2022-02-18 14:52:31,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 23562 transitions. [2022-02-18 14:52:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:31,142 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:31,142 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] [2022-02-18 14:52:31,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-18 14:52:31,355 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 [2022-02-18 14:52:31,355 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:31,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2104307295, now seen corresponding path program 41 times [2022-02-18 14:52:31,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:31,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835939071] [2022-02-18 14:52:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:31,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:31,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835939071] [2022-02-18 14:52:31,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835939071] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:31,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859567682] [2022-02-18 14:52:31,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:52:31,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:31,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:31,475 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) [2022-02-18 14:52:31,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-18 14:52:31,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 14:52:31,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:31,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:52:31,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:31,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:32,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859567682] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:32,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:32,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-18 14:52:32,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019849622] [2022-02-18 14:52:32,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:32,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-18 14:52:32,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:32,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-18 14:52:32,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-02-18 14:52:32,206 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) [2022-02-18 14:52:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:34,268 INFO L93 Difference]: Finished difference Result 13751 states and 39970 transitions. [2022-02-18 14:52:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-18 14:52:34,269 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 [2022-02-18 14:52:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:34,292 INFO L225 Difference]: With dead ends: 13751 [2022-02-18 14:52:34,292 INFO L226 Difference]: Without dead ends: 13721 [2022-02-18 14:52:34,294 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 [2022-02-18 14:52:34,294 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 908 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:34,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 2818 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2022-02-18 14:52:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 8425. [2022-02-18 14:52:34,423 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) [2022-02-18 14:52:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 25077 transitions. [2022-02-18 14:52:34,438 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 25077 transitions. Word has length 77 [2022-02-18 14:52:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:34,439 INFO L470 AbstractCegarLoop]: Abstraction has 8425 states and 25077 transitions. [2022-02-18 14:52:34,439 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) [2022-02-18 14:52:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 25077 transitions. [2022-02-18 14:52:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:34,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:34,450 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] [2022-02-18 14:52:34,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-18 14:52:34,650 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 [2022-02-18 14:52:34,651 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 565423481, now seen corresponding path program 42 times [2022-02-18 14:52:34,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:34,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813615908] [2022-02-18 14:52:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:34,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:34,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:34,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813615908] [2022-02-18 14:52:34,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813615908] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:34,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489469065] [2022-02-18 14:52:34,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:52:34,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:34,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:34,797 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) [2022-02-18 14:52:34,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-18 14:52:34,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 14:52:34,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:34,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:52:34,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:35,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:35,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489469065] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:35,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:35,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-18 14:52:35,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716947175] [2022-02-18 14:52:35,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:35,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-18 14:52:35,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-18 14:52:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-02-18 14:52:35,479 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) [2022-02-18 14:52:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:36,837 INFO L93 Difference]: Finished difference Result 13035 states and 37943 transitions. [2022-02-18 14:52:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-18 14:52:36,838 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 [2022-02-18 14:52:36,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:36,861 INFO L225 Difference]: With dead ends: 13035 [2022-02-18 14:52:36,861 INFO L226 Difference]: Without dead ends: 12987 [2022-02-18 14:52:36,862 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 [2022-02-18 14:52:36,863 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 824 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:36,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 2424 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:52:36,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2022-02-18 14:52:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 8073. [2022-02-18 14:52:37,042 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) [2022-02-18 14:52:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 24037 transitions. [2022-02-18 14:52:37,060 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 24037 transitions. Word has length 77 [2022-02-18 14:52:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:37,061 INFO L470 AbstractCegarLoop]: Abstraction has 8073 states and 24037 transitions. [2022-02-18 14:52:37,061 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) [2022-02-18 14:52:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 24037 transitions. [2022-02-18 14:52:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:37,071 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:37,071 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] [2022-02-18 14:52:37,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-02-18 14:52:37,272 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 [2022-02-18 14:52:37,272 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -940442981, now seen corresponding path program 43 times [2022-02-18 14:52:37,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:37,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887888384] [2022-02-18 14:52:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:37,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:37,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887888384] [2022-02-18 14:52:37,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887888384] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:37,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760152817] [2022-02-18 14:52:37,396 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:52:37,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:37,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:37,398 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) [2022-02-18 14:52:37,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-18 14:52:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:37,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:52:37,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:37,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:38,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760152817] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:38,084 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:38,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-18 14:52:38,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428195936] [2022-02-18 14:52:38,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:38,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-18 14:52:38,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-18 14:52:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-02-18 14:52:38,085 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) [2022-02-18 14:52:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:38,746 INFO L93 Difference]: Finished difference Result 9873 states and 29356 transitions. [2022-02-18 14:52:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-18 14:52:38,747 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 [2022-02-18 14:52:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:38,762 INFO L225 Difference]: With dead ends: 9873 [2022-02-18 14:52:38,762 INFO L226 Difference]: Without dead ends: 9837 [2022-02-18 14:52:38,763 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 [2022-02-18 14:52:38,763 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 642 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:38,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1874 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:52:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2022-02-18 14:52:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 8077. [2022-02-18 14:52:38,867 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) [2022-02-18 14:52:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 24048 transitions. [2022-02-18 14:52:38,940 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 24048 transitions. Word has length 77 [2022-02-18 14:52:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:38,940 INFO L470 AbstractCegarLoop]: Abstraction has 8077 states and 24048 transitions. [2022-02-18 14:52:38,940 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) [2022-02-18 14:52:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 24048 transitions. [2022-02-18 14:52:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:38,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:38,949 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] [2022-02-18 14:52:38,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-18 14:52:39,151 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 [2022-02-18 14:52:39,151 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1822451929, now seen corresponding path program 44 times [2022-02-18 14:52:39,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:39,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407306020] [2022-02-18 14:52:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:39,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:39,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:39,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407306020] [2022-02-18 14:52:39,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407306020] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:39,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221816794] [2022-02-18 14:52:39,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:52:39,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:39,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:39,299 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) [2022-02-18 14:52:39,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-18 14:52:39,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:52:39,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:39,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:52:39,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:39,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:40,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221816794] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:40,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:40,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 35 [2022-02-18 14:52:40,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607801641] [2022-02-18 14:52:40,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:40,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:52:40,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:52:40,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:52:40,035 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) [2022-02-18 14:52:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:42,682 INFO L93 Difference]: Finished difference Result 14182 states and 41355 transitions. [2022-02-18 14:52:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-18 14:52:42,682 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 [2022-02-18 14:52:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:42,707 INFO L225 Difference]: With dead ends: 14182 [2022-02-18 14:52:42,708 INFO L226 Difference]: Without dead ends: 14107 [2022-02-18 14:52:42,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6721 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3704, Invalid=15756, Unknown=0, NotChecked=0, Total=19460 [2022-02-18 14:52:42,709 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 740 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:42,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 3417 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:52:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2022-02-18 14:52:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 8733. [2022-02-18 14:52:42,841 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) [2022-02-18 14:52:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 26000 transitions. [2022-02-18 14:52:42,858 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 26000 transitions. Word has length 77 [2022-02-18 14:52:42,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:42,858 INFO L470 AbstractCegarLoop]: Abstraction has 8733 states and 26000 transitions. [2022-02-18 14:52:42,858 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) [2022-02-18 14:52:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 26000 transitions. [2022-02-18 14:52:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:42,869 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:42,869 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] [2022-02-18 14:52:42,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-18 14:52:43,079 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 [2022-02-18 14:52:43,079 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash -520158177, now seen corresponding path program 45 times [2022-02-18 14:52:43,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:43,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812941534] [2022-02-18 14:52:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:43,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:43,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:43,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812941534] [2022-02-18 14:52:43,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812941534] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:43,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082468200] [2022-02-18 14:52:43,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:52:43,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:43,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:43,208 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) [2022-02-18 14:52:43,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-18 14:52:43,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:52:43,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:43,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:52:43,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:43,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:43,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082468200] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:43,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:43,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-02-18 14:52:43,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919808037] [2022-02-18 14:52:43,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:43,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:52:43,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:52:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:52:43,901 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) [2022-02-18 14:52:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:48,212 INFO L93 Difference]: Finished difference Result 18496 states and 53581 transitions. [2022-02-18 14:52:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-18 14:52:48,212 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 [2022-02-18 14:52:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:48,244 INFO L225 Difference]: With dead ends: 18496 [2022-02-18 14:52:48,245 INFO L226 Difference]: Without dead ends: 18466 [2022-02-18 14:52:48,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12734 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5678, Invalid=27994, Unknown=0, NotChecked=0, Total=33672 [2022-02-18 14:52:48,246 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1517 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:48,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 4363 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 14:52:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2022-02-18 14:52:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 11413. [2022-02-18 14:52:48,452 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) [2022-02-18 14:52:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 34210 transitions. [2022-02-18 14:52:48,476 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 34210 transitions. Word has length 77 [2022-02-18 14:52:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:48,476 INFO L470 AbstractCegarLoop]: Abstraction has 11413 states and 34210 transitions. [2022-02-18 14:52:48,476 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) [2022-02-18 14:52:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 34210 transitions. [2022-02-18 14:52:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:48,491 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:48,491 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] [2022-02-18 14:52:48,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-18 14:52:48,691 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 [2022-02-18 14:52:48,692 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:48,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:48,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2059041991, now seen corresponding path program 46 times [2022-02-18 14:52:48,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:48,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883196451] [2022-02-18 14:52:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:48,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:48,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883196451] [2022-02-18 14:52:48,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883196451] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:48,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153486584] [2022-02-18 14:52:48,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:52:48,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:48,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:48,805 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) [2022-02-18 14:52:48,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-18 14:52:48,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:52:48,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:48,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:52:48,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:49,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:49,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153486584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:49,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:49,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-18 14:52:49,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400268956] [2022-02-18 14:52:49,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:49,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:49,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:49,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:49,495 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) [2022-02-18 14:52:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:51,792 INFO L93 Difference]: Finished difference Result 17859 states and 52232 transitions. [2022-02-18 14:52:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-18 14:52:51,793 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 [2022-02-18 14:52:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:51,824 INFO L225 Difference]: With dead ends: 17859 [2022-02-18 14:52:51,825 INFO L226 Difference]: Without dead ends: 17787 [2022-02-18 14:52:51,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3883 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2109, Invalid=10323, Unknown=0, NotChecked=0, Total=12432 [2022-02-18 14:52:51,826 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1175 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:51,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 2979 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2022-02-18 14:52:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 11969. [2022-02-18 14:52:52,022 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) [2022-02-18 14:52:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11969 states to 11969 states and 35975 transitions. [2022-02-18 14:52:52,046 INFO L78 Accepts]: Start accepts. Automaton has 11969 states and 35975 transitions. Word has length 77 [2022-02-18 14:52:52,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:52,047 INFO L470 AbstractCegarLoop]: Abstraction has 11969 states and 35975 transitions. [2022-02-18 14:52:52,047 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) [2022-02-18 14:52:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 11969 states and 35975 transitions. [2022-02-18 14:52:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:52,062 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:52,062 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] [2022-02-18 14:52:52,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:52,262 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 [2022-02-18 14:52:52,263 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash 730058843, now seen corresponding path program 47 times [2022-02-18 14:52:52,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:52,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618882656] [2022-02-18 14:52:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:52,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:52,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618882656] [2022-02-18 14:52:52,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618882656] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:52,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522071132] [2022-02-18 14:52:52,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:52:52,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:52,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:52,391 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) [2022-02-18 14:52:52,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-18 14:52:52,462 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 14:52:52,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:52,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-18 14:52:52,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:52,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:52,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522071132] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:52,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:52,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-18 14:52:52,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004294631] [2022-02-18 14:52:52,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:52,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-18 14:52:52,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-18 14:52:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2022-02-18 14:52:52,999 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) [2022-02-18 14:52:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:54,566 INFO L93 Difference]: Finished difference Result 22953 states and 67933 transitions. [2022-02-18 14:52:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-18 14:52:54,567 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 [2022-02-18 14:52:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:54,609 INFO L225 Difference]: With dead ends: 22953 [2022-02-18 14:52:54,609 INFO L226 Difference]: Without dead ends: 22881 [2022-02-18 14:52:54,611 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 [2022-02-18 14:52:54,611 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 650 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:54,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 2387 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:52:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22881 states. [2022-02-18 14:52:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22881 to 12161. [2022-02-18 14:52:54,865 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) [2022-02-18 14:52:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12161 states to 12161 states and 36535 transitions. [2022-02-18 14:52:54,890 INFO L78 Accepts]: Start accepts. Automaton has 12161 states and 36535 transitions. Word has length 77 [2022-02-18 14:52:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:54,891 INFO L470 AbstractCegarLoop]: Abstraction has 12161 states and 36535 transitions. [2022-02-18 14:52:54,891 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) [2022-02-18 14:52:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12161 states and 36535 transitions. [2022-02-18 14:52:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:52:54,907 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:54,907 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] [2022-02-18 14:52:54,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:55,108 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 [2022-02-18 14:52:55,108 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1998644761, now seen corresponding path program 48 times [2022-02-18 14:52:55,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:55,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309752221] [2022-02-18 14:52:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:55,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:55,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309752221] [2022-02-18 14:52:55,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309752221] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:55,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18626867] [2022-02-18 14:52:55,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:52:55,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:55,268 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) [2022-02-18 14:52:55,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-18 14:52:55,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:52:55,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:55,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-18 14:52:55,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:55,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:55,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18626867] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:55,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:55,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 32 [2022-02-18 14:52:55,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725964381] [2022-02-18 14:52:55,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:55,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:55,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:55,970 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) [2022-02-18 14:53:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:01,326 INFO L93 Difference]: Finished difference Result 29756 states and 87065 transitions. [2022-02-18 14:53:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-02-18 14:53:01,327 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 [2022-02-18 14:53:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:01,386 INFO L225 Difference]: With dead ends: 29756 [2022-02-18 14:53:01,387 INFO L226 Difference]: Without dead ends: 29411 [2022-02-18 14:53:01,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23300 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8315, Invalid=49045, Unknown=0, NotChecked=0, Total=57360 [2022-02-18 14:53:01,391 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1590 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:01,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 3472 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:53:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29411 states. [2022-02-18 14:53:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29411 to 15768. [2022-02-18 14:53:01,731 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) [2022-02-18 14:53:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15768 states to 15768 states and 47087 transitions. [2022-02-18 14:53:01,766 INFO L78 Accepts]: Start accepts. Automaton has 15768 states and 47087 transitions. Word has length 77 [2022-02-18 14:53:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:01,766 INFO L470 AbstractCegarLoop]: Abstraction has 15768 states and 47087 transitions. [2022-02-18 14:53:01,766 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) [2022-02-18 14:53:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 15768 states and 47087 transitions. [2022-02-18 14:53:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:01,788 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:01,789 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] [2022-02-18 14:53:01,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-18 14:53:01,989 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 [2022-02-18 14:53:01,989 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash -72915937, now seen corresponding path program 49 times [2022-02-18 14:53:01,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:01,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444360626] [2022-02-18 14:53:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:02,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:02,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444360626] [2022-02-18 14:53:02,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444360626] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:02,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024734182] [2022-02-18 