/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-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 15:58:41,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 15:58:41,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 15:58:41,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 15:58:41,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 15:58:41,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 15:58:41,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 15:58:41,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 15:58:41,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 15:58:41,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 15:58:41,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 15:58:41,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 15:58:41,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 15:58:41,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 15:58:41,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 15:58:41,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 15:58:41,736 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 15:58:41,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 15:58:41,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 15:58:41,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 15:58:41,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 15:58:41,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 15:58:41,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 15:58:41,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 15:58:41,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 15:58:41,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:58:41,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 15:58:41,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 15:58:41,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 15:58:41,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 15:58:41,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 15:58:41,739 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 15:58:41,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 15:58:41,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 15:58:41,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 15:58:41,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 15:58:41,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 15:58:41,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 15:58:41,970 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 15:58:41,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-01 15:58:42,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427d01879/8437be237f414d5b80f2f9b11dfa66f0/FLAG0df0af07e [2022-03-01 15:58:42,326 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 15:58:42,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-01 15:58:42,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427d01879/8437be237f414d5b80f2f9b11dfa66f0/FLAG0df0af07e [2022-03-01 15:58:42,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427d01879/8437be237f414d5b80f2f9b11dfa66f0 [2022-03-01 15:58:42,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 15:58:42,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 15:58:42,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 15:58:42,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 15:58:42,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 15:58:42,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:42,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a4dfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42, skipping insertion in model container [2022-03-01 15:58:42,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:42,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 15:58:42,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 15:58:42,957 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-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-03-01 15:58:42,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:58:42,964 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 15:58:42,980 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-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-03-01 15:58:42,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:58:42,989 INFO L208 MainTranslator]: Completed translation [2022-03-01 15:58:42,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42 WrapperNode [2022-03-01 15:58:42,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 15:58:42,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 15:58:42,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 15:58:42,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 15:58:42,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,011 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-03-01 15:58:43,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 15:58:43,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 15:58:43,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 15:58:43,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 15:58:43,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 15:58:43,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 15:58:43,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 15:58:43,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 15:58:43,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (1/1) ... [2022-03-01 15:58:43,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:58:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:43,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 15:58:43,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 15:58:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 15:58:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 15:58:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 15:58:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 15:58:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 15:58:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 15:58:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 15:58:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 15:58:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 15:58:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 15:58:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 15:58:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 15:58:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 15:58:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 15:58:43,105 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 15:58:43,172 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 15:58:43,174 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 15:58:43,305 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 15:58:43,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 15:58:43,333 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 15:58:43,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:58:43 BoogieIcfgContainer [2022-03-01 15:58:43,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 15:58:43,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 15:58:43,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 15:58:43,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 15:58:43,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 03:58:42" (1/3) ... [2022-03-01 15:58:43,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c97f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:58:43, skipping insertion in model container [2022-03-01 15:58:43,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:58:42" (2/3) ... [2022-03-01 15:58:43,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c97f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:58:43, skipping insertion in model container [2022-03-01 15:58:43,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:58:43" (3/3) ... [2022-03-01 15:58:43,359 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-01 15:58:43,363 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 15:58:43,363 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 15:58:43,363 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 15:58:43,363 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 15:58:43,404 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,404 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,404 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,405 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,405 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,405 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,407 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,407 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,407 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,408 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,408 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,408 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,408 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,409 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,409 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,410 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,410 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,411 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,411 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,411 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,411 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,411 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,412 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,422 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,423 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:58:43,426 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 15:58:43,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 15:58:43,459 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 15:58:43,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 15:58:43,467 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-03-01 15:58:43,509 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-01 15:58:43,523 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:43,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:43,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1161800666, now seen corresponding path program 1 times [2022-03-01 15:58:43,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:43,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565735703] [2022-03-01 15:58:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:43,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:43,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565735703] [2022-03-01 15:58:43,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565735703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:58:43,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:58:43,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 15:58:43,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595662923] [2022-03-01 