14:53:02,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:53:02,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:02,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:02,133 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) [2022-02-18 14:53:02,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-18 14:53:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:02,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:02,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:02,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:02,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024734182] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:02,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:02,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-18 14:53:02,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21992037] [2022-02-18 14:53:02,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:02,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:53:02,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:53:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:53:02,803 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) [2022-02-18 14:53:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:04,717 INFO L93 Difference]: Finished difference Result 21164 states and 62515 transitions. [2022-02-18 14:53:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-18 14:53:04,718 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 [2022-02-18 14:53:04,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:04,834 INFO L225 Difference]: With dead ends: 21164 [2022-02-18 14:53:04,834 INFO L226 Difference]: Without dead ends: 21128 [2022-02-18 14:53:04,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1680, Invalid=8220, Unknown=0, NotChecked=0, Total=9900 [2022-02-18 14:53:04,835 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 817 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:04,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3435 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:53:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21128 states. [2022-02-18 14:53:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21128 to 16764. [2022-02-18 14:53:05,064 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) [2022-02-18 14:53:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 50210 transitions. [2022-02-18 14:53:05,100 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 50210 transitions. Word has length 77 [2022-02-18 14:53:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:05,100 INFO L470 AbstractCegarLoop]: Abstraction has 16764 states and 50210 transitions. [2022-02-18 14:53:05,100 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) [2022-02-18 14:53:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 50210 transitions. [2022-02-18 14:53:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:05,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:05,123 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] [2022-02-18 14:53:05,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:05,323 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 [2022-02-18 14:53:05,323 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1176482649, now seen corresponding path program 50 times [2022-02-18 14:53:05,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:05,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049527018] [2022-02-18 14:53:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:05,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:05,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049527018] [2022-02-18 14:53:05,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049527018] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:05,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392836802] [2022-02-18 14:53:05,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:53:05,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:05,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:05,450 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) [2022-02-18 14:53:05,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-18 14:53:05,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:53:05,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:05,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:05,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:05,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:06,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392836802] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:06,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:06,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-18 14:53:06,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287218445] [2022-02-18 14:53:06,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:06,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-18 14:53:06,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-18 14:53:06,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-02-18 14:53:06,121 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) [2022-02-18 14:53:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:09,931 INFO L93 Difference]: Finished difference Result 32421 states and 95423 transitions. [2022-02-18 14:53:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-18 14:53:09,931 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 [2022-02-18 14:53:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:10,083 INFO L225 Difference]: With dead ends: 32421 [2022-02-18 14:53:10,084 INFO L226 Difference]: Without dead ends: 32376 [2022-02-18 14:53:10,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5348, Invalid=25804, Unknown=0, NotChecked=0, Total=31152 [2022-02-18 14:53:10,085 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1180 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:10,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 4054 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:53:10,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32376 states. [2022-02-18 14:53:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32376 to 19893. [2022-02-18 14:53:10,478 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) [2022-02-18 14:53:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19893 states to 19893 states and 59698 transitions. [2022-02-18 14:53:10,524 INFO L78 Accepts]: Start accepts. Automaton has 19893 states and 59698 transitions. Word has length 77 [2022-02-18 14:53:10,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:10,524 INFO L470 AbstractCegarLoop]: Abstraction has 19893 states and 59698 transitions. [2022-02-18 14:53:10,524 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) [2022-02-18 14:53:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 19893 states and 59698 transitions. [2022-02-18 14:53:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:10,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:10,553 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] [2022-02-18 14:53:10,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-18 14:53:10,754 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 [2022-02-18 14:53:10,754 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1579600833, now seen corresponding path program 51 times [2022-02-18 14:53:10,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:10,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120584291] [2022-02-18 14:53:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:10,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:10,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:10,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120584291] [2022-02-18 14:53:10,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120584291] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:10,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990753166] [2022-02-18 14:53:10,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:53:10,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:10,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:10,880 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) [2022-02-18 14:53:10,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-18 14:53:10,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-18 14:53:10,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:10,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:53:10,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:11,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:11,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990753166] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:11,541 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:11,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-02-18 14:53:11,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408984829] [2022-02-18 14:53:11,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:11,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:53:11,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:11,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:53:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:53:11,542 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) [2022-02-18 14:53:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:17,566 INFO L93 Difference]: Finished difference Result 36557 states and 108426 transitions. [2022-02-18 14:53:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-02-18 14:53:17,567 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 [2022-02-18 14:53:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:17,640 INFO L225 Difference]: With dead ends: 36557 [2022-02-18 14:53:17,640 INFO L226 Difference]: Without dead ends: 36509 [2022-02-18 14:53:17,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24666 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9606, Invalid=51156, Unknown=0, NotChecked=0, Total=60762 [2022-02-18 14:53:17,643 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 2582 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:17,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 4052 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:53:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36509 states. [2022-02-18 14:53:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36509 to 20333. [2022-02-18 14:53:18,117 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) [2022-02-18 14:53:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20333 states to 20333 states and 60908 transitions. [2022-02-18 14:53:18,161 INFO L78 Accepts]: Start accepts. Automaton has 20333 states and 60908 transitions. Word has length 77 [2022-02-18 14:53:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:18,161 INFO L470 AbstractCegarLoop]: Abstraction has 20333 states and 60908 transitions. [2022-02-18 14:53:18,161 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) [2022-02-18 14:53:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 20333 states and 60908 transitions. [2022-02-18 14:53:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:18,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:18,189 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] [2022-02-18 14:53:18,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:18,390 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 [2022-02-18 14:53:18,390 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:18,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash 73734371, now seen corresponding path program 52 times [2022-02-18 14:53:18,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:18,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204374642] [2022-02-18 14:53:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:18,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:18,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204374642] [2022-02-18 14:53:18,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204374642] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:18,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302490058] [2022-02-18 14:53:18,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:53:18,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:18,524 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) [2022-02-18 14:53:18,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-18 14:53:18,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:53:18,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:18,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:18,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:18,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:19,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302490058] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:19,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:19,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-18 14:53:19,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242929711] [2022-02-18 14:53:19,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:19,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-18 14:53:19,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-18 14:53:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2022-02-18 14:53:19,305 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) [2022-02-18 14:53:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:21,750 INFO L93 Difference]: Finished difference Result 33381 states and 99082 transitions. [2022-02-18 14:53:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-18 14:53:21,751 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 [2022-02-18 14:53:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:21,820 INFO L225 Difference]: With dead ends: 33381 [2022-02-18 14:53:21,821 INFO L226 Difference]: Without dead ends: 33345 [2022-02-18 14:53:21,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4532 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2306, Invalid=11266, Unknown=0, NotChecked=0, Total=13572 [2022-02-18 14:53:21,822 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1230 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:21,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 3216 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:53:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33345 states. [2022-02-18 14:53:22,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33345 to 20209. [2022-02-18 14:53:22,365 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) [2022-02-18 14:53:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20209 states to 20209 states and 60479 transitions. [2022-02-18 14:53:22,408 INFO L78 Accepts]: Start accepts. Automaton has 20209 states and 60479 transitions. Word has length 77 [2022-02-18 14:53:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:22,409 INFO L470 AbstractCegarLoop]: Abstraction has 20209 states and 60479 transitions. [2022-02-18 14:53:22,409 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) [2022-02-18 14:53:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20209 states and 60479 transitions. [2022-02-18 14:53:22,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:22,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:22,436 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] [2022-02-18 14:53:22,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:22,637 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 [2022-02-18 14:53:22,637 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1917390069, now seen corresponding path program 53 times [2022-02-18 14:53:22,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:22,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671815006] [2022-02-18 14:53:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:22,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:22,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:22,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671815006] [2022-02-18 14:53:22,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671815006] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:22,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492880076] [2022-02-18 14:53:22,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:53:22,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:22,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:22,752 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) [2022-02-18 14:53:22,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-18 14:53:22,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-18 14:53:22,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:22,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-18 14:53:22,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:23,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:23,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492880076] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:23,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:23,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-02-18 14:53:23,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441968046] [2022-02-18 14:53:23,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:23,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-18 14:53:23,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:23,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-18 14:53:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-02-18 14:53:23,344 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) [2022-02-18 14:53:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:25,834 INFO L93 Difference]: Finished difference Result 38522 states and 113262 transitions. [2022-02-18 14:53:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-18 14:53:25,834 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 [2022-02-18 14:53:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:25,905 INFO L225 Difference]: With dead ends: 38522 [2022-02-18 14:53:25,906 INFO L226 Difference]: Without dead ends: 38474 [2022-02-18 14:53:25,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5568 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2672, Invalid=13840, Unknown=0, NotChecked=0, Total=16512 [2022-02-18 14:53:25,907 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 1067 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:25,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1067 Valid, 3553 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:53:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states. [2022-02-18 14:53:26,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38474 to 20593. [2022-02-18 14:53:26,399 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) [2022-02-18 14:53:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20593 states to 20593 states and 61707 transitions. [2022-02-18 14:53:26,446 INFO L78 Accepts]: Start accepts. Automaton has 20593 states and 61707 transitions. Word has length 77 [2022-02-18 14:53:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:26,446 INFO L470 AbstractCegarLoop]: Abstraction has 20593 states and 61707 transitions. [2022-02-18 14:53:26,447 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) [2022-02-18 14:53:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 20593 states and 61707 transitions. [2022-02-18 14:53:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:26,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:26,476 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] [2022-02-18 14:53:26,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:26,676 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 [2022-02-18 14:53:26,677 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:26,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1473791071, now seen corresponding path program 54 times [2022-02-18 14:53:26,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:26,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683648500] [2022-02-18 14:53:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:26,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:26,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683648500] [2022-02-18 14:53:26,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683648500] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:26,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556175059] [2022-02-18 14:53:26,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:53:26,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:26,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:26,804 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) [2022-02-18 14:53:26,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-18 14:53:26,893 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:53:26,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:26,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:26,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:27,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:27,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556175059] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:27,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:27,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-18 14:53:27,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503263023] [2022-02-18 14:53:27,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:27,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:53:27,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:53:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:53:27,467 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) [2022-02-18 14:53:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:30,764 INFO L93 Difference]: Finished difference Result 37942 states and 113081 transitions. [2022-02-18 14:53:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-18 14:53:30,765 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 [2022-02-18 14:53:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:30,842 INFO L225 Difference]: With dead ends: 37942 [2022-02-18 14:53:30,842 INFO L226 Difference]: Without dead ends: 37912 [2022-02-18 14:53:30,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7712 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3953, Invalid=18099, Unknown=0, NotChecked=0, Total=22052 [2022-02-18 14:53:30,844 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 989 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:30,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 3199 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:53:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37912 states. [2022-02-18 14:53:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37912 to 27933. [2022-02-18 14:53:31,432 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) [2022-02-18 14:53:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27933 states to 27933 states and 84388 transitions. [2022-02-18 14:53:31,498 INFO L78 Accepts]: Start accepts. Automaton has 27933 states and 84388 transitions. Word has length 77 [2022-02-18 14:53:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:31,498 INFO L470 AbstractCegarLoop]: Abstraction has 27933 states and 84388 transitions. [2022-02-18 14:53:31,498 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) [2022-02-18 14:53:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 27933 states and 84388 transitions. [2022-02-18 14:53:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:31,541 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:31,541 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] [2022-02-18 14:53:31,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-18 14:53:31,741 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 [2022-02-18 14:53:31,741 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:31,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash -65092743, now seen corresponding path program 55 times [2022-02-18 14:53:31,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:31,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553059613] [2022-02-18 14:53:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:31,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:31,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:31,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553059613] [2022-02-18 14:53:31,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553059613] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:31,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089952215] [2022-02-18 14:53:31,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:53:31,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:31,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:31,876 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) [2022-02-18 14:53:31,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-18 14:53:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:31,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:31,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:32,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:32,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089952215] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:32,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:32,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-18 14:53:32,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272091355] [2022-02-18 14:53:32,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:32,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:53:32,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:53:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:53:32,655 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) [2022-02-18 14:53:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:34,612 INFO L93 Difference]: Finished difference Result 35041 states and 104489 transitions. [2022-02-18 14:53:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-18 14:53:34,612 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 [2022-02-18 14:53:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:34,685 INFO L225 Difference]: With dead ends: 35041 [2022-02-18 14:53:34,685 INFO L226 Difference]: Without dead ends: 34945 [2022-02-18 14:53:34,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1987, Invalid=9143, Unknown=0, NotChecked=0, Total=11130 [2022-02-18 14:53:34,687 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1138 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:34,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 2399 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:53:34,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34945 states. [2022-02-18 14:53:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34945 to 24729. [2022-02-18 14:53:35,252 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) [2022-02-18 14:53:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24729 states to 24729 states and 74481 transitions. [2022-02-18 14:53:35,311 INFO L78 Accepts]: Start accepts. Automaton has 24729 states and 74481 transitions. Word has length 77 [2022-02-18 14:53:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:35,311 INFO L470 AbstractCegarLoop]: Abstraction has 24729 states and 74481 transitions. [2022-02-18 14:53:35,311 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) [2022-02-18 14:53:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 24729 states and 74481 transitions. [2022-02-18 14:53:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:35,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:35,345 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] [2022-02-18 14:53:35,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-18 14:53:35,546 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 [2022-02-18 14:53:35,546 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1921033311, now seen corresponding path program 56 times [2022-02-18 14:53:35,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:35,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486257908] [2022-02-18 14:53:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:35,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:35,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486257908] [2022-02-18 14:53:35,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486257908] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:35,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235087145] [2022-02-18 14:53:35,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:53:35,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:35,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:35,669 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) [2022-02-18 14:53:35,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-18 14:53:35,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:53:35,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:35,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:35,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:36,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:36,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235087145] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:36,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:36,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-18 14:53:36,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679109927] [2022-02-18 14:53:36,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:36,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:53:36,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:53:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:53:36,470 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) [2022-02-18 14:53:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:38,048 INFO L93 Difference]: Finished difference Result 29827 states and 89157 transitions. [2022-02-18 14:53:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-18 14:53:38,048 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 [2022-02-18 14:53:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:38,114 INFO L225 Difference]: With dead ends: 29827 [2022-02-18 14:53:38,114 INFO L226 Difference]: Without dead ends: 29755 [2022-02-18 14:53:38,115 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 [2022-02-18 14:53:38,116 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 764 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:38,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 2785 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:53:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29755 states. [2022-02-18 14:53:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29755 to 24853. [2022-02-18 14:53:38,597 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) [2022-02-18 14:53:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24853 states to 24853 states and 74834 transitions. [2022-02-18 14:53:38,653 INFO L78 Accepts]: Start accepts. Automaton has 24853 states and 74834 transitions. Word has length 77 [2022-02-18 14:53:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:38,654 INFO L470 AbstractCegarLoop]: Abstraction has 24853 states and 74834 transitions. [2022-02-18 14:53:38,654 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) [2022-02-18 14:53:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 24853 states and 74834 transitions. [2022-02-18 14:53:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:38,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:38,691 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] [2022-02-18 14:53:38,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-18 14:53:38,892 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 [2022-02-18 14:53:38,892 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash 817466599, now seen corresponding path program 57 times [2022-02-18 14:53:38,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:38,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373982747] [2022-02-18 14:53:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:39,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:39,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373982747] [2022-02-18 14:53:39,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373982747] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:39,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414898303] [2022-02-18 14:53:39,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:53:39,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:39,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:39,006 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) [2022-02-18 14:53:39,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-18 14:53:39,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-18 14:53:39,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:39,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:53:39,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:39,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:39,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414898303] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:39,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:39,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-02-18 14:53:39,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576850781] [2022-02-18 14:53:39,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:39,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-18 14:53:39,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-18 14:53:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-02-18 14:53:39,666 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) [2022-02-18 14:53:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:44,343 INFO L93 Difference]: Finished difference Result 43877 states and 130351 transitions. [2022-02-18 14:53:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-02-18 14:53:44,343 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 [2022-02-18 14:53:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:44,439 INFO L225 Difference]: With dead ends: 43877 [2022-02-18 14:53:44,439 INFO L226 Difference]: Without dead ends: 43787 [2022-02-18 14:53:44,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17610 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9170, Invalid=35562, Unknown=0, NotChecked=0, Total=44732 [2022-02-18 14:53:44,443 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1903 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:44,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 3065 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:53:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43787 states. [2022-02-18 14:53:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43787 to 26781. [2022-02-18 14:53:45,080 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) [2022-02-18 14:53:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26781 states to 26781 states and 80392 transitions. [2022-02-18 14:53:45,145 INFO L78 Accepts]: Start accepts. Automaton has 26781 states and 80392 transitions. Word has length 77 [2022-02-18 14:53:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:45,145 INFO L470 AbstractCegarLoop]: Abstraction has 26781 states and 80392 transitions. [2022-02-18 14:53:45,145 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) [2022-02-18 14:53:45,145 INFO L276 IsEmpty]: Start isEmpty. Operand 26781 states and 80392 transitions. [2022-02-18 14:53:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:45,187 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:45,187 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] [2022-02-18 14:53:45,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-18 14:53:45,396 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 [2022-02-18 14:53:45,396 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:45,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash -721417215, now seen corresponding path program 58 times [2022-02-18 14:53:45,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:45,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830970109] [2022-02-18 14:53:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:45,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:45,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:45,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830970109] [2022-02-18 14:53:45,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830970109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:45,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148325724] [2022-02-18 14:53:45,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:53:45,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:45,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:45,512 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) [2022-02-18 14:53:45,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-18 14:53:45,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:53:45,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:45,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:45,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:45,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:46,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148325724] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:46,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:46,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-18 14:53:46,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688526371] [2022-02-18 14:53:46,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:46,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:53:46,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:53:46,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:53:46,259 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) [2022-02-18 14:53:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:48,318 INFO L93 Difference]: Finished difference Result 40700 states and 121546 transitions. [2022-02-18 14:53:48,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-18 14:53:48,319 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 [2022-02-18 14:53:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:48,411 INFO L225 Difference]: With dead ends: 40700 [2022-02-18 14:53:48,411 INFO L226 Difference]: Without dead ends: 40628 [2022-02-18 14:53:48,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2453, Invalid=9319, Unknown=0, NotChecked=0, Total=11772 [2022-02-18 14:53:48,413 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1129 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:48,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2221 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:53:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40628 states. [2022-02-18 14:53:49,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40628 to 26557. [2022-02-18 14:53:49,099 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) [2022-02-18 14:53:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 79816 transitions. [2022-02-18 14:53:49,167 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 79816 transitions. Word has length 77 [2022-02-18 14:53:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:49,167 INFO L470 AbstractCegarLoop]: Abstraction has 26557 states and 79816 transitions. [2022-02-18 14:53:49,167 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) [2022-02-18 14:53:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 79816 transitions. [2022-02-18 14:53:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:49,213 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:49,213 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] [2022-02-18 14:53:49,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-18 14:53:49,414 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 [2022-02-18 14:53:49,414 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2067683619, now seen corresponding path program 59 times [2022-02-18 14:53:49,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:49,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143258453] [2022-02-18 14:53:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:49,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:49,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143258453] [2022-02-18 14:53:49,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143258453] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:49,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549398228] [2022-02-18 14:53:49,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:53:49,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:49,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:49,541 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) [2022-02-18 14:53:49,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-18 14:53:49,633 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 14:53:49,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:49,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-18 14:53:49,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:49,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:50,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549398228] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:50,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:50,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-18 14:53:50,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711131437] [2022-02-18 14:53:50,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:50,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-18 14:53:50,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-18 14:53:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-02-18 14:53:50,180 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) [2022-02-18 14:53:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:53,138 INFO L93 Difference]: Finished difference Result 49127 states and 146632 transitions. [2022-02-18 14:53:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-18 14:53:53,138 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 [2022-02-18 14:53:53,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:53,248 INFO L225 Difference]: With dead ends: 49127 [2022-02-18 14:53:53,248 INFO L226 Difference]: Without dead ends: 49055 [2022-02-18 14:53:53,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7621 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3626, Invalid=17544, Unknown=0, NotChecked=0, Total=21170 [2022-02-18 14:53:53,251 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1109 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:53,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2200 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:53:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49055 states. [2022-02-18 14:53:53,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49055 to 29053. [2022-02-18 14:53:54,013 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) [2022-02-18 14:53:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29053 states to 29053 states and 87560 transitions. [2022-02-18 14:53:54,084 INFO L78 Accepts]: Start accepts. Automaton has 29053 states and 87560 transitions. Word has length 77 [2022-02-18 14:53:54,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:54,084 INFO L470 AbstractCegarLoop]: Abstraction has 29053 states and 87560 transitions. [2022-02-18 14:53:54,084 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) [2022-02-18 14:53:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 29053 states and 87560 transitions. [2022-02-18 14:53:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:54,130 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:54,130 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] [2022-02-18 14:53:54,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-18 14:53:54,331 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 [2022-02-18 14:53:54,332 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:54,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1768261465, now seen corresponding path program 60 times [2022-02-18 14:53:54,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:54,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894907397] [2022-02-18 14:53:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:54,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:54,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894907397] [2022-02-18 14:53:54,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894907397] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:54,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736167092] [2022-02-18 14:53:54,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:53:54,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:54,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:54,457 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) [2022-02-18 14:53:54,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-18 14:53:54,537 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:53:54,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:54,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:53:54,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:54,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:55,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736167092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:55,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:55,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-02-18 14:53:55,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053425778] [2022-02-18 14:53:55,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:55,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-18 14:53:55,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-18 14:53:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2022-02-18 14:53:55,170 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) [2022-02-18 14:53:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:58,018 INFO L93 Difference]: Finished difference Result 47531 states and 141242 transitions. [2022-02-18 14:53:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-18 14:53:58,018 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 [2022-02-18 14:53:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:58,152 INFO L225 Difference]: With dead ends: 47531 [2022-02-18 14:53:58,153 INFO L226 Difference]: Without dead ends: 47366 [2022-02-18 14:53:58,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5531 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2843, Invalid=14187, Unknown=0, NotChecked=0, Total=17030 [2022-02-18 14:53:58,154 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 892 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:58,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 3699 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:53:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47366 states. [2022-02-18 14:53:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47366 to 32281. [2022-02-18 14:53:59,008 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) [2022-02-18 14:53:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32281 states to 32281 states and 96861 transitions. [2022-02-18 14:53:59,097 INFO L78 Accepts]: Start accepts. Automaton has 32281 states and 96861 transitions. Word has length 77 [2022-02-18 14:53:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:59,097 INFO L470 AbstractCegarLoop]: Abstraction has 32281 states and 96861 transitions. [2022-02-18 14:53:59,098 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) [2022-02-18 14:53:59,098 INFO L276 IsEmpty]: Start isEmpty. Operand 32281 states and 96861 transitions. [2022-02-18 14:53:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:53:59,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:59,152 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] [2022-02-18 14:53:59,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:59,353 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 [2022-02-18 14:53:59,354 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 157467359, now seen corresponding path program 61 times [2022-02-18 14:53:59,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:59,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366713142] [2022-02-18 14:53:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:59,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:59,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366713142] [2022-02-18 14:53:59,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366713142] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:59,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188313682] [2022-02-18 14:53:59,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:53:59,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:59,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:59,495 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) [2022-02-18 14:53:59,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-18 14:53:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:59,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-18 14:53:59,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:59,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:00,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188313682] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:00,302 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:00,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 31 [2022-02-18 14:54:00,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587452521] [2022-02-18 14:54:00,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:00,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:54:00,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:00,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:54:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:54:00,303 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) [2022-02-18 14:54:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:01,326 INFO L93 Difference]: Finished difference Result 36443 states and 108951 transitions. [2022-02-18 14:54:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-18 14:54:01,326 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 [2022-02-18 14:54:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:01,401 INFO L225 Difference]: With dead ends: 36443 [2022-02-18 14:54:01,401 INFO L226 Difference]: Without dead ends: 36371 [2022-02-18 14:54:01,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=813, Invalid=3879, Unknown=0, NotChecked=0, Total=4692 [2022-02-18 14:54:01,402 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 656 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:01,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1751 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:54:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2022-02-18 14:54:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 32553. [2022-02-18 14:54:02,078 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) [2022-02-18 14:54:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32553 states to 32553 states and 97621 transitions. [2022-02-18 14:54:02,161 INFO L78 Accepts]: Start accepts. Automaton has 32553 states and 97621 transitions. Word has length 77 [2022-02-18 14:54:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:02,161 INFO L470 AbstractCegarLoop]: Abstraction has 32553 states and 97621 transitions. [2022-02-18 14:54:02,161 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) [2022-02-18 14:54:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 32553 states and 97621 transitions. [2022-02-18 14:54:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:02,210 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:02,211 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] [2022-02-18 14:54:02,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-18 14:54:02,411 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 [2022-02-18 14:54:02,411 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:02,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:02,412 INFO L85 PathProgramCache]: Analyzing trace with hash 304117667, now seen corresponding path program 62 times [2022-02-18 14:54:02,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:02,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183436633] [2022-02-18 14:54:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:02,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:02,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:02,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183436633] [2022-02-18 14:54:02,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183436633] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:02,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304737430] [2022-02-18 14:54:02,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:54:02,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:02,512 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) [2022-02-18 14:54:02,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-18 14:54:02,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:54:02,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:02,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:02,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:02,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:03,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304737430] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:03,137 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:03,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-18 14:54:03,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142446462] [2022-02-18 14:54:03,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:03,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:54:03,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:54:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:54:03,139 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) [2022-02-18 14:54:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:04,662 INFO L93 Difference]: Finished difference Result 46148 states and 138061 transitions. [2022-02-18 14:54:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-18 14:54:04,663 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 [2022-02-18 14:54:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:04,888 INFO L225 Difference]: With dead ends: 46148 [2022-02-18 14:54:04,888 INFO L226 Difference]: Without dead ends: 46076 [2022-02-18 14:54:04,888 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 [2022-02-18 14:54:04,889 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 886 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:04,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 1967 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:54:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2022-02-18 14:54:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 33461. [2022-02-18 14:54:05,643 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) [2022-02-18 14:54:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 100790 transitions. [2022-02-18 14:54:05,727 INFO L78 Accepts]: Start accepts. Automaton has 33461 states and 100790 transitions. Word has length 77 [2022-02-18 14:54:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:05,727 INFO L470 AbstractCegarLoop]: Abstraction has 33461 states and 100790 transitions. [2022-02-18 14:54:05,727 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) [2022-02-18 14:54:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 33461 states and 100790 transitions. [2022-02-18 14:54:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:05,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:05,778 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] [2022-02-18 14:54:05,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-18 14:54:05,978 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 [2022-02-18 14:54:05,979 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:05,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2147193931, now seen corresponding path program 63 times [2022-02-18 14:54:05,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:06,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812117209] [2022-02-18 14:54:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:06,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:06,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:06,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812117209] [2022-02-18 14:54:06,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812117209] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:06,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710119634] [2022-02-18 14:54:06,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:54:06,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:06,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:06,203 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) [2022-02-18 14:54:06,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-18 14:54:06,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-18 14:54:06,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:06,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:06,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:06,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:06,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710119634] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:06,877 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:06,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2022-02-18 14:54:06,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071596993] [2022-02-18 14:54:06,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:06,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:54:06,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:54:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:54:06,879 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) [2022-02-18 14:54:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:09,075 INFO L93 Difference]: Finished difference Result 45082 states and 134091 transitions. [2022-02-18 14:54:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-18 14:54:09,076 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 [2022-02-18 14:54:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:09,174 INFO L225 Difference]: With dead ends: 45082 [2022-02-18 14:54:09,175 INFO L226 Difference]: Without dead ends: 44986 [2022-02-18 14:54:09,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4182 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2256, Invalid=10854, Unknown=0, NotChecked=0, Total=13110 [2022-02-18 14:54:09,176 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 873 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:09,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2698 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:54:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44986 states. [2022-02-18 14:54:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44986 to 33505. [2022-02-18 14:54:09,890 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) [2022-02-18 14:54:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33505 states to 33505 states and 100895 transitions. [2022-02-18 14:54:09,983 INFO L78 Accepts]: Start accepts. Automaton has 33505 states and 100895 transitions. Word has length 77 [2022-02-18 14:54:09,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:09,983 INFO L470 AbstractCegarLoop]: Abstraction has 33505 states and 100895 transitions. [2022-02-18 14:54:09,984 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) [2022-02-18 14:54:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 33505 states and 100895 transitions. [2022-02-18 14:54:10,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:10,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:10,039 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] [2022-02-18 14:54:10,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-18 14:54:10,239 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 [2022-02-18 14:54:10,239 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2048811427, now seen corresponding path program 64 times [2022-02-18 14:54:10,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:10,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084611587] [2022-02-18 14:54:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:10,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:10,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:10,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084611587] [2022-02-18 14:54:10,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084611587] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:10,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331165703] [2022-02-18 14:54:10,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:54:10,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:10,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:10,386 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) [2022-02-18 14:54:10,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-18 14:54:10,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:54:10,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:10,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:54:10,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:10,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:11,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331165703] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:11,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:11,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2022-02-18 14:54:11,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220463344] [2022-02-18 14:54:11,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:11,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 14:54:11,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 14:54:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 14:54:11,331 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) [2022-02-18 14:54:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:13,947 INFO L93 Difference]: Finished difference Result 58794 states and 174283 transitions. [2022-02-18 14:54:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-18 14:54:13,947 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 [2022-02-18 14:54:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:14,076 INFO L225 Difference]: With dead ends: 58794 [2022-02-18 14:54:14,076 INFO L226 Difference]: Without dead ends: 58614 [2022-02-18 14:54:14,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6726 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3346, Invalid=15560, Unknown=0, NotChecked=0, Total=18906 [2022-02-18 14:54:14,077 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1121 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:14,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3386 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:54:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58614 states. [2022-02-18 14:54:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58614 to 41717. [2022-02-18 14:54:15,153 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) [2022-02-18 14:54:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41717 states to 41717 states and 125350 transitions. [2022-02-18 14:54:15,258 INFO L78 Accepts]: Start accepts. Automaton has 41717 states and 125350 transitions. Word has length 77 [2022-02-18 14:54:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:15,258 INFO L470 AbstractCegarLoop]: Abstraction has 41717 states and 125350 transitions. [2022-02-18 14:54:15,258 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) [2022-02-18 14:54:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 41717 states and 125350 transitions. [2022-02-18 14:54:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:15,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:15,481 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] [2022-02-18 14:54:15,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:15,699 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 [2022-02-18 14:54:15,699 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1711934855, now seen corresponding path program 65 times [2022-02-18 14:54:15,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:15,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318319025] [2022-02-18 14:54:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:15,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:15,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:15,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318319025] [2022-02-18 14:54:15,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318319025] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:15,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183020462] [2022-02-18 14:54:15,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:54:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:15,823 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) [2022-02-18 14:54:15,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-18 14:54:15,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-18 14:54:15,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:15,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:15,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:16,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:16,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183020462] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:16,511 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:16,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2022-02-18 14:54:16,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361009936] [2022-02-18 