15:58:43,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:58:43,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 15:58:43,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 15:58:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:58:43,795 INFO L87 Difference]: Start difference. First operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:43,835 INFO L93 Difference]: Finished difference Result 330 states and 780 transitions. [2022-03-01 15:58:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 15:58:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-03-01 15:58:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:43,853 INFO L225 Difference]: With dead ends: 330 [2022-03-01 15:58:43,854 INFO L226 Difference]: Without dead ends: 328 [2022-03-01 15:58:43,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:58:43,857 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:43,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:58:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-01 15:58:43,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-03-01 15:58:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.379204892966361) internal successors, (778), 327 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 778 transitions. [2022-03-01 15:58:43,897 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 778 transitions. Word has length 60 [2022-03-01 15:58:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:43,898 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 778 transitions. [2022-03-01 15:58:43,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 778 transitions. [2022-03-01 15:58:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-01 15:58:43,900 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:43,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:43,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 15:58:43,901 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash 651266489, now seen corresponding path program 1 times [2022-03-01 15:58:43,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:43,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753366724] [2022-03-01 15:58:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:44,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:44,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753366724] [2022-03-01 15:58:44,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753366724] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:58:44,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:58:44,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:58:44,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167441856] [2022-03-01 15:58:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:58:44,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:58:44,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:58:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:58:44,057 INFO L87 Difference]: Start difference. First operand 328 states and 778 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:44,113 INFO L93 Difference]: Finished difference Result 448 states and 1090 transitions. [2022-03-01 15:58:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:58:44,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-03-01 15:58:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:44,116 INFO L225 Difference]: With dead ends: 448 [2022-03-01 15:58:44,116 INFO L226 Difference]: Without dead ends: 448 [2022-03-01 15:58:44,116 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 [2022-03-01 15:58:44,117 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 147 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:44,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 135 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:58:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-03-01 15:58:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 358. [2022-03-01 15:58:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.3977591036414565) internal successors, (856), 357 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 856 transitions. [2022-03-01 15:58:44,132 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 856 transitions. Word has length 60 [2022-03-01 15:58:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:44,132 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 856 transitions. [2022-03-01 15:58:44,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 856 transitions. [2022-03-01 15:58:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:58:44,135 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:44,135 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] [2022-03-01 15:58:44,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 15:58:44,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash -72683847, now seen corresponding path program 1 times [2022-03-01 15:58:44,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:44,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198616619] [2022-03-01 15:58:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:44,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:44,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:44,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198616619] [2022-03-01 15:58:44,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198616619] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:44,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967951125] [2022-03-01 15:58:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:44,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:44,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:44,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:44,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 15:58:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:44,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-01 15:58:44,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:44,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:44,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967951125] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:44,698 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:58:44,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-03-01 15:58:44,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015959090] [2022-03-01 15:58:44,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:58:44,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 15:58:44,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 15:58:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:58:44,701 INFO L87 Difference]: Start difference. First operand 358 states and 856 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:44,741 INFO L93 Difference]: Finished difference Result 425 states and 1038 transitions. [2022-03-01 15:58:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 15:58:44,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-01 15:58:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:44,745 INFO L225 Difference]: With dead ends: 425 [2022-03-01 15:58:44,745 INFO L226 Difference]: Without dead ends: 425 [2022-03-01 15:58:44,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:58:44,749 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:44,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 150 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:58:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-01 15:58:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-03-01 15:58:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.423469387755102) internal successors, (950), 392 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 950 transitions. [2022-03-01 15:58:44,775 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 950 transitions. Word has length 65 [2022-03-01 15:58:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:44,775 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 950 transitions. [2022-03-01 15:58:44,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 950 transitions. [2022-03-01 15:58:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:58:44,777 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:44,777 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] [2022-03-01 15:58:44,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 15:58:44,994 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 [2022-03-01 15:58:44,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:44,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2097537209, now seen corresponding path program 2 times [2022-03-01 15:58:44,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:44,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565172369] [2022-03-01 15:58:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:44,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:45,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:45,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565172369] [2022-03-01 15:58:45,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565172369] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:45,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506955581] [2022-03-01 15:58:45,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:58:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:45,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:45,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:45,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 15:58:45,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-01 15:58:45,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:45,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:58:45,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:58:45,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:58:45,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506955581] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:58:45,402 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:58:45,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-03-01 15:58:45,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693465197] [2022-03-01 15:58:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:58:45,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:58:45,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:58:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-01 15:58:45,406 INFO L87 Difference]: Start difference. First operand 393 states and 950 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:45,522 INFO L93 Difference]: Finished difference Result 479 states and 1182 transitions. [2022-03-01 15:58:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 15:58:45,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-01 15:58:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:45,525 INFO L225 Difference]: With dead ends: 479 [2022-03-01 15:58:45,525 INFO L226 Difference]: Without dead ends: 479 [2022-03-01 15:58:45,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:58:45,528 