14:54:16,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:16,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:54:16,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:16,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:54:16,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:54:16,512 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) [2022-02-18 14:54:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:18,772 INFO L93 Difference]: Finished difference Result 55045 states and 162992 transitions. [2022-02-18 14:54:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-18 14:54:18,773 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 [2022-02-18 14:54:18,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:18,895 INFO L225 Difference]: With dead ends: 55045 [2022-02-18 14:54:18,896 INFO L226 Difference]: Without dead ends: 54949 [2022-02-18 14:54:18,896 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 [2022-02-18 14:54:18,896 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 976 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:18,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2420 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:54:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54949 states. [2022-02-18 14:54:19,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54949 to 40477. [2022-02-18 14:54:19,768 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) [2022-02-18 14:54:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40477 states to 40477 states and 121596 transitions. [2022-02-18 14:54:19,878 INFO L78 Accepts]: Start accepts. Automaton has 40477 states and 121596 transitions. Word has length 77 [2022-02-18 14:54:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:19,878 INFO L470 AbstractCegarLoop]: Abstraction has 40477 states and 121596 transitions. [2022-02-18 14:54:19,878 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) [2022-02-18 14:54:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 40477 states and 121596 transitions. [2022-02-18 14:54:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:19,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:19,942 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] [2022-02-18 14:54:19,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-18 14:54:20,143 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 [2022-02-18 14:54:20,143 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash 921558363, now seen corresponding path program 66 times [2022-02-18 14:54:20,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:20,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140675432] [2022-02-18 14:54:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:20,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:20,264 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:20,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140675432] [2022-02-18 14:54:20,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140675432] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:20,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675088533] [2022-02-18 14:54:20,265 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:54:20,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:20,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:20,266 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) [2022-02-18 14:54:20,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-18 14:54:20,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 14:54:20,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:20,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:20,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:20,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:21,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675088533] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:21,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:21,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-02-18 14:54:21,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567567] [2022-02-18 14:54:21,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:21,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:54:21,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:21,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:54:21,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:54:21,127 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) [2022-02-18 14:54:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:22,916 INFO L93 Difference]: Finished difference Result 53143 states and 159305 transitions. [2022-02-18 14:54:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-18 14:54:22,917 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 [2022-02-18 14:54:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:23,107 INFO L225 Difference]: With dead ends: 53143 [2022-02-18 14:54:23,107 INFO L226 Difference]: Without dead ends: 52963 [2022-02-18 14:54:23,107 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 [2022-02-18 14:54:23,108 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 532 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:23,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2799 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:54:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52963 states. [2022-02-18 14:54:24,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52963 to 46293. [2022-02-18 14:54:24,090 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) [2022-02-18 14:54:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46293 states to 46293 states and 139386 transitions. [2022-02-18 14:54:24,219 INFO L78 Accepts]: Start accepts. Automaton has 46293 states and 139386 transitions. Word has length 77 [2022-02-18 14:54:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:24,220 INFO L470 AbstractCegarLoop]: Abstraction has 46293 states and 139386 transitions. [2022-02-18 14:54:24,220 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) [2022-02-18 14:54:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 46293 states and 139386 transitions. [2022-02-18 14:54:24,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:24,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:24,288 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] [2022-02-18 14:54:24,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:24,489 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 [2022-02-18 14:54:24,489 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash 265233891, now seen corresponding path program 67 times [2022-02-18 14:54:24,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:24,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109123345] [2022-02-18 14:54:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:24,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:24,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109123345] [2022-02-18 14:54:24,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109123345] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:24,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621144079] [2022-02-18 14:54:24,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:54:24,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:24,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:24,611 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) [2022-02-18 14:54:24,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-18 14:54:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:24,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:24,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:25,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:25,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621144079] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:25,383 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:25,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-18 14:54:25,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567370473] [2022-02-18 14:54:25,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:25,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:54:25,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:25,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:54:25,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:54:25,384 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) [2022-02-18 14:54:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:27,322 INFO L93 Difference]: Finished difference Result 58970 states and 176096 transitions. [2022-02-18 14:54:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-18 14:54:27,322 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 [2022-02-18 14:54:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:27,553 INFO L225 Difference]: With dead ends: 58970 [2022-02-18 14:54:27,553 INFO L226 Difference]: Without dead ends: 58874 [2022-02-18 14:54:27,554 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 [2022-02-18 14:54:27,554 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 763 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:27,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 2375 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:54:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58874 states. [2022-02-18 14:54:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58874 to 49917. [2022-02-18 14:54:28,513 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) [2022-02-18 14:54:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49917 states to 49917 states and 150792 transitions. [2022-02-18 14:54:28,830 INFO L78 Accepts]: Start accepts. Automaton has 49917 states and 150792 transitions. Word has length 77 [2022-02-18 14:54:28,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:28,830 INFO L470 AbstractCegarLoop]: Abstraction has 49917 states and 150792 transitions. [2022-02-18 14:54:28,830 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) [2022-02-18 14:54:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 49917 states and 150792 transitions. [2022-02-18 14:54:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:28,902 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:28,903 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] [2022-02-18 14:54:28,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-18 14:54:29,103 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 [2022-02-18 14:54:29,104 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:29,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2108889589, now seen corresponding path program 68 times [2022-02-18 14:54:29,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:29,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993943235] [2022-02-18 14:54:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:29,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:29,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:29,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993943235] [2022-02-18 14:54:29,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993943235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:29,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030908133] [2022-02-18 14:54:29,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:54:29,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:29,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:29,214 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) [2022-02-18 14:54:29,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-18 14:54:29,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:54:29,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:29,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:29,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:29,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:29,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030908133] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:29,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:29,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-18 14:54:29,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677897222] [2022-02-18 14:54:29,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:29,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:54:29,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:54:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:54:29,837 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) [2022-02-18 14:54:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:31,150 INFO L93 Difference]: Finished difference Result 52965 states and 159059 transitions. [2022-02-18 14:54:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-18 14:54:31,151 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 [2022-02-18 14:54:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:31,401 INFO L225 Difference]: With dead ends: 52965 [2022-02-18 14:54:31,402 INFO L226 Difference]: Without dead ends: 52845 [2022-02-18 14:54:31,402 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 [2022-02-18 14:54:31,402 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 625 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:31,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 1858 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:54:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52845 states. [2022-02-18 14:54:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52845 to 50573. [2022-02-18 14:54:32,418 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) [2022-02-18 14:54:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50573 states to 50573 states and 152752 transitions. [2022-02-18 14:54:32,554 INFO L78 Accepts]: Start accepts. Automaton has 50573 states and 152752 transitions. Word has length 77 [2022-02-18 14:54:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:32,555 INFO L470 AbstractCegarLoop]: Abstraction has 50573 states and 152752 transitions. [2022-02-18 14:54:32,555 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) [2022-02-18 14:54:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 50573 states and 152752 transitions. [2022-02-18 14:54:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:32,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:32,887 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] [2022-02-18 14:54:32,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:33,103 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 [2022-02-18 14:54:33,103 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1704232665, now seen corresponding path program 69 times [2022-02-18 14:54:33,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:33,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748607560] [2022-02-18 14:54:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:33,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:33,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:33,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748607560] [2022-02-18 14:54:33,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748607560] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:33,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278505929] [2022-02-18 14:54:33,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:54:33,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:33,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:33,236 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) [2022-02-18 14:54:33,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-18 14:54:33,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:54:33,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:33,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-18 14:54:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:33,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:33,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278505929] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:33,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:33,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 32 [2022-02-18 14:54:33,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948769222] [2022-02-18 14:54:33,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:33,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:54:33,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:54:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:54:33,859 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) [2022-02-18 14:54:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:36,105 INFO L93 Difference]: Finished difference Result 55679 states and 167021 transitions. [2022-02-18 14:54:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-18 14:54:36,105 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 [2022-02-18 14:54:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:36,325 INFO L225 Difference]: With dead ends: 55679 [2022-02-18 14:54:36,325 INFO L226 Difference]: Without dead ends: 55619 [2022-02-18 14:54:36,326 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 [2022-02-18 14:54:36,326 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 696 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:36,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2830 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:54:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55619 states. [2022-02-18 14:54:37,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55619 to 52498. [2022-02-18 14:54:37,313 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) [2022-02-18 14:54:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52498 states to 52498 states and 158782 transitions. [2022-02-18 14:54:37,451 INFO L78 Accepts]: Start accepts. Automaton has 52498 states and 158782 transitions. Word has length 77 [2022-02-18 14:54:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:37,451 INFO L470 AbstractCegarLoop]: Abstraction has 52498 states and 158782 transitions. [2022-02-18 14:54:37,451 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) [2022-02-18 14:54:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 52498 states and 158782 transitions. [2022-02-18 14:54:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:37,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:37,549 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] [2022-02-18 14:54:37,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-18 14:54:37,757 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 [2022-02-18 14:54:37,757 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1979648995, now seen corresponding path program 70 times [2022-02-18 14:54:37,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:37,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493536726] [2022-02-18 14:54:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:37,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:38,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:38,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493536726] [2022-02-18 14:54:38,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493536726] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:38,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679931256] [2022-02-18 14:54:38,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:54:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:38,155 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) [2022-02-18 14:54:38,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-18 14:54:38,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:54:38,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:38,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:54:38,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:38,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:54:38,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679931256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:38,882 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:38,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-18 14:54:38,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728332394] [2022-02-18 14:54:38,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:38,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-18 14:54:38,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-18 14:54:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2022-02-18 14:54:38,883 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) [2022-02-18 14:54:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:41,024 INFO L93 Difference]: Finished difference Result 56930 states and 170437 transitions. [2022-02-18 14:54:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-18 14:54:41,024 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 [2022-02-18 14:54:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:41,154 INFO L225 Difference]: With dead ends: 56930 [2022-02-18 14:54:41,154 INFO L226 Difference]: Without dead ends: 56720 [2022-02-18 14:54:41,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2363, Invalid=9847, Unknown=0, NotChecked=0, Total=12210 [2022-02-18 14:54:41,155 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 809 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:41,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2513 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:54:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56720 states. [2022-02-18 14:54:42,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56720 to 50461. [2022-02-18 14:54:42,187 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) [2022-02-18 14:54:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50461 states to 50461 states and 152480 transitions. [2022-02-18 14:54:42,472 INFO L78 Accepts]: Start accepts. Automaton has 50461 states and 152480 transitions. Word has length 77 [2022-02-18 14:54:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:42,472 INFO L470 AbstractCegarLoop]: Abstraction has 50461 states and 152480 transitions. [2022-02-18 14:54:42,472 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) [2022-02-18 14:54:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 50461 states and 152480 transitions. [2022-02-18 14:54:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:42,554 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:42,554 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] [2022-02-18 14:54:42,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:42,754 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 [2022-02-18 14:54:42,754 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1781097287, now seen corresponding path program 71 times [2022-02-18 14:54:42,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:42,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179060177] [2022-02-18 14:54:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:42,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:42,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179060177] [2022-02-18 14:54:42,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179060177] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:42,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659170418] [2022-02-18 14:54:42,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:54:42,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:42,869 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) [2022-02-18 14:54:42,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-18 14:54:42,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 14:54:42,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:42,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-18 14:54:42,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:43,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:43,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659170418] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:43,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:43,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-02-18 14:54:43,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955785042] [2022-02-18 14:54:43,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:43,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:54:43,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:54:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:54:43,585 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) [2022-02-18 14:54:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:44,927 INFO L93 Difference]: Finished difference Result 65246 states and 194541 transitions. [2022-02-18 14:54:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-18 14:54:44,927 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 [2022-02-18 14:54:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:45,080 INFO L225 Difference]: With dead ends: 65246 [2022-02-18 14:54:45,080 INFO L226 Difference]: Without dead ends: 65198 [2022-02-18 14:54:45,081 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 [2022-02-18 14:54:45,081 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 622 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:45,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 1878 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:54:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65198 states. [2022-02-18 14:54:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65198 to 50125. [2022-02-18 14:54:46,344 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) [2022-02-18 14:54:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50125 states to 50125 states and 151476 transitions. [2022-02-18 14:54:46,481 INFO L78 Accepts]: Start accepts. Automaton has 50125 states and 151476 transitions. Word has length 77 [2022-02-18 14:54:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:46,481 INFO L470 AbstractCegarLoop]: Abstraction has 50125 states and 151476 transitions. [2022-02-18 14:54:46,482 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) [2022-02-18 14:54:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 50125 states and 151476 transitions. [2022-02-18 14:54:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:46,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:46,565 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] [2022-02-18 14:54:46,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-18 14:54:46,765 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 [2022-02-18 14:54:46,765 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash -401938913, now seen corresponding path program 72 times [2022-02-18 14:54:46,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:46,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546730639] [2022-02-18 14:54:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:46,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:46,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546730639] [2022-02-18 14:54:46,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546730639] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:46,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292272391] [2022-02-18 14:54:46,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:54:46,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:46,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:46,880 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) [2022-02-18 14:54:46,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-18 14:54:46,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:54:46,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:46,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:46,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:47,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:54:47,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292272391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:47,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:47,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-02-18 14:54:47,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709656640] [2022-02-18 14:54:47,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:47,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:54:47,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:47,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:54:47,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:54:47,847 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) [2022-02-18 14:54:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:49,624 INFO L93 Difference]: Finished difference Result 55334 states and 166142 transitions. [2022-02-18 14:54:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-18 14:54:49,625 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 [2022-02-18 14:54:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:49,752 INFO L225 Difference]: With dead ends: 55334 [2022-02-18 14:54:49,753 INFO L226 Difference]: Without dead ends: 55304 [2022-02-18 14:54:49,753 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 [2022-02-18 14:54:49,753 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 590 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:49,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 2009 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:54:49,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55304 states. [2022-02-18 14:54:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55304 to 52449. [2022-02-18 14:54:50,791 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) [2022-02-18 14:54:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52449 states to 52449 states and 158567 transitions. [2022-02-18 14:54:50,930 INFO L78 Accepts]: Start accepts. Automaton has 52449 states and 158567 transitions. Word has length 77 [2022-02-18 14:54:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:50,930 INFO L470 AbstractCegarLoop]: Abstraction has 52449 states and 158567 transitions. [2022-02-18 14:54:50,930 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) [2022-02-18 14:54:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 52449 states and 158567 transitions. [2022-02-18 14:54:51,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:51,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:51,020 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] [2022-02-18 14:54:51,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-18 14:54:51,220 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 [2022-02-18 14:54:51,221 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1940822727, now seen corresponding path program 73 times [2022-02-18 14:54:51,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:51,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894274357] [2022-02-18 14:54:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:51,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:51,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:51,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894274357] [2022-02-18 14:54:51,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894274357] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:51,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293271735] [2022-02-18 14:54:51,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:54:51,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:51,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:51,335 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) [2022-02-18 14:54:51,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-18 14:54:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:51,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:51,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:51,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:52,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293271735] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:52,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:52,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-02-18 14:54:52,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918776013] [2022-02-18 14:54:52,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:52,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:54:52,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:52,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:54:52,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:54:52,207 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) [2022-02-18 14:54:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:53,718 INFO L93 Difference]: Finished difference Result 55071 states and 165362 transitions. [2022-02-18 14:54:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-18 14:54:53,718 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 [2022-02-18 14:54:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:53,835 INFO L225 Difference]: With dead ends: 55071 [2022-02-18 14:54:53,836 INFO L226 Difference]: Without dead ends: 54987 [2022-02-18 14:54:53,836 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 [2022-02-18 14:54:53,836 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 562 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:53,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 2132 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:54:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54987 states. [2022-02-18 14:54:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54987 to 51673. [2022-02-18 14:54:54,868 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) [2022-02-18 14:54:55,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51673 states to 51673 states and 156173 transitions. [2022-02-18 14:54:55,009 INFO L78 Accepts]: Start accepts. Automaton has 51673 states and 156173 transitions. Word has length 77 [2022-02-18 14:54:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:55,009 INFO L470 AbstractCegarLoop]: Abstraction has 51673 states and 156173 transitions. [2022-02-18 14:54:55,009 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) [2022-02-18 14:54:55,009 INFO L276 IsEmpty]: Start isEmpty. Operand 51673 states and 156173 transitions. [2022-02-18 14:54:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:55,102 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:55,102 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] [2022-02-18 14:54:55,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-18 14:54:55,303 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 [2022-02-18 14:54:55,303 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash 848278107, now seen corresponding path program 74 times [2022-02-18 14:54:55,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:55,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014882148] [2022-02-18 14:54:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:55,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:55,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014882148] [2022-02-18 14:54:55,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014882148] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:55,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820472703] [2022-02-18 14:54:55,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:54:55,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:55,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:55,430 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) [2022-02-18 14:54:55,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-18 14:54:55,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:54:55,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:55,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:54:55,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:55,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:56,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820472703] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:56,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:56,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-02-18 14:54:56,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671618388] [2022-02-18 14:54:56,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:56,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:54:56,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:54:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:54:56,382 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) [2022-02-18 14:54:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:57,679 INFO L93 Difference]: Finished difference Result 54055 states and 162652 transitions. [2022-02-18 14:54:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-18 14:54:57,680 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 [2022-02-18 14:54:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:58,028 INFO L225 Difference]: With dead ends: 54055 [2022-02-18 14:54:58,028 INFO L226 Difference]: Without dead ends: 53947 [2022-02-18 14:54:58,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=804, Invalid=4598, Unknown=0, NotChecked=0, Total=5402 [2022-02-18 14:54:58,029 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 434 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:58,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 2434 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:54:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53947 states. [2022-02-18 14:54:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53947 to 51757. [2022-02-18 14:54:59,095 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) [2022-02-18 14:54:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51757 states to 51757 states and 156432 transitions. [2022-02-18 14:54:59,439 INFO L78 Accepts]: Start accepts. Automaton has 51757 states and 156432 transitions. Word has length 77 [2022-02-18 14:54:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:59,440 INFO L470 AbstractCegarLoop]: Abstraction has 51757 states and 156432 transitions. [2022-02-18 14:54:59,440 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) [2022-02-18 14:54:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 51757 states and 156432 transitions. [2022-02-18 14:54:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:54:59,522 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:59,522 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] [2022-02-18 14:54:59,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:59,723 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 [2022-02-18 14:54:59,723 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 191953635, now seen corresponding path program 75 times [2022-02-18 14:54:59,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:59,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950129909] [2022-02-18 14:54:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:59,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:59,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950129909] [2022-02-18 14:54:59,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950129909] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:59,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700996325] [2022-02-18 14:54:59,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:54:59,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:59,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:59,834 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) [2022-02-18 14:54:59,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-18 14:54:59,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-18 14:54:59,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:59,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:54:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:00,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:00,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700996325] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:00,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:00,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-02-18 14:55:00,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139219466] [2022-02-18 14:55:00,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:00,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-18 14:55:00,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-18 14:55:00,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-02-18 14:55:00,469 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) [2022-02-18 14:55:03,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:03,683 INFO L93 Difference]: Finished difference Result 71838 states and 214721 transitions. [2022-02-18 14:55:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-18 14:55:03,683 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 [2022-02-18 14:55:03,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:03,845 INFO L225 Difference]: With dead ends: 71838 [2022-02-18 14:55:03,845 INFO L226 Difference]: Without dead ends: 71754 [2022-02-18 14:55:03,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3599, Invalid=17571, Unknown=0, NotChecked=0, Total=21170 [2022-02-18 14:55:03,846 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1234 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:03,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 2539 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:55:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71754 states. [2022-02-18 14:55:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71754 to 52517. [2022-02-18 14:55:05,043 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) [2022-02-18 14:55:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 158738 transitions. [2022-02-18 14:55:05,186 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 158738 transitions. Word has length 77 [2022-02-18 14:55:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:05,186 INFO L470 AbstractCegarLoop]: Abstraction has 52517 states and 158738 transitions. [2022-02-18 14:55:05,186 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) [2022-02-18 14:55:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 158738 transitions. [2022-02-18 14:55:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:55:05,530 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:05,530 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] [2022-02-18 14:55:05,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:05,731 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 [2022-02-18 14:55:05,731 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:05,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2035609333, now seen corresponding path program 76 times [2022-02-18 14:55:05,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:05,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157246660] [2022-02-18 14:55:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:05,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:05,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157246660] [2022-02-18 14:55:05,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157246660] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:05,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170509130] [2022-02-18 14:55:05,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:55:05,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:05,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:05,833 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) [2022-02-18 14:55:05,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-18 14:55:05,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:55:05,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:05,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:55:05,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:06,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:06,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170509130] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:06,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:06,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-18 14:55:06,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801986898] [2022-02-18 14:55:06,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:06,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:55:06,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:06,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:55:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:55:06,445 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) [2022-02-18 14:55:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:07,658 INFO L93 Difference]: Finished difference Result 54275 states and 163351 transitions. [2022-02-18 14:55:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-18 14:55:07,659 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 [2022-02-18 14:55:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:07,771 INFO L225 Difference]: With dead ends: 54275 [2022-02-18 14:55:07,771 INFO L226 Difference]: Without dead ends: 54179 [2022-02-18 14:55:07,772 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 [2022-02-18 14:55:07,772 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 602 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:07,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1535 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:55:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54179 states. [2022-02-18 14:55:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54179 to 52905. [2022-02-18 14:55:08,786 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) [2022-02-18 14:55:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52905 states to 52905 states and 159901 transitions. [2022-02-18 14:55:08,944 INFO L78 Accepts]: Start accepts. Automaton has 52905 states and 159901 transitions. Word has length 77 [2022-02-18 14:55:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:08,944 INFO L470 AbstractCegarLoop]: Abstraction has 52905 states and 159901 transitions. [2022-02-18 14:55:08,945 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) [2022-02-18 14:55:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 52905 states and 159901 transitions. [2022-02-18 14:55:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:55:09,035 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:09,035 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] [2022-02-18 14:55:09,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:09,236 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 [2022-02-18 14:55:09,236 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash 223279015, now seen corresponding path program 77 times [2022-02-18 14:55:09,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:09,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123997579] [2022-02-18 14:55:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:09,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:09,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:09,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123997579] [2022-02-18 14:55:09,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123997579] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:09,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604665476] [2022-02-18 14:55:09,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:55:09,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:09,354 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) [2022-02-18 14:55:09,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-18 14:55:09,439 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 14:55:09,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:09,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:55:09,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:09,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 14:55:10,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604665476] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:10,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:10,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-18 14:55:10,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754609014] [2022-02-18 14:55:10,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:10,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-18 14:55:10,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-18 14:55:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1124, Unknown=0, NotChecked=0, Total=1332 [2022-02-18 14:55:10,078 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) [2022-02-18 14:55:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:12,044 INFO L93 Difference]: Finished difference Result 58061 states and 173874 transitions. [2022-02-18 14:55:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-18 14:55:12,044 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 [2022-02-18 14:55:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:12,179 INFO L225 Difference]: With dead ends: 58061 [2022-02-18 14:55:12,179 INFO L226 Difference]: Without dead ends: 57911 [2022-02-18 14:55:12,180 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 [2022-02-18 14:55:12,180 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 691 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:12,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 2534 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:55:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57911 states. [2022-02-18 14:55:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57911 to 53649. [2022-02-18 14:55:13,218 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) [2022-02-18 14:55:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53649 states to 53649 states and 162075 transitions. [2022-02-18 14:55:13,549 INFO L78 Accepts]: Start accepts. Automaton has 53649 states and 162075 transitions. Word has length 77 [2022-02-18 14:55:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:13,549 INFO L470 AbstractCegarLoop]: Abstraction has 53649 states and 162075 transitions. [2022-02-18 14:55:13,549 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) [2022-02-18 14:55:13,549 INFO L276 IsEmpty]: Start isEmpty. Operand 53649 states and 162075 transitions. [2022-02-18 14:55:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:55:13,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:13,637 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] [2022-02-18 14:55:13,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:13,837 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 [2022-02-18 14:55:13,837 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash -155653451, now seen corresponding path program 78 times [2022-02-18 14:55:13,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:13,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453696064] [2022-02-18 14:55:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:13,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:13,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453696064] [2022-02-18 14:55:13,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453696064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:13,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153535095] [2022-02-18 14:55:13,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:55:13,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:13,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:13,952 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) [2022-02-18 14:55:13,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-18 14:55:14,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-18 14:55:14,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:14,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 14:55:14,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:14,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 14:55:14,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153535095] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:14,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:14,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 31 [2022-02-18 14:55:14,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404946978] [2022-02-18 14:55:14,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:14,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:55:14,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:55:14,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:55:14,559 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) [2022-02-18 14:55:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:15,901 INFO L93 Difference]: Finished difference Result 60411 states and 181558 transitions. [2022-02-18 14:55:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-18 14:55:15,902 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 [2022-02-18 14:55:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:16,048 INFO L225 Difference]: With dead ends: 60411 [2022-02-18 14:55:16,048 INFO L226 Difference]: Without dead ends: 60315 [2022-02-18 14:55:16,048 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 [2022-02-18 14:55:16,049 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 562 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:16,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 2166 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:55:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60315 states. [2022-02-18 14:55:17,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60315 to 56021. [2022-02-18 14:55:17,176 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) [2022-02-18 14:55:17,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56021 states to 56021 states and 169398 transitions. [2022-02-18 14:55:17,347 INFO L78 Accepts]: Start accepts. Automaton has 56021 states and 169398 transitions. Word has length 77 [2022-02-18 14:55:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:17,347 INFO L470 AbstractCegarLoop]: Abstraction has 56021 states and 169398 transitions. [2022-02-18 14:55:17,347 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) [2022-02-18 14:55:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 56021 states and 169398 transitions. [2022-02-18 14:55:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:55:17,674 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:17,674 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] [2022-02-18 14:55:17,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:17,887 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 [2022-02-18 14:55:17,887 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash 31792739, now seen corresponding path program 79 times [2022-02-18 14:55:17,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:17,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176836016] [2022-02-18 14:55:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:18,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:18,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176836016] [2022-02-18 14:55:18,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176836016] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:18,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454055391] [2022-02-18 14:55:18,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:55:18,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:18,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:18,014 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) [2022-02-18 14:55:18,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-18 14:55:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:18,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 14:55:18,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:18,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 14:55:18,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454055391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:18,754 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:18,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-18 14:55:18,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250207134] [2022-02-18 14:55:18,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:18,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-18 14:55:18,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-18 14:55:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2022-02-18 14:55:18,755 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) [2022-02-18 14:55:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:20,747 INFO L93 Difference]: Finished difference Result 63634 states and 190182 transitions. [2022-02-18 14:55:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-18 14:55:20,748 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 [2022-02-18 14:55:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:20,893 INFO L225 Difference]: With dead ends: 63634 [2022-02-18 14:55:20,893 INFO L226 Difference]: Without dead ends: 63469 [2022-02-18 14:55:20,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1981, Invalid=8321, Unknown=0, NotChecked=0, Total=10302 [2022-02-18 14:55:20,894 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 744 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:20,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 2607 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:55:20,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63469 states. [2022-02-18 14:55:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63469 to 54757. [2022-02-18 14:55:22,032 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) [2022-02-18 14:55:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54757 states to 54757 states and 165366 transitions. [2022-02-18 14:55:22,181 INFO L78 Accepts]: Start accepts. Automaton has 54757 states and 165366 transitions. Word has length 77 [2022-02-18 14:55:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:22,181 INFO L470 AbstractCegarLoop]: Abstraction has 54757 states and 165366 transitions. [2022-02-18 14:55:22,181 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) [2022-02-18 14:55:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 54757 states and 165366 transitions. [2022-02-18 14:55:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:55:22,536 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:22,536 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] [2022-02-18 14:55:22,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-18 14:55:22,755 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 [2022-02-18 14:55:22,755 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:22,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1890973665, now seen corresponding path program 80 times [2022-02-18 14:55:22,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:22,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188697430] [2022-02-18 14:55:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:22,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:22,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:22,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188697430] [2022-02-18 14:55:22,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188697430] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:22,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611675005] [2022-02-18 14:55:22,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:55:22,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:22,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:22,822 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) [2022-02-18 14:55:22,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-18 14:55:22,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:55:22,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:22,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-18 14:55:22,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:23,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:23,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611675005] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:23,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:23,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2022-02-18 14:55:23,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138730253] [2022-02-18 14:55:23,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:23,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-18 14:55:23,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-18 14:55:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-18 14:55:23,684 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) [2022-02-18 14:55:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:24,355 INFO L93 Difference]: Finished difference Result 86252 states and 263480 transitions. [2022-02-18 14:55:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-18 14:55:24,356 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 [2022-02-18 14:55:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:24,560 INFO L225 Difference]: With dead ends: 86252 [2022-02-18 14:55:24,560 INFO L226 Difference]: Without dead ends: 86024 [2022-02-18 14:55:24,560 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 [2022-02-18 14:55:24,560 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 313 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:24,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 959 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:55:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86024 states. [2022-02-18 14:55:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86024 to 78062. [2022-02-18 14:55:26,227 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) [2022-02-18 14:55:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78062 states to 78062 states and 236836 transitions. [2022-02-18 14:55:26,466 INFO L78 Accepts]: Start accepts. Automaton has 78062 states and 236836 transitions. Word has length 79 [2022-02-18 14:55:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:26,466 INFO L470 AbstractCegarLoop]: Abstraction has 78062 states and 236836 transitions. [2022-02-18 14:55:26,466 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) [2022-02-18 14:55:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 78062 states and 236836 transitions. [2022-02-18 14:55:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:55:26,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:26,598 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] [2022-02-18 14:55:26,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:26,798 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 [2022-02-18 14:55:26,798 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:26,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:26,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1781177015, now seen corresponding path program 81 times [2022-02-18 14:55:26,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:26,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716600962] [2022-02-18 14:55:26,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:26,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:26,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:26,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716600962] [2022-02-18 14:55:26,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716600962] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:26,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415146878] [2022-02-18 14:55:26,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:55:26,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:26,958 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) [2022-02-18 14:55:26,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-18 14:55:27,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-18 14:55:27,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:27,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-18 14:55:27,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:27,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:27,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415146878] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:27,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:27,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 22 [2022-02-18 14:55:27,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870359135] [2022-02-18 14:55:27,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:27,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-18 14:55:27,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-18 14:55:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-02-18 14:55:27,798 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) [2022-02-18 14:55:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:29,001 INFO L93 Difference]: Finished difference Result 90363 states and 273656 transitions. [2022-02-18 14:55:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-18 14:55:29,002 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 [2022-02-18 14:55:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:29,224 INFO L225 Difference]: With dead ends: 90363 [2022-02-18 14:55:29,224 INFO L226 Difference]: Without dead ends: 90348 [2022-02-18 14:55:29,224 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 [2022-02-18 14:55:29,224 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 443 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:29,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1991 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:55:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90348 states. [2022-02-18 14:55:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90348 to 81518. [2022-02-18 14:55:30,935 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) [2022-02-18 14:55:31,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81518 states to 81518 states and 248052 transitions. [2022-02-18 14:55:31,204 INFO L78 Accepts]: Start accepts. Automaton has 81518 states and 248052 transitions. Word has length 79 [2022-02-18 14:55:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:31,204 