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 112 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:45,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 166 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:58:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-03-01 15:58:45,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 401. [2022-03-01 15:58:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.43) internal successors, (972), 400 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 972 transitions. [2022-03-01 15:58:45,539 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 972 transitions. Word has length 65 [2022-03-01 15:58:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:45,541 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 972 transitions. [2022-03-01 15:58:45,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 972 transitions. [2022-03-01 15:58:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:58:45,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:45,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:45,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:45,749 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 [2022-03-01 15:58:45,749 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1804809499, now seen corresponding path program 1 times [2022-03-01 15:58:45,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:45,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596561117] [2022-03-01 15:58:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:45,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:45,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596561117] [2022-03-01 15:58:45,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596561117] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:45,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750774789] [2022-03-01 15:58:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:45,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:45,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 15:58:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:45,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 15:58:45,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:46,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:46,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750774789] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:46,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:46,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-03-01 15:58:46,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445542632] [2022-03-01 15:58:46,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:46,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:58:46,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:58:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:58:46,720 INFO L87 Difference]: Start difference. First operand 401 states and 972 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 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) [2022-03-01 15:58:47,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:47,679 INFO L93 Difference]: Finished difference Result 2203 states and 5648 transitions. [2022-03-01 15:58:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 15:58:47,680 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 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 67 [2022-03-01 15:58:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:47,688 INFO L225 Difference]: With dead ends: 2203 [2022-03-01 15:58:47,689 INFO L226 Difference]: Without dead ends: 1933 [2022-03-01 15:58:47,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=431, Invalid=1051, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:58:47,690 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 584 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:47,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1302 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:58:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2022-03-01 15:58:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 702. [2022-03-01 15:58:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 2.637660485021398) internal successors, (1849), 701 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1849 transitions. [2022-03-01 15:58:47,716 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1849 transitions. Word has length 67 [2022-03-01 15:58:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:47,718 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1849 transitions. [2022-03-01 15:58:47,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 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) [2022-03-01 15:58:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1849 transitions. [2022-03-01 15:58:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:58:47,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:47,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:47,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-01 15:58:47,936 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 [2022-03-01 15:58:47,937 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2075173441, now seen corresponding path program 2 times [2022-03-01 15:58:47,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:47,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753950283] [2022-03-01 15:58:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:48,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:48,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753950283] [2022-03-01 15:58:48,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753950283] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:48,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417644517] [2022-03-01 15:58:48,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:58:48,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:48,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:48,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:48,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 15:58:48,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:58:48,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:48,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 15:58:48,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:48,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:48,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417644517] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:48,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:48,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-03-01 15:58:48,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612313928] [2022-03-01 15:58:48,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:48,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 15:58:48,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 15:58:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:58:48,554 INFO L87 Difference]: Start difference. First operand 702 states and 1849 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:48,717 INFO L93 Difference]: Finished difference Result 917 states and 2371 transitions. [2022-03-01 15:58:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:58:48,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:58:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:48,722 INFO L225 Difference]: With dead ends: 917 [2022-03-01 15:58:48,722 INFO L226 Difference]: Without dead ends: 887 [2022-03-01 15:58:48,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:58:48,722 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 70 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:48,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 674 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:58:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-03-01 15:58:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 643. [2022-03-01 15:58:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.587227414330218) internal successors, (1661), 642 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1661 transitions. [2022-03-01 15:58:48,737 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1661 transitions. Word has length 67 [2022-03-01 15:58:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:48,737 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1661 transitions. [2022-03-01 15:58:48,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1661 transitions. [2022-03-01 15:58:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:58:48,738 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:48,738 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:48,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-01 15:58:48,954 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 [2022-03-01 15:58:48,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash -145870821, now seen corresponding path program 3 times [2022-03-01 15:58:48,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:48,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218008334] [2022-03-01 15:58:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:49,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:49,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218008334] [2022-03-01 15:58:49,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218008334] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:49,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485025337] [2022-03-01 15:58:49,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:58:49,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:49,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:49,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:49,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 15:58:49,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:58:49,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:49,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:58:49,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:49,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:49,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485025337] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:49,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:49,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-01 15:58:49,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128684286] [2022-03-01 15:58:49,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:49,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:58:49,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:58:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:58:49,568 INFO L87 Difference]: Start difference. First operand 643 states and 1661 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:49,906 INFO L93 Difference]: Finished difference Result 1092 states and 2851 transitions. [2022-03-01 15:58:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:58:49,906 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 