INFO L470 AbstractCegarLoop]: Abstraction has 81518 states and 248052 transitions. [2022-02-18 14:55:31,204 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) [2022-02-18 14:55:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 81518 states and 248052 transitions. [2022-02-18 14:55:31,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:55:31,343 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:31,343 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] [2022-02-18 14:55:31,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:31,543 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 [2022-02-18 14:55:31,543 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash -273105791, now seen corresponding path program 82 times [2022-02-18 14:55:31,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:31,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723091044] [2022-02-18 14:55:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:31,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:31,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:31,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723091044] [2022-02-18 14:55:31,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723091044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:31,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879214619] [2022-02-18 14:55:31,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:55:31,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:31,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:31,691 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) [2022-02-18 14:55:31,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-18 14:55:31,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:55:31,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:31,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:55:31,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:32,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:32,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879214619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:32,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:32,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-02-18 14:55:32,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558037864] [2022-02-18 14:55:32,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:32,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:55:32,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:55:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:55:32,904 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) [2022-02-18 14:55:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:37,275 INFO L93 Difference]: Finished difference Result 115213 states and 345840 transitions. [2022-02-18 14:55:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-02-18 14:55:37,276 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 [2022-02-18 14:55:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:37,636 INFO L225 Difference]: With dead ends: 115213 [2022-02-18 14:55:37,637 INFO L226 Difference]: Without dead ends: 115003 [2022-02-18 14:55:37,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10414 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3727, Invalid=23995, Unknown=0, NotChecked=0, Total=27722 [2022-02-18 14:55:37,639 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 991 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:37,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 3279 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:55:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115003 states. [2022-02-18 14:55:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115003 to 84166. [2022-02-18 14:55:39,573 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) [2022-02-18 14:55:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84166 states to 84166 states and 255742 transitions. [2022-02-18 14:55:40,152 INFO L78 Accepts]: Start accepts. Automaton has 84166 states and 255742 transitions. Word has length 79 [2022-02-18 14:55:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:40,152 INFO L470 AbstractCegarLoop]: Abstraction has 84166 states and 255742 transitions. [2022-02-18 14:55:40,153 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) [2022-02-18 14:55:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 84166 states and 255742 transitions. [2022-02-18 14:55:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:55:40,304 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:40,304 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] [2022-02-18 14:55:40,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-18 14:55:40,505 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 [2022-02-18 14:55:40,505 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash 261115223, now seen corresponding path program 83 times [2022-02-18 14:55:40,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:40,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173159383] [2022-02-18 14:55:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:40,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:40,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:40,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173159383] [2022-02-18 14:55:40,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173159383] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:40,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947894165] [2022-02-18 14:55:40,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:55:40,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:40,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:40,658 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) [2022-02-18 14:55:40,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-18 14:55:40,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 14:55:40,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:40,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-18 14:55:40,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:41,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:41,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947894165] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:41,811 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:41,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-02-18 14:55:41,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915003914] [2022-02-18 14:55:41,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:41,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:55:41,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:55:41,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1218, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:55:41,813 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) [2022-02-18 14:55:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:46,503 INFO L93 Difference]: Finished difference Result 128331 states and 384407 transitions. [2022-02-18 14:55:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-02-18 14:55:46,503 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 [2022-02-18 14:55:46,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:47,100 INFO L225 Difference]: With dead ends: 128331 [2022-02-18 14:55:47,101 INFO L226 Difference]: Without dead ends: 128235 [2022-02-18 14:55:47,101 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 [2022-02-18 14:55:47,102 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 1470 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:47,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 3480 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1966 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:55:47,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128235 states. [2022-02-18 14:55:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128235 to 84626. [2022-02-18 14:55:49,140 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) [2022-02-18 14:55:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84626 states to 84626 states and 257095 transitions. [2022-02-18 14:55:49,711 INFO L78 Accepts]: Start accepts. Automaton has 84626 states and 257095 transitions. Word has length 79 [2022-02-18 14:55:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:49,712 INFO L470 AbstractCegarLoop]: Abstraction has 84626 states and 257095 transitions. [2022-02-18 14:55:49,712 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) [2022-02-18 14:55:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 84626 states and 257095 transitions. [2022-02-18 14:55:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:55:49,858 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:49,858 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] [2022-02-18 14:55:49,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:50,071 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 [2022-02-18 14:55:50,071 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 402406013, now seen corresponding path program 84 times [2022-02-18 14:55:50,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:50,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391276349] [2022-02-18 14:55:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:50,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:50,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391276349] [2022-02-18 14:55:50,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391276349] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:50,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277270409] [2022-02-18 14:55:50,197 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:55:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:50,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:50,198 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) [2022-02-18 14:55:50,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-18 14:55:50,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 14:55:50,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:50,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:55:50,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:50,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:51,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277270409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:51,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:51,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 30 [2022-02-18 14:55:51,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705005655] [2022-02-18 14:55:51,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:51,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-18 14:55:51,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-18 14:55:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2022-02-18 14:55:51,124 INFO L87 Difference]: Start difference. First operand 84626 states and 257095 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 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) [2022-02-18 14:55:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:55,933 INFO L93 Difference]: Finished difference Result 142378 states and 429999 transitions. [2022-02-18 14:55:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-02-18 14:55:55,933 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 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 [2022-02-18 14:55:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:56,633 INFO L225 Difference]: With dead ends: 142378 [2022-02-18 14:55:56,633 INFO L226 Difference]: Without dead ends: 142333 [2022-02-18 14:55:56,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3833, Invalid=23227, Unknown=0, NotChecked=0, Total=27060 [2022-02-18 14:55:56,634 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1197 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:56,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 2860 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:55:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142333 states. [2022-02-18 14:55:59,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142333 to 96218. [2022-02-18 14:55:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96218 states, 96217 states have (on average 3.0464574867227205) internal successors, (293121), 96217 states have internal predecessors, (293121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96218 states to 96218 states and 293121 transitions. [2022-02-18 14:55:59,505 INFO L78 Accepts]: Start accepts. Automaton has 96218 states and 293121 transitions. Word has length 79 [2022-02-18 14:55:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:59,505 INFO L470 AbstractCegarLoop]: Abstraction has 96218 states and 293121 transitions. [2022-02-18 14:55:59,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 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) [2022-02-18 14:55:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 96218 states and 293121 transitions. [2022-02-18 14:55:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:55:59,667 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:59,667 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] [2022-02-18 14:55:59,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-18 14:55:59,867 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 [2022-02-18 14:55:59,867 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1136477801, now seen corresponding path program 85 times [2022-02-18 14:55:59,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:59,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959654876] [2022-02-18 14:55:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:59,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:59,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959654876] [2022-02-18 14:55:59,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959654876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:59,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612026690] [2022-02-18 14:55:59,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:55:59,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:59,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:59,996 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) [2022-02-18 14:55:59,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-18 14:56:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:00,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:56:00,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:00,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:01,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612026690] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:01,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:01,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2022-02-18 14:56:01,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911868208] [2022-02-18 14:56:01,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:01,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:56:01,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:01,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:56:01,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:56:01,242 INFO L87 Difference]: Start difference. First operand 96218 states and 293121 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) [2022-02-18 14:56:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:05,780 INFO L93 Difference]: Finished difference Result 182881 states and 556937 transitions. [2022-02-18 14:56:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-18 14:56:05,780 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 [2022-02-18 14:56:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:06,377 INFO L225 Difference]: With dead ends: 182881 [2022-02-18 14:56:06,377 INFO L226 Difference]: Without dead ends: 182737 [2022-02-18 14:56:06,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7095 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2951, Invalid=17641, Unknown=0, NotChecked=0, Total=20592 [2022-02-18 14:56:06,378 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1223 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:06,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 3784 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:56:06,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182737 states. [2022-02-18 14:56:09,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182737 to 121110. [2022-02-18 14:56:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121110 states, 121109 states have (on average 3.0598716858367254) internal successors, (370578), 121109 states have internal predecessors, (370578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121110 states to 121110 states and 370578 transitions. [2022-02-18 14:56:10,406 INFO L78 Accepts]: Start accepts. Automaton has 121110 states and 370578 transitions. Word has length 79 [2022-02-18 14:56:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:10,406 INFO L470 AbstractCegarLoop]: Abstraction has 121110 states and 370578 transitions. [2022-02-18 14:56:10,406 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) [2022-02-18 14:56:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 121110 states and 370578 transitions. [2022-02-18 14:56:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:56:11,012 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:11,012 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] [2022-02-18 14:56:11,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:11,213 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 [2022-02-18 14:56:11,213 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1652623033, now seen corresponding path program 86 times [2022-02-18 14:56:11,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:11,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149455242] [2022-02-18 14:56:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:11,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:11,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149455242] [2022-02-18 14:56:11,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149455242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:11,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043782652] [2022-02-18 14:56:11,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:56:11,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:11,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:11,336 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) [2022-02-18 14:56:11,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-18 14:56:11,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:56:11,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:11,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:56:11,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:11,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:12,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043782652] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:12,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:12,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-02-18 14:56:12,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045765544] [2022-02-18 14:56:12,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:12,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:56:12,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:56:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:56:12,244 INFO L87 Difference]: Start difference. First operand 121110 states and 370578 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) [2022-02-18 14:56:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:16,397 INFO L93 Difference]: Finished difference Result 169697 states and 518906 transitions. [2022-02-18 14:56:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-18 14:56:16,398 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 [2022-02-18 14:56:16,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:17,181 INFO L225 Difference]: With dead ends: 169697 [2022-02-18 14:56:17,182 INFO L226 Difference]: Without dead ends: 169577 [2022-02-18 14:56:17,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5506 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2343, Invalid=14169, Unknown=0, NotChecked=0, Total=16512 [2022-02-18 14:56:17,182 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1102 mSDsluCounter, 3460 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:17,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3502 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:56:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169577 states. [2022-02-18 14:56:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169577 to 124346. [2022-02-18 14:56:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124346 states, 124345 states have (on average 3.061715388636455) internal successors, (380709), 124345 states have internal predecessors, (380709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124346 states to 124346 states and 380709 transitions. [2022-02-18 14:56:20,764 INFO L78 Accepts]: Start accepts. Automaton has 124346 states and 380709 transitions. Word has length 79 [2022-02-18 14:56:20,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:20,764 INFO L470 AbstractCegarLoop]: Abstraction has 124346 states and 380709 transitions. [2022-02-18 14:56:20,765 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) [2022-02-18 14:56:20,765 INFO L276 IsEmpty]: Start isEmpty. Operand 124346 states and 380709 transitions. [2022-02-18 14:56:21,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:56:21,372 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:21,372 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] [2022-02-18 14:56:21,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:21,572 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 [2022-02-18 14:56:21,573 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:21,573 INFO L85 PathProgramCache]: Analyzing trace with hash 549056321, now seen corresponding path program 87 times [2022-02-18 14:56:21,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:21,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904118861] [2022-02-18 14:56:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:21,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:21,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:21,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904118861] [2022-02-18 14:56:21,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904118861] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:21,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838858555] [2022-02-18 14:56:21,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:56:21,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:21,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:21,697 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) [2022-02-18 14:56:21,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-18 14:56:21,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-18 14:56:21,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:21,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-18 14:56:21,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:22,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:22,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838858555] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:22,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:22,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-18 14:56:22,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373105092] [2022-02-18 14:56:22,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:22,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-18 14:56:22,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-18 14:56:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2022-02-18 14:56:22,682 INFO L87 Difference]: Start difference. First operand 124346 states and 380709 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) [2022-02-18 14:56:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:29,462 INFO L93 Difference]: Finished difference Result 189583 states and 574741 transitions. [2022-02-18 14:56:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-02-18 14:56:29,463 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 [2022-02-18 14:56:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:30,104 INFO L225 Difference]: With dead ends: 189583 [2022-02-18 14:56:30,104 INFO L226 Difference]: Without dead ends: 189538 [2022-02-18 14:56:30,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23293 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8337, Invalid=47595, Unknown=0, NotChecked=0, Total=55932 [2022-02-18 14:56:30,106 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 2054 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:30,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2054 Valid, 3056 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:56:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189538 states. [2022-02-18 14:56:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189538 to 132022. [2022-02-18 14:56:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132022 states, 132021 states have (on average 3.061043318865938) internal successors, (404122), 132021 states have internal predecessors, (404122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132022 states to 132022 states and 404122 transitions. [2022-02-18 14:56:34,778 INFO L78 Accepts]: Start accepts. Automaton has 132022 states and 404122 transitions. Word has length 79 [2022-02-18 14:56:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:34,778 INFO L470 AbstractCegarLoop]: Abstraction has 132022 states and 404122 transitions. [2022-02-18 14:56:34,778 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) [2022-02-18 14:56:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 132022 states and 404122 transitions. [2022-02-18 14:56:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:56:35,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:35,028 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] [2022-02-18 14:56:35,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-18 14:56:35,228 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 [2022-02-18 14:56:35,228 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:35,229 INFO L85 PathProgramCache]: Analyzing trace with hash -989827493, now seen corresponding path program 88 times [2022-02-18 14:56:35,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:35,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592742562] [2022-02-18 14:56:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:35,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:35,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:35,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592742562] [2022-02-18 14:56:35,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592742562] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:35,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287423317] [2022-02-18 14:56:35,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:56:35,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:35,392 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) [2022-02-18 14:56:35,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-18 14:56:35,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:56:35,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:35,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:56:35,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:35,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:56:36,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287423317] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:36,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:36,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 34 [2022-02-18 14:56:36,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772863921] [2022-02-18 14:56:36,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:36,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:56:36,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:56:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:56:36,441 INFO L87 Difference]: Start difference. First operand 132022 states and 404122 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) [2022-02-18 14:56:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:42,315 INFO L93 Difference]: Finished difference Result 196347 states and 599817 transitions. [2022-02-18 14:56:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-02-18 14:56:42,315 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 [2022-02-18 14:56:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:43,295 INFO L225 Difference]: With dead ends: 196347 [2022-02-18 14:56:43,295 INFO L226 Difference]: Without dead ends: 196275 [2022-02-18 14:56:43,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15896 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5887, Invalid=34313, Unknown=0, NotChecked=0, Total=40200 [2022-02-18 14:56:43,297 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1725 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:43,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 2777 Invalid, 2152 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [455 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:56:43,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196275 states. [2022-02-18 14:56:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196275 to 130966. [2022-02-18 14:56:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130966 states, 130965 states have (on average 3.0608025044859315) internal successors, (400858), 130965 states have internal predecessors, (400858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130966 states to 130966 states and 400858 transitions. [2022-02-18 14:56:47,718 INFO L78 Accepts]: Start accepts. Automaton has 130966 states and 400858 transitions. Word has length 79 [2022-02-18 14:56:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:47,718 INFO L470 AbstractCegarLoop]: Abstraction has 130966 states and 400858 transitions. [2022-02-18 14:56:47,718 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) [2022-02-18 14:56:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 130966 states and 400858 transitions. [2022-02-18 14:56:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:56:47,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:47,931 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] [2022-02-18 14:56:47,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:48,131 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 [2022-02-18 14:56:48,132 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1799273341, now seen corresponding path program 89 times [2022-02-18 14:56:48,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:48,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572634392] [2022-02-18 14:56:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:48,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:48,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:48,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572634392] [2022-02-18 14:56:48,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572634392] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:48,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066248383] [2022-02-18 14:56:48,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:56:48,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:48,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:48,272 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) [2022-02-18 14:56:48,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-18 14:56:48,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-18 14:56:48,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:48,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-18 14:56:48,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:48,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:49,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066248383] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:49,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:49,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-02-18 14:56:49,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538245303] [2022-02-18 14:56:49,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:49,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-18 14:56:49,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-18 14:56:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2022-02-18 14:56:49,552 INFO L87 Difference]: Start difference. First operand 130966 states and 400858 transitions. Second operand has 36 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 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) [2022-02-18 14:56:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:55,815 