15:58:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:49,911 INFO L225 Difference]: With dead ends: 1092 [2022-03-01 15:58:49,911 INFO L226 Difference]: Without dead ends: 1092 [2022-03-01 15:58:49,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-03-01 15:58:49,912 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 427 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:49,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 886 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:58:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-03-01 15:58:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 726. [2022-03-01 15:58:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 2.613793103448276) internal successors, (1895), 725 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) [2022-03-01 15:58:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1895 transitions. [2022-03-01 15:58:49,929 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1895 transitions. Word has length 72 [2022-03-01 15:58:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:49,929 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 1895 transitions. [2022-03-01 15:58:49,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1895 transitions. [2022-03-01 15:58:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:58:49,931 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:49,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:49,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:50,148 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 [2022-03-01 15:58:50,148 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:50,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1917541861, now seen corresponding path program 4 times [2022-03-01 15:58:50,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:50,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409218582] [2022-03-01 15:58:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:50,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:50,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409218582] [2022-03-01 15:58:50,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409218582] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:50,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343474444] [2022-03-01 15:58:50,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:58:50,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:50,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:50,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 15:58:50,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:58:50,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:50,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:58:50,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:50,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:51,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343474444] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:51,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:51,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-03-01 15:58:51,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876108789] [2022-03-01 15:58:51,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:51,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:58:51,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:58:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:58:51,111 INFO L87 Difference]: Start difference. First operand 726 states and 1895 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:52,244 INFO L93 Difference]: Finished difference Result 2030 states and 5196 transitions. [2022-03-01 15:58:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 15:58:52,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 15:58:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:52,252 INFO L225 Difference]: With dead ends: 2030 [2022-03-01 15:58:52,252 INFO L226 Difference]: Without dead ends: 2030 [2022-03-01 15:58:52,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=507, Invalid=1655, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:58:52,253 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 569 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:52,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1148 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:58:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2022-03-01 15:58:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 742. [2022-03-01 15:58:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 2.6167341430499325) internal successors, (1939), 741 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1939 transitions. [2022-03-01 15:58:52,276 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1939 transitions. Word has length 72 [2022-03-01 15:58:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:52,277 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1939 transitions. [2022-03-01 15:58:52,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1939 transitions. [2022-03-01 15:58:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:58:52,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:52,278 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:52,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:52,491 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 [2022-03-01 15:58:52,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash -899018853, now seen corresponding path program 5 times [2022-03-01 15:58:52,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:52,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075363959] [2022-03-01 15:58:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:52,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:52,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075363959] [2022-03-01 15:58:52,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075363959] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:52,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830655243] [2022-03-01 15:58:52,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:58:52,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:52,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:52,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 15:58:52,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:58:52,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:52,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:58:52,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:52,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:29,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830655243] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:29,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:29,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:59:29,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716234791] [2022-03-01 15:59:29,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:29,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:59:29,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:59:29,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:59:29,410 INFO L87 Difference]: Start difference. First operand 742 states and 1939 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:34,551 INFO L93 Difference]: Finished difference Result 1870 states and 4875 transitions. [2022-03-01 15:59:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-01 15:59:34,551 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have 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 [2022-03-01 15:59:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:34,558 INFO L225 Difference]: With dead ends: 1870 [2022-03-01 15:59:34,558 INFO L226 Difference]: Without dead ends: 1870 [2022-03-01 15:59:34,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1326, Invalid=5480, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 15:59:34,560 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 605 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:34,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1736 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:59:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-03-01 15:59:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 750. [2022-03-01 15:59:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 2.628838451268358) internal successors, (1969), 749 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1969 transitions. [2022-03-01 15:59:34,579 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1969 transitions. Word has length 72 [2022-03-01 15:59:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:34,579 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1969 transitions. [2022-03-01 15:59:34,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1969 transitions. [2022-03-01 15:59:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:34,580 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:34,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:34,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:34,799 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 [2022-03-01 15:59:34,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:34,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1016371871, now seen corresponding path program 6 times [2022-03-01 15:59:34,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:34,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688333994] [2022-03-01 15:59:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:34,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:34,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:34,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688333994] [2022-03-01 15:59:34,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688333994] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:34,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599294163] [2022-03-01 15:59:34,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:59:34,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:34,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:34,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:34,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 15:59:34,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:59:34,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:34,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:59:34,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:35,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:35,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599294163] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:35,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:35,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-01 15:59:35,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011630244] [2022-03-01 15:59:35,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:35,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:59:35,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:59:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:59:35,715 INFO L87 Difference]: Start difference. First operand 750 states and 1969 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 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) [2022-03-01 15:59:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:37,754 INFO L93 Difference]: Finished difference Result 1558 states and 4102 transitions. [2022-03-01 15:59:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:59:37,755 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 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 72 [2022-03-01 15:59:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:37,760 INFO L225 Difference]: With dead ends: 1558 [2022-03-01 15:59:37,760 INFO L226 Difference]: Without dead ends: 1510 [2022-03-01 15:59:37,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=643, Invalid=2437, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 15:59:37,761 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 580 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:37,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1065 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:59:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-03-01 15:59:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 942. [2022-03-01 15:59:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.6790648246546227) internal successors, (2521), 941 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2521 transitions. [2022-03-01 15:59:37,781 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2521 transitions. Word has length 72 [2022-03-01 15:59:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:37,781 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2521 transitions. [2022-03-01 15:59:37,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 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) [2022-03-01 15:59:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2521 transitions. [2022-03-01 15:59:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:37,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:37,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:37,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:37,999 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 [2022-03-01 15:59:37,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1259204635, now seen corresponding path program 7 times [2022-03-01 15:59:38,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:38,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616167754] [2022-03-01 15:59:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:38,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:38,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616167754] [2022-03-01 15:59:38,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616167754] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:38,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303500278] [2022-03-01 15:59:38,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:59:38,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:38,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:38,130 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:38,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 15:59:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:38,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 15:59:38,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:38,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:38,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303500278] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:38,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:38,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2022-03-01 15:59:38,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987065929] [2022-03-01 15:59:38,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:38,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:59:38,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:59:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:59:38,648 INFO L87 Difference]: Start difference. First operand 942 states and 2521 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:40,371 INFO L93 Difference]: Finished difference Result 1966 states and 5300 transitions. [2022-03-01 15:59:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 15:59:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 15:59:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:40,378 INFO L225 Difference]: With dead ends: 1966 [2022-03-01 15:59:40,378 INFO L226 Difference]: Without dead ends: 1966 [2022-03-01 15:59:40,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=702, Invalid=4128, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 15:59:40,380 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 433 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:40,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1741 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:59:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-03-01 15:59:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 966. [2022-03-01 15:59:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 2.6808290155440413) internal successors, (2587), 965 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2587 transitions. [2022-03-01 15:59:40,400 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2587 transitions. Word has length 72 [2022-03-01 15:59:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:40,400 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 2587 transitions. [2022-03-01 15:59:40,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2587 transitions. [2022-03-01 15:59:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:40,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:40,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:40,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:40,618 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 [2022-03-01 15:59:40,619 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2017239653, now seen corresponding path program 8 times [2022-03-01 15:59:40,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:40,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967478223] [2022-03-01 15:59:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:40,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:40,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:40,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967478223] [2022-03-01 15:59:40,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967478223] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:40,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553477043] [2022-03-01 15:59:40,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:59:40,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:40,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:40,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:40,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 15:59:40,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:59:40,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:40,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:59:40,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:41,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:41,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553477043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:41,422 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:41,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-03-01 15:59:41,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535344377] [2022-03-01 15:59:41,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:41,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:59:41,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:59:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:59:41,424 INFO L87 Difference]: Start difference. First operand 966 states and 2587 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:44,588 INFO L93 Difference]: Finished difference Result 2834 states and 7474 transitions. [2022-03-01 15:59:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 15:59:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 15:59:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:44,598 INFO L225 Difference]: With dead ends: 2834 [2022-03-01 15:59:44,598 INFO L226 Difference]: Without dead ends: 2834 [2022-03-01 15:59:44,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1010, Invalid=3820, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 15:59:44,599 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 567 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:44,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 1462 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:59:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-03-01 15:59:44,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1078. [2022-03-01 15:59:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 2.725162488393686) internal successors, (2935), 1077 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2935 transitions. [2022-03-01 15:59:44,627 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2935 transitions. Word has length 72 [2022-03-01 15:59:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:44,627 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2935 transitions. [2022-03-01 15:59:44,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2935 transitions. [2022-03-01 15:59:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:44,629 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:44,629 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:44,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:44,842 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 [2022-03-01 15:59:44,843 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:44,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:44,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1902016859, now seen corresponding path program 9 times [2022-03-01 15:59:44,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:44,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457661788] [2022-03-01 15:59:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:44,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:44,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:44,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457661788] [2022-03-01 15:59:44,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457661788] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:44,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186760869] [2022-03-01 15:59:44,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:59:44,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:44,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:44,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:44,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 