INFO L93 Difference]: Finished difference Result 197132 states and 596544 transitions. [2022-02-18 14:56:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-02-18 14:56:55,815 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 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 [2022-02-18 14:56:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:56,823 INFO L225 Difference]: With dead ends: 197132 [2022-02-18 14:56:56,823 INFO L226 Difference]: Without dead ends: 197012 [2022-02-18 14:56:56,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13990 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5290, Invalid=31000, Unknown=0, NotChecked=0, Total=36290 [2022-02-18 14:56:56,824 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1318 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:56,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 3897 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:56:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197012 states. [2022-02-18 14:57:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197012 to 132266. [2022-02-18 14:57:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132266 states, 132265 states have (on average 3.0602578157486864) internal successors, (404765), 132265 states have internal predecessors, (404765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132266 states to 132266 states and 404765 transitions. [2022-02-18 14:57:01,240 INFO L78 Accepts]: Start accepts. Automaton has 132266 states and 404765 transitions. Word has length 79 [2022-02-18 14:57:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:01,240 INFO L470 AbstractCegarLoop]: Abstraction has 132266 states and 404765 transitions. [2022-02-18 14:57:01,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 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) [2022-02-18 14:57:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 132266 states and 404765 transitions. [2022-02-18 14:57:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:57:01,468 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:01,469 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] [2022-02-18 14:57:01,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:01,669 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 [2022-02-18 14:57:01,669 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:01,670 INFO L85 PathProgramCache]: Analyzing trace with hash -652038257, now seen corresponding path program 90 times [2022-02-18 14:57:01,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:01,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007568550] [2022-02-18 14:57:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:01,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:01,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:01,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007568550] [2022-02-18 14:57:01,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007568550] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:01,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782798146] [2022-02-18 14:57:01,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:57:01,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:01,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:01,812 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) [2022-02-18 14:57:01,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-18 14:57:01,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-18 14:57:01,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:01,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-18 14:57:01,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:02,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:03,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782798146] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:03,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:03,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 34 [2022-02-18 14:57:03,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574949925] [2022-02-18 14:57:03,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:03,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:57:03,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:57:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:57:03,101 INFO L87 Difference]: Start difference. First operand 132266 states and 404765 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) [2022-02-18 14:57:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:06,039 INFO L93 Difference]: Finished difference Result 140697 states and 428786 transitions. [2022-02-18 14:57:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-18 14:57:06,040 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 [2022-02-18 14:57:06,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:06,718 INFO L225 Difference]: With dead ends: 140697 [2022-02-18 14:57:06,719 INFO L226 Difference]: Without dead ends: 140601 [2022-02-18 14:57:06,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4368 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1890, Invalid=10766, Unknown=0, NotChecked=0, Total=12656 [2022-02-18 14:57:06,719 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1004 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:06,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 2830 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:57:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140601 states. [2022-02-18 14:57:09,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140601 to 132914. [2022-02-18 14:57:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132914 states, 132913 states have (on average 3.0602800328034125) internal successors, (406751), 132913 states have internal predecessors, (406751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132914 states to 132914 states and 406751 transitions. [2022-02-18 14:57:10,301 INFO L78 Accepts]: Start accepts. Automaton has 132914 states and 406751 transitions. Word has length 79 [2022-02-18 14:57:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:10,301 INFO L470 AbstractCegarLoop]: Abstraction has 132914 states and 406751 transitions. [2022-02-18 14:57:10,301 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) [2022-02-18 14:57:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 132914 states and 406751 transitions. [2022-02-18 14:57:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:57:10,527 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:10,527 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] [2022-02-18 14:57:10,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:10,727 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 [2022-02-18 14:57:10,728 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash 679914949, now seen corresponding path program 91 times [2022-02-18 14:57:10,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:10,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139933049] [2022-02-18 14:57:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:10,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:10,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139933049] [2022-02-18 14:57:10,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139933049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:10,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920768609] [2022-02-18 14:57:10,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:57:10,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:10,864 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) [2022-02-18 14:57:10,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-18 14:57:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:11,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:57:11,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:11,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:12,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920768609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:12,144 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:12,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-02-18 14:57:12,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167633775] [2022-02-18 14:57:12,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:12,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:57:12,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:57:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:57:12,145 INFO L87 Difference]: Start difference. First operand 132914 states and 406751 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) [2022-02-18 14:57:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:17,331 INFO L93 Difference]: Finished difference Result 205673 states and 617592 transitions. [2022-02-18 14:57:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-18 14:57:17,331 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 [2022-02-18 14:57:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:18,374 INFO L225 Difference]: With dead ends: 205673 [2022-02-18 14:57:18,375 INFO L226 Difference]: Without dead ends: 205478 [2022-02-18 14:57:18,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10186 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3491, Invalid=23241, Unknown=0, NotChecked=0, Total=26732 [2022-02-18 14:57:18,376 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 846 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:18,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 3990 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:57:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205478 states. [2022-02-18 14:57:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205478 to 161234. [2022-02-18 14:57:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161234 states, 161233 states have (on average 3.0193756861188468) internal successors, (486823), 161233 states have internal predecessors, (486823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161234 states to 161234 states and 486823 transitions. [2022-02-18 14:57:23,416 INFO L78 Accepts]: Start accepts. Automaton has 161234 states and 486823 transitions. Word has length 79 [2022-02-18 14:57:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:23,417 INFO L470 AbstractCegarLoop]: Abstraction has 161234 states and 486823 transitions. [2022-02-18 14:57:23,417 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) [2022-02-18 14:57:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 161234 states and 486823 transitions. [2022-02-18 14:57:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:57:23,654 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:23,654 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] [2022-02-18 14:57:23,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:23,854 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 [2022-02-18 14:57:23,855 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:23,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1542673215, now seen corresponding path program 92 times [2022-02-18 14:57:23,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:23,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101173014] [2022-02-18 14:57:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:23,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:23,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101173014] [2022-02-18 14:57:23,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101173014] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:23,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918481176] [2022-02-18 14:57:23,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:57:23,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:23,977 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) [2022-02-18 14:57:23,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-18 14:57:24,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:57:24,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:24,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:57:24,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:24,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:25,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918481176] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:25,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:25,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-02-18 14:57:25,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642242164] [2022-02-18 14:57:25,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:25,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:57:25,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:25,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:57:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:57:25,104 INFO L87 Difference]: Start difference. First operand 161234 states and 486823 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) [2022-02-18 14:57:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:31,625 INFO L93 Difference]: Finished difference Result 268771 states and 809207 transitions. [2022-02-18 14:57:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-02-18 14:57:31,625 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 [2022-02-18 14:57:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:32,940 INFO L225 Difference]: With dead ends: 268771 [2022-02-18 14:57:32,940 INFO L226 Difference]: Without dead ends: 268531 [2022-02-18 14:57:32,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10866 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4977, Invalid=24779, Unknown=0, NotChecked=0, Total=29756 [2022-02-18 14:57:32,942 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1174 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:32,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 4222 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:57:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268531 states. [2022-02-18 14:57:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268531 to 194614. [2022-02-18 14:57:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194614 states, 194613 states have (on average 3.027351718538844) internal successors, (589162), 194613 states have internal predecessors, (589162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194614 states to 194614 states and 589162 transitions. [2022-02-18 14:57:39,223 INFO L78 Accepts]: Start accepts. Automaton has 194614 states and 589162 transitions. Word has length 79 [2022-02-18 14:57:39,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:39,223 INFO L470 AbstractCegarLoop]: Abstraction has 194614 states and 589162 transitions. [2022-02-18 14:57:39,223 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) [2022-02-18 14:57:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 194614 states and 589162 transitions. [2022-02-18 14:57:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:57:40,220 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:40,220 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] [2022-02-18 14:57:40,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:40,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-02-18 14:57:40,435 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash 300982483, now seen corresponding path program 93 times [2022-02-18 14:57:40,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:40,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695104314] [2022-02-18 14:57:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:40,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:40,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:40,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695104314] [2022-02-18 14:57:40,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695104314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:40,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42067658] [2022-02-18 14:57:40,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:57:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:40,625 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:57:40,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-18 14:57:40,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-18 14:57:40,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:40,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-18 14:57:40,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:41,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:41,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42067658] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:41,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:41,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-18 14:57:41,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759944752] [2022-02-18 14:57:41,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:41,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-18 14:57:41,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-18 14:57:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2022-02-18 14:57:41,728 INFO L87 Difference]: Start difference. First operand 194614 states and 589162 transitions. Second operand has 37 states, 37 states have (on average 4.1891891891891895) internal successors, (155), 37 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) [2022-02-18 14:57:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:48,955 INFO L93 Difference]: Finished difference Result 261201 states and 782282 transitions. [2022-02-18 14:57:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-02-18 14:57:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.1891891891891895) internal successors, (155), 37 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 [2022-02-18 14:57:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:49,875 INFO L225 Difference]: With dead ends: 261201 [2022-02-18 14:57:49,875 INFO L226 Difference]: Without dead ends: 261033 [2022-02-18 14:57:49,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14901 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5796, Invalid=32816, Unknown=0, NotChecked=0, Total=38612 [2022-02-18 14:57:49,877 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1469 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:49,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 3802 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:57:50,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261033 states. [2022-02-18 14:57:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261033 to 194770. [2022-02-18 14:57:55,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194770 states, 194769 states have (on average 3.0286698601933573) internal successors, (589891), 194769 states have internal predecessors, (589891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194770 states to 194770 states and 589891 transitions. [2022-02-18 14:57:56,854 INFO L78 Accepts]: Start accepts. Automaton has 194770 states and 589891 transitions. Word has length 79 [2022-02-18 14:57:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:56,855 INFO L470 AbstractCegarLoop]: Abstraction has 194770 states and 589891 transitions. [2022-02-18 14:57:56,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.1891891891891895) internal successors, (155), 37 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) [2022-02-18 14:57:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 194770 states and 589891 transitions. [2022-02-18 14:57:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:57:57,624 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:57,624 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] [2022-02-18 14:57:57,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-02-18 14:57:57,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-18 14:57:57,825 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash 984893377, now seen corresponding path program 94 times [2022-02-18 14:57:57,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:57,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969733312] [2022-02-18 14:57:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:57,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:57,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969733312] [2022-02-18 14:57:57,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969733312] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:57,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171030333] [2022-02-18 14:57:57,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:57:57,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:58,000 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:57:58,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-18 14:57:58,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:57:58,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:58,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:57:58,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:58,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:58,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171030333] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:58,988 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:58,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 38 [2022-02-18 14:57:58,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155749699] [2022-02-18 14:57:58,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:58,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 14:57:58,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:58,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 14:57:58,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 14:57:58,989 INFO L87 Difference]: Start difference. First operand 194770 states and 589891 transitions. Second operand has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:03,694 INFO L93 Difference]: Finished difference Result 273761 states and 819788 transitions. [2022-02-18 14:58:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-02-18 14:58:03,694 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-18 14:58:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:05,056 INFO L225 Difference]: With dead ends: 273761 [2022-02-18 14:58:05,057 INFO L226 Difference]: Without dead ends: 273491 [2022-02-18 14:58:05,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7584 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2816, Invalid=17490, Unknown=0, NotChecked=0, Total=20306 [2022-02-18 14:58:05,058 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 866 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 4688 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:05,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 4688 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:58:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273491 states. [2022-02-18 14:58:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273491 to 202898. [2022-02-18 14:58:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202898 states, 202897 states have (on average 3.019714436388907) internal successors, (612691), 202897 states have internal predecessors, (612691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202898 states to 202898 states and 612691 transitions. [2022-02-18 14:58:12,242 INFO L78 Accepts]: Start accepts. Automaton has 202898 states and 612691 transitions. Word has length 79 [2022-02-18 14:58:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:12,243 INFO L470 AbstractCegarLoop]: Abstraction has 202898 states and 612691 transitions. [2022-02-18 14:58:12,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 202898 states and 612691 transitions. [2022-02-18 14:58:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:58:12,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:12,578 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] [2022-02-18 14:58:12,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:12,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:12,778 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1036643905, now seen corresponding path program 95 times [2022-02-18 14:58:12,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:12,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079357319] [2022-02-18 14:58:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:12,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:12,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079357319] [2022-02-18 14:58:12,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079357319] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:12,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967752114] [2022-02-18 14:58:12,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:58:12,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:12,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:12,906 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:12,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-18 14:58:13,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 14:58:13,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:13,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-18 14:58:13,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:13,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:14,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967752114] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:14,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:14,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-02-18 14:58:14,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553564202] [2022-02-18 14:58:14,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:14,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:58:14,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:14,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:58:14,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:58:14,191 INFO L87 Difference]: Start difference. First operand 202898 states and 612691 transitions. Second operand has 34 states, 34 states have (on average 4.764705882352941) internal successors, (162), 34 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) [2022-02-18 14:58:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:17,545 INFO L93 Difference]: Finished difference Result 221283 states and 665607 transitions. [2022-02-18 14:58:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-18 14:58:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.764705882352941) internal successors, (162), 34 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 79 [2022-02-18 14:58:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:18,371 INFO L225 Difference]: With dead ends: 221283 [2022-02-18 14:58:18,371 INFO L226 Difference]: Without dead ends: 221088 [2022-02-18 14:58:18,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1359, Invalid=7571, Unknown=0, NotChecked=0, Total=8930 [2022-02-18 14:58:18,371 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 686 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:18,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 2192 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:58:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221088 states. [2022-02-18 14:58:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221088 to 209798. [2022-02-18 14:58:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209798 states, 209797 states have (on average 3.018470235513377) internal successors, (633266), 209797 states have internal predecessors, (633266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209798 states to 209798 states and 633266 transitions. [2022-02-18 14:58:25,758 INFO L78 Accepts]: Start accepts. Automaton has 209798 states and 633266 transitions. Word has length 79 [2022-02-18 14:58:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:25,758 INFO L470 AbstractCegarLoop]: Abstraction has 209798 states and 633266 transitions. [2022-02-18 14:58:25,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.764705882352941) internal successors, (162), 34 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) [2022-02-18 14:58:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 209798 states and 633266 transitions. [2022-02-18 14:58:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:58:26,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:26,241 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] [2022-02-18 14:58:26,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:26,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:26,464 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1570864919, now seen corresponding path program 96 times [2022-02-18 14:58:26,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:26,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178693724] [2022-02-18 14:58:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:27,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:27,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178693724] [2022-02-18 14:58:27,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178693724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:27,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438974412] [2022-02-18 14:58:27,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:58:27,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:27,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:27,016 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:27,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-18 14:58:27,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 14:58:27,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:27,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-18 14:58:27,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:27,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 14:58:28,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438974412] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:28,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:28,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 35 [2022-02-18 14:58:28,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122479304] [2022-02-18 14:58:28,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:28,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:58:28,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:58:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:58:28,251 INFO L87 Difference]: Start difference. First operand 209798 states and 633266 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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) [2022-02-18 14:58:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:32,143 INFO L93 Difference]: Finished difference Result 240284 states and 723976 transitions. [2022-02-18 14:58:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-18 14:58:32,144 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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 [2022-02-18 14:58:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:33,323 INFO L225 Difference]: With dead ends: 240284 [2022-02-18 14:58:33,323 INFO L226 Difference]: Without dead ends: 240068 [2022-02-18 14:58:33,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3043 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1369, Invalid=7561, Unknown=0, NotChecked=0, Total=8930 [2022-02-18 14:58:33,323 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 892 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:33,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 2356 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:58:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240068 states. [2022-02-18 14:58:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240068 to 216834. [2022-02-18 14:58:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216834 states, 216833 states have (on average 3.0213067199180936) internal successors, (655119), 216833 states have internal predecessors, (655119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216834 states to 216834 states and 655119 transitions. [2022-02-18 14:58:40,261 INFO L78 Accepts]: Start accepts. Automaton has 216834 states and 655119 transitions. Word has length 79 [2022-02-18 14:58:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:40,261 INFO L470 AbstractCegarLoop]: Abstraction has 216834 states and 655119 transitions. [2022-02-18 14:58:40,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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) [2022-02-18 14:58:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 216834 states and 655119 transitions. [2022-02-18 14:58:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:58:40,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:40,619 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] [2022-02-18 14:58:40,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:40,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-02-18 14:58:40,819 