15:59:45,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:59:45,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:45,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:59:45,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:45,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:45,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186760869] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:45,686 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:45,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-01 15:59:45,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528217972] [2022-03-01 15:59:45,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:45,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:59:45,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:59:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:59:45,687 INFO L87 Difference]: Start difference. First operand 1078 states and 2935 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2022-03-01 15:59:47,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:47,782 INFO L93 Difference]: Finished difference Result 3042 states and 8046 transitions. [2022-03-01 15:59:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 15:59:47,782 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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 72 [2022-03-01 15:59:47,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:47,792 INFO L225 Difference]: With dead ends: 3042 [2022-03-01 15:59:47,792 INFO L226 Difference]: Without dead ends: 3042 [2022-03-01 15:59:47,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1181, Invalid=4519, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:59:47,794 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 672 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:47,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1235 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:59:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2022-03-01 15:59:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1182. [2022-03-01 15:59:47,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 2.754445385266723) internal successors, (3253), 1181 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 3253 transitions. [2022-03-01 15:59:47,823 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 3253 transitions. Word has length 72 [2022-03-01 15:59:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:47,823 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 3253 transitions. [2022-03-01 15:59:47,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2022-03-01 15:59:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 3253 transitions. [2022-03-01 15:59:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:47,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:47,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:47,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:48,039 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 [2022-03-01 15:59:48,039 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:48,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:48,040 INFO L85 PathProgramCache]: Analyzing trace with hash -477559713, now seen corresponding path program 10 times [2022-03-01 15:59:48,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:48,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495316171] [2022-03-01 15:59:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:48,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:48,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495316171] [2022-03-01 15:59:48,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495316171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:48,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487097854] [2022-03-01 15:59:48,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:59:48,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:48,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:48,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:48,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 15:59:48,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:59:48,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:48,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:59:48,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:48,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:48,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487097854] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:48,887 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:48,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-03-01 15:59:48,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819470735] [2022-03-01 15:59:48,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:48,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:59:48,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:59:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:59:48,888 INFO L87 Difference]: Start difference. First operand 1182 states and 3253 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:50,736 INFO L93 Difference]: Finished difference Result 1947 states and 5342 transitions. [2022-03-01 15:59:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 15:59:50,737 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have 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 [2022-03-01 15:59:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:50,741 INFO L225 Difference]: With dead ends: 1947 [2022-03-01 15:59:50,741 INFO L226 Difference]: Without dead ends: 1899 [2022-03-01 15:59:50,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=692, Invalid=2500, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 15:59:50,742 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 426 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:50,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1220 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:59:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-03-01 15:59:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1234. [2022-03-01 15:59:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.7607461476074615) internal successors, (3404), 1233 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3404 transitions. [2022-03-01 15:59:50,763 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3404 transitions. Word has length 72 [2022-03-01 15:59:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:50,763 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 3404 transitions. [2022-03-01 15:59:50,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3404 transitions. [2022-03-01 15:59:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:50,765 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:50,765 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:50,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:50,982 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 [2022-03-01 15:59:50,982 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1924749117, now seen corresponding path program 11 times [2022-03-01 15:59:50,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:50,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943641933] [2022-03-01 15:59:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:50,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:51,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:51,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943641933] [2022-03-01 15:59:51,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943641933] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:51,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796526103] [2022-03-01 15:59:51,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:59:51,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:51,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:51,076 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:51,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 15:59:51,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:59:51,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:51,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 15:59:51,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:51,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:51,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796526103] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:51,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:51,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-03-01 15:59:51,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703569336] [2022-03-01 15:59:51,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:51,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:59:51,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:51,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:59:51,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:59:51,649 INFO L87 Difference]: Start difference. First operand 1234 states and 3404 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:52,734 INFO L93 Difference]: Finished difference Result 1825 states and 4913 transitions. [2022-03-01 15:59:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 15:59:52,734 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2022-03-01 15:59:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:52,738 INFO L225 Difference]: With dead ends: 1825 [2022-03-01 15:59:52,738 INFO L226 Difference]: Without dead ends: 1789 [2022-03-01 15:59:52,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=540, Invalid=2322, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 15:59:52,740 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 486 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:52,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1182 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:59:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2022-03-01 15:59:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1234. [2022-03-01 15:59:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.75750202757502) internal successors, (3400), 1233 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3400 transitions. [2022-03-01 15:59:52,760 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3400 transitions. Word has length 72 [2022-03-01 15:59:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:52,760 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 3400 transitions. [2022-03-01 15:59:52,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3400 transitions. [2022-03-01 15:59:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:52,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:52,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:52,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:52,978 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 [2022-03-01 15:59:52,978 