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1712155709, now seen corresponding path program 97 times [2022-02-18 14:58:40,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:40,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305243796] [2022-02-18 14:58:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:41,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:41,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305243796] [2022-02-18 14:58:41,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305243796] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:41,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923674110] [2022-02-18 14:58:41,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:58:41,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:41,319 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:41,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-18 14:58:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:41,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:58:41,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:41,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:42,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923674110] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:42,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:42,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 34 [2022-02-18 14:58:42,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499546752] [2022-02-18 14:58:42,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:42,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-18 14:58:42,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-18 14:58:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-02-18 14:58:42,108 INFO L87 Difference]: Start difference. First operand 216834 states and 655119 transitions. Second operand has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 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) [2022-02-18 14:58:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:45,652 INFO L93 Difference]: Finished difference Result 244796 states and 738617 transitions. [2022-02-18 14:58:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-18 14:58:45,652 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 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 [2022-02-18 14:58:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:46,937 INFO L225 Difference]: With dead ends: 244796 [2022-02-18 14:58:46,938 INFO L226 Difference]: Without dead ends: 244766 [2022-02-18 14:58:46,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3509 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1643, Invalid=8863, Unknown=0, NotChecked=0, Total=10506 [2022-02-18 14:58:46,938 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 693 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:46,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 2570 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:58:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244766 states. [2022-02-18 14:58:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244766 to 236182. [2022-02-18 14:58:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236182 states, 236181 states have (on average 3.026348436157015) internal successors, (714766), 236181 states have internal predecessors, (714766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236182 states to 236182 states and 714766 transitions. [2022-02-18 14:58:54,824 INFO L78 Accepts]: Start accepts. Automaton has 236182 states and 714766 transitions. Word has length 79 [2022-02-18 14:58:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:54,824 INFO L470 AbstractCegarLoop]: Abstraction has 236182 states and 714766 transitions. [2022-02-18 14:58:54,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 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) [2022-02-18 14:58:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 236182 states and 714766 transitions. [2022-02-18 14:58:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:58:55,767 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:55,768 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] [2022-02-18 14:58:55,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:55,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:55,981 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:55,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1332594567, now seen corresponding path program 98 times [2022-02-18 14:58:55,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:55,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871713322] [2022-02-18 14:58:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:55,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:56,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:56,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871713322] [2022-02-18 14:58:56,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871713322] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:56,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528751406] [2022-02-18 14:58:56,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:58:56,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:56,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:56,203 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:56,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-18 14:58:56,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:58:56,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:56,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:58:56,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:56,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:57,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528751406] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:57,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:57,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2022-02-18 14:58:57,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131936296] [2022-02-18 14:58:57,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:57,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:58:57,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:58:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:58:57,218 INFO L87 Difference]: Start difference. First operand 236182 states and 714766 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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) [2022-02-18 14:59:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:01,663 INFO L93 Difference]: Finished difference Result 276005 states and 836099 transitions. [2022-02-18 14:59:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-18 14:59:01,663 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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 [2022-02-18 14:59:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:02,716 INFO L225 Difference]: With dead ends: 276005 [2022-02-18 14:59:02,716 INFO L226 Difference]: Without dead ends: 275921 [2022-02-18 14:59:02,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1362, Invalid=8538, Unknown=0, NotChecked=0, Total=9900 [2022-02-18 14:59:02,717 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 637 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:02,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 3099 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:59:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275921 states. [2022-02-18 14:59:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275921 to 272058. [2022-02-18 14:59:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272058 states, 272057 states have (on average 3.0352205603972697) internal successors, (825753), 272057 states have internal predecessors, (825753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272058 states to 272058 states and 825753 transitions. [2022-02-18 14:59:11,979 INFO L78 Accepts]: Start accepts. Automaton has 272058 states and 825753 transitions. Word has length 79 [2022-02-18 14:59:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:11,979 INFO L470 AbstractCegarLoop]: Abstraction has 272058 states and 825753 transitions. [2022-02-18 14:59:11,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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) [2022-02-18 14:59:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 272058 states and 825753 transitions. [2022-02-18 14:59:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:59:12,816 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:12,816 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] [2022-02-18 14:59:12,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-02-18 14:59:13,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:13,032 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1858806017, now seen corresponding path program 99 times [2022-02-18 14:59:13,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:13,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276558792] [2022-02-18 14:59:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:13,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:13,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:13,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276558792] [2022-02-18 14:59:13,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276558792] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:13,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283744870] [2022-02-18 14:59:13,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:59:13,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:13,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:13,152 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:13,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-18 14:59:13,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-18 14:59:13,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:13,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-18 14:59:13,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:13,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:14,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283744870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:14,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:14,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-02-18 14:59:14,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321756625] [2022-02-18 14:59:14,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:14,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-18 14:59:14,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-18 14:59:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2022-02-18 14:59:14,044 INFO L87 Difference]: Start difference. First operand 272058 states and 825753 transitions. Second operand has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:18,678 INFO L93 Difference]: Finished difference Result 316013 states and 957580 transitions. [2022-02-18 14:59:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-18 14:59:18,678 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have 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 [2022-02-18 14:59:18,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:19,902 INFO L225 Difference]: With dead ends: 316013 [2022-02-18 14:59:19,902 INFO L226 Difference]: Without dead ends: 315983 [2022-02-18 14:59:19,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4698 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2455, Invalid=10427, Unknown=0, NotChecked=0, Total=12882 [2022-02-18 14:59:19,902 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 758 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:19,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 2538 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:59:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315983 states. [2022-02-18 14:59:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315983 to 278146. [2022-02-18 14:59:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278146 states, 278145 states have (on average 3.037318664725233) internal successors, (844815), 278145 states have internal predecessors, (844815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278146 states to 278146 states and 844815 transitions. [2022-02-18 14:59:31,662 INFO L78 Accepts]: Start accepts. Automaton has 278146 states and 844815 transitions. Word has length 79 [2022-02-18 14:59:31,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:31,662 INFO L470 AbstractCegarLoop]: Abstraction has 278146 states and 844815 transitions. [2022-02-18 14:59:31,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 278146 states and 844815 transitions. [2022-02-18 14:59:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:59:32,183 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:32,183 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] [2022-02-18 14:59:32,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-02-18 14:59:32,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-18 14:59:32,383 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1185944259, now seen corresponding path program 100 times [2022-02-18 14:59:32,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:32,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013662238] [2022-02-18 14:59:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:32,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:32,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:32,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013662238] [2022-02-18 14:59:32,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013662238] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:32,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069298061] [2022-02-18 14:59:32,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:59:32,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:32,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:32,526 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:32,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-18 14:59:32,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:59:32,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:32,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-18 14:59:32,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:32,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:33,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069298061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:33,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:33,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2022-02-18 14:59:33,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593406378] [2022-02-18 14:59:33,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:33,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:59:33,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:59:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:59:33,583 INFO L87 Difference]: Start difference. First operand 278146 states and 844815 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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) [2022-02-18 14:59:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:38,453 INFO L93 Difference]: Finished difference Result 386879 states and 1170941 transitions. [2022-02-18 14:59:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-18 14:59:38,454 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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 [2022-02-18 14:59:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:40,397 INFO L225 Difference]: With dead ends: 386879 [2022-02-18 14:59:40,397 INFO L226 Difference]: Without dead ends: 386807 [2022-02-18 14:59:40,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4305 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1924, Invalid=10958, Unknown=0, NotChecked=0, Total=12882 [2022-02-18 14:59:40,398 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 880 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:40,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 2010 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:59:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386807 states. [2022-02-18 14:59:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386807 to 278590. [2022-02-18 14:59:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278590 states, 278589 states have (on average 3.0373632842646336) internal successors, (846176), 278589 states have internal predecessors, (846176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278590 states to 278590 states and 846176 transitions. [2022-02-18 14:59:52,007 INFO L78 Accepts]: Start accepts. Automaton has 278590 states and 846176 transitions. Word has length 79 [2022-02-18 14:59:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:52,007 INFO L470 AbstractCegarLoop]: Abstraction has 278590 states and 846176 transitions. [2022-02-18 14:59:52,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 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) [2022-02-18 14:59:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 278590 states and 846176 transitions. [2022-02-18 14:59:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-18 14:59:53,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:53,080 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] [2022-02-18 14:59:53,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-18 14:59:53,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-18 14:59:53,296 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash 657711439, now seen corresponding path program 101 times [2022-02-18 14:59:53,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:53,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823769204] [2022-02-18 14:59:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:53,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:53,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823769204] [2022-02-18 14:59:53,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823769204] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:53,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812824517] [2022-02-18 14:59:53,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:59:53,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:53,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:53,509 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:53,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-18 14:59:53,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-18 14:59:53,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:53,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-18 14:59:53,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:54,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:54,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812824517] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:54,723 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:54,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 38 [2022-02-18 14:59:54,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397886909] [2022-02-18 14:59:54,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:54,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 14:59:54,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:54,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 14:59:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 14:59:54,724 INFO L87 Difference]: Start difference. First operand 278590 states and 846176 transitions. Second operand has 38 states, 38 states have (on average 3.8421052631578947) internal successors, (146), 38 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) [2022-02-18 14:59:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:59,206 INFO L93 Difference]: Finished difference Result 358418 states and 1079515 transitions. [2022-02-18 14:59:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-18 14:59:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.8421052631578947) internal successors, (146), 38 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 [2022-02-18 14:59:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:01,051 INFO L225 Difference]: With dead ends: 358418 [2022-02-18 15:00:01,051 INFO L226 Difference]: Without dead ends: 358298 [2022-02-18 15:00:01,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1169, Invalid=5971, Unknown=0, NotChecked=0, Total=7140 [2022-02-18 15:00:01,052 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 708 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:01,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 1913 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 15:00:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358298 states. [2022-02-18 15:00:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358298 to 279438. [2022-02-18 15:00:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279438 states, 279437 states have (on average 3.036476916084842) internal successors, (848504), 279437 states have internal predecessors, (848504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279438 states to 279438 states and 848504 transitions. [2022-02-18 15:00:12,150 INFO L78 Accepts]: Start accepts. Automaton has 279438 states and 848504 transitions. Word has length 79 [2022-02-18 15:00:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:12,150 INFO L470 AbstractCegarLoop]: Abstraction has 279438 states and 848504 transitions. [2022-02-18 15:00:12,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.8421052631578947) internal successors, (146), 38 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) [2022-02-18 15:00:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 279438 states and 848504 transitions. [2022-02-18 15:00:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-18 15:00:13,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:13,163 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-18 15:00:13,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:13,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:13,367 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1319017343, now seen corresponding path program 102 times [2022-02-18 15:00:13,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:13,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307032592] [2022-02-18 15:00:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:13,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:13,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:13,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307032592] [2022-02-18 15:00:13,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307032592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:13,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819883014] [2022-02-18 15:00:13,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 15:00:13,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:13,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:13,535 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:13,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-18 15:00:13,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 15:00:13,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:13,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 15:00:13,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:13,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:14,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819883014] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:14,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:14,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 40 [2022-02-18 15:00:14,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463862773] [2022-02-18 15:00:14,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:14,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 15:00:14,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:14,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 15:00:14,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 15:00:14,341 INFO L87 Difference]: Start difference. First operand 279438 states and 848504 transitions. Second operand has 40 states, 40 states have (on average 4.55) internal successors, (182), 40 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:22,017 INFO L93 Difference]: Finished difference Result 339155 states and 1023786 transitions. [2022-02-18 15:00:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-02-18 15:00:22,017 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.55) internal successors, (182), 40 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-18 15:00:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:23,634 INFO L225 Difference]: With dead ends: 339155 [2022-02-18 15:00:23,634 INFO L226 Difference]: Without dead ends: 339080 [2022-02-18 15:00:23,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17172 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7715, Invalid=39591, Unknown=0, NotChecked=0, Total=47306 [2022-02-18 15:00:23,636 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 2064 mSDsluCounter, 4330 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:23,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2064 Valid, 4436 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 15:00:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339080 states. [2022-02-18 15:00:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339080 to 282652. [2022-02-18 15:00:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282652 states, 282651 states have (on average 3.0356800435873215) internal successors, (858038), 282651 states have internal predecessors, (858038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282652 states to 282652 states and 858038 transitions. [2022-02-18 15:00:34,793 INFO L78 Accepts]: Start accepts. Automaton has 282652 states and 858038 transitions. Word has length 84 [2022-02-18 15:00:34,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:34,793 INFO L470 AbstractCegarLoop]: Abstraction has 282652 states and 858038 transitions. [2022-02-18 15:00:34,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.55) internal successors, (182), 40 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 282652 states and 858038 transitions. [2022-02-18 15:00:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-18 15:00:36,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:36,190 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-18 15:00:36,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:36,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:36,403 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash 59278313, now seen corresponding path program 103 times [2022-02-18 15:00:36,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:36,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576869938] [2022-02-18 15:00:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:36,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:36,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:36,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576869938] [2022-02-18 15:00:36,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576869938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:36,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131232365] [2022-02-18 15:00:36,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 15:00:36,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:36,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:36,692 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:36,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-18 15:00:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:36,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-18 15:00:36,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:37,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:38,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131232365] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:38,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:38,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 15] total 41 [2022-02-18 15:00:38,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171430772] [2022-02-18 15:00:38,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:38,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 15:00:38,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 15:00:38,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 15:00:38,282 INFO L87 Difference]: Start difference. First operand 282652 states and 858038 transitions. Second operand has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:43,458 INFO L93 Difference]: Finished difference Result 323469 states and 980018 transitions. [2022-02-18 15:00:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-18 15:00:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-18 15:00:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:44,754 INFO L225 Difference]: With dead ends: 323469 [2022-02-18 15:00:44,754 INFO L226 Difference]: Without dead ends: 323394 [2022-02-18 15:00:44,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4984 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3168, Invalid=12582, Unknown=0, NotChecked=0, Total=15750 [2022-02-18 15:00:44,755 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 873 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:44,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 3741 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 15:00:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323394 states. [2022-02-18 15:00:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323394 to 282272. [2022-02-18 15:00:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282272 states, 282271 states have (on average 3.0357528757824928) internal successors, (856905), 282271 states have internal predecessors, (856905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282272 states to 282272 states and 856905 transitions. [2022-02-18 15:00:55,215 INFO L78 Accepts]: Start accepts. Automaton has 282272 states and 856905 transitions. Word has length 84 [2022-02-18 15:00:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:55,215 INFO L470 AbstractCegarLoop]: Abstraction has 282272 states and 856905 transitions. [2022-02-18 15:00:55,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 282272 states and 856905 transitions. [2022-02-18 15:00:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-18 15:00:56,236 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:56,236 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-18 15:00:56,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:56,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-02-18 15:00:56,436 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:56,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1216501669, now seen corresponding path program 104 times [2022-02-18 15:00:56,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:56,437 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973244343] [2022-02-18 15:00:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:56,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:56,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:56,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973244343] [2022-02-18 15:00:56,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973244343] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:56,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220613870] [2022-02-18 15:00:56,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 15:00:56,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:56,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:56,648 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:56,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-18 15:00:56,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 15:00:56,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:56,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-18 15:00:56,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:57,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:57,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220613870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:57,675 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:57,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 42 [2022-02-18 15:00:57,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978644220] [2022-02-18 15:00:57,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:57,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-18 15:00:57,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-18 15:00:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2022-02-18 15:00:57,676 INFO L87 Difference]: Start difference. First operand 282272 states and 856905 transitions. Second operand has 42 states, 42 states have (on average 4.595238095238095) internal successors, (193), 42 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)