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:52,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1528466691, now seen corresponding path program 12 times [2022-03-01 15:59:52,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:52,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609538775] [2022-03-01 15:59:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:52,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:53,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:53,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609538775] [2022-03-01 15:59:53,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609538775] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:53,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082329748] [2022-03-01 15:59:53,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:59:53,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:53,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:53,067 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:53,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 15:59:53,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:59:53,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:53,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 15:59:53,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:53,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:53,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082329748] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:53,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:53,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2022-03-01 15:59:53,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030318958] [2022-03-01 15:59:53,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:53,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:59:53,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:59:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:59:53,624 INFO L87 Difference]: Start difference. First operand 1234 states and 3400 transitions. Second operand has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:56,209 INFO L93 Difference]: Finished difference Result 3500 states and 9395 transitions. [2022-03-01 15:59:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-01 15:59:56,210 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 15:59:56,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:56,216 INFO L225 Difference]: With dead ends: 3500 [2022-03-01 15:59:56,216 INFO L226 Difference]: Without dead ends: 3398 [2022-03-01 15:59:56,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1888 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=883, Invalid=5437, Unknown=0, NotChecked=0, Total=6320 [2022-03-01 15:59:56,218 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 423 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:56,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 2139 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:59:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-03-01 15:59:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1538. [2022-03-01 15:59:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 2.810670136629798) internal successors, (4320), 1537 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 4320 transitions. [2022-03-01 15:59:56,248 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 4320 transitions. Word has length 72 [2022-03-01 15:59:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:56,249 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 4320 transitions. [2022-03-01 15:59:56,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 4320 transitions. [2022-03-01 15:59:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:56,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:56,251 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:56,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:56,463 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 [2022-03-01 15:59:56,463 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash -208297657, now seen corresponding path program 13 times [2022-03-01 15:59:56,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:56,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672640402] [2022-03-01 15:59:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:56,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:56,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:56,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672640402] [2022-03-01 15:59:56,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672640402] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:56,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247448244] [2022-03-01 15:59:56,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:59:56,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:56,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:56,568 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:56,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 15:59:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:59:56,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:56,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:57,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247448244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:57,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:57,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-03-01 15:59:57,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82146425] [2022-03-01 15:59:57,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:57,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:59:57,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:59:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:59:57,372 INFO L87 Difference]: Start difference. First operand 1538 states and 4320 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:58,464 INFO L93 Difference]: Finished difference Result 2407 states and 6727 transitions. [2022-03-01 15:59:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 15:59:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have 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 [2022-03-01 15:59:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:58,470 INFO L225 Difference]: With dead ends: 2407 [2022-03-01 15:59:58,470 INFO L226 Difference]: Without dead ends: 2359 [2022-03-01 15:59:58,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:59:58,472 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 326 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:58,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1330 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:59:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-03-01 15:59:58,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1490. [2022-03-01 15:59:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 2.80456682337139) internal successors, (4176), 1489 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 4176 transitions. [2022-03-01 15:59:58,498 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 4176 transitions. Word has length 72 [2022-03-01 15:59:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:58,498 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 4176 transitions. [2022-03-01 15:59:58,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 4176 transitions. [2022-03-01 15:59:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:59:58,501 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:58,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:59:58,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:58,715 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 [2022-03-01 15:59:58,715 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:58,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2100956123, now seen corresponding path program 14 times [2022-03-01 15:59:58,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:58,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390395069] [2022-03-01 15:59:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:58,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:58,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390395069] [2022-03-01 15:59:58,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390395069] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:58,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562499713] [2022-03-01 15:59:58,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:59:58,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:58,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:58,812 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:58,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 15:59:58,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:59:58,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:58,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:59:58,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:59,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:59,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562499713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:59,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:59,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-03-01 15:59:59,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337514208] [2022-03-01 15:59:59,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:59,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:59:59,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:59,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:59:59,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:59:59,613 INFO L87 Difference]: Start difference. First operand 1490 states and 4176 transitions. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:00,749 INFO L93 Difference]: Finished difference Result 2267 states and 6290 transitions. [2022-03-01 16:00:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:00:00,749 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 16:00:00,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:00,754 INFO L225 Difference]: With dead ends: 2267 [2022-03-01 16:00:00,754 INFO L226 Difference]: Without dead ends: 2183 [2022-03-01 16:00:00,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:00:00,755 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 268 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:00,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1049 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:00:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2022-03-01 16:00:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 1558. [2022-03-01 16:00:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 2.7996146435452793) internal successors, (4359), 1557 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 4359 transitions. [2022-03-01 16:00:00,780 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 4359 transitions. Word has length 72 [2022-03-01 16:00:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:00,780 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 4359 transitions. [2022-03-01 16:00:00,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 4359 transitions. [2022-03-01 16:00:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:00,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:00,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:00,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:00,999 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 [2022-03-01 16:00:00,999 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:01,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:01,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1872496129, now seen corresponding path program 15 times [2022-03-01 16:00:01,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:01,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126728942] [2022-03-01 16:00:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:01,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:01,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:01,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126728942] [2022-03-01 16:00:01,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126728942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:01,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497780696] [2022-03-01 16:00:01,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:00:01,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:01,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:01,198 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:01,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 16:00:01,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:00:01,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:01,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:00:01,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:01,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:01,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497780696] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:01,970 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:01,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-03-01 16:00:01,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770624916] [2022-03-01 16:00:01,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:01,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:00:01,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:00:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:00:01,971 INFO L87 Difference]: Start difference. First operand 1558 states and 4359 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 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) [2022-03-01 16:00:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:02,837 INFO L93 Difference]: Finished difference Result 3244 states and 8812 transitions. [2022-03-01 16:00:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:00:02,838 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 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 72 [2022-03-01 16:00:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:02,844 INFO L225 Difference]: With dead ends: 3244 [2022-03-01 16:00:02,845 INFO L226 Difference]: Without dead ends: 3244 [2022-03-01 16:00:02,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=475, Invalid=1417, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:00:02,846 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 460 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:02,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1317 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:00:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2022-03-01 16:00:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1758. [2022-03-01 16:00:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1757 states have (on average 2.844052361980649) internal successors, (4997), 1757 states have internal predecessors, (4997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 4997 transitions. [2022-03-01 16:00:02,885 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 4997 transitions. Word has length 72 [2022-03-01 16:00:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:02,886 INFO L470 AbstractCegarLoop]: Abstraction has 1758 states and 4997 transitions. [2022-03-01 16:00:02,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 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) [2022-03-01 16:00:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 4997 transitions. [2022-03-01 16:00:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:02,889 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:02,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:02,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:03,108 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 [2022-03-01 16:00:03,108 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 42894595, now seen corresponding path program 16 times [2022-03-01 16:00:03,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:03,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691392753] [2022-03-01 16:00:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:03,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:03,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691392753] [2022-03-01 16:00:03,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691392753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:03,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283857028] [2022-03-01 16:00:03,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:00:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:03,234 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:03,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 16:00:03,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:00:03,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:03,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:00:03,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:03,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:04,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283857028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:04,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:04,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-01 16:00:04,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383989899] [2022-03-01 16:00:04,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:04,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 16:00:04,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 16:00:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-03-01 16:00:04,005 INFO L87 Difference]: Start difference. First operand 1758 states and 4997 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:05,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:05,431 INFO L93 Difference]: Finished difference Result 2841 states and 7943 transitions. [2022-03-01 16:00:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:00:05,432 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:00:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:05,437 INFO L225 Difference]: With dead ends: 2841 [2022-03-01 16:00:05,437 INFO L226 Difference]: Without dead ends: 2793 [2022-03-01 16:00:05,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=518, Invalid=1834, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:00:05,438 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 386 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:05,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1230 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:00:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2022-03-01 16:00:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 1778. [2022-03-01 16:00:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.831738885762521) internal successors, (5032), 1777 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 5032 transitions. [2022-03-01 16:00:05,479 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 5032 transitions. Word has length 72 [2022-03-01 16:00:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:05,479 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 5032 transitions. [2022-03-01 16:00:05,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 5032 transitions. [2022-03-01 16:00:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:05,482 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:05,482 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:05,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:05,696 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 [2022-03-01 16:00:05,697 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1849763871, now seen corresponding path program 17 times [2022-03-01 16:00:05,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:05,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648231941] [2022-03-01 16:00:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:05,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:05,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:05,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648231941] [2022-03-01 16:00:05,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648231941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:05,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829226394] [2022-03-01 16:00:05,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:00:05,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:05,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:05,805 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:05,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 16:00:05,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:00:05,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:05,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:00:05,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:06,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:06,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829226394] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:06,379 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:06,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-03-01 16:00:06,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766024086] [2022-03-01 16:00:06,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:06,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:00:06,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:00:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:00:06,380 INFO L87 Difference]: Start difference. First operand 1778 states and 5032 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:08,191 INFO L93 Difference]: Finished difference Result 3643 states and 10012 transitions. [2022-03-01 16:00:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:00:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:00:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:08,196 INFO L225 Difference]: With dead ends: 3643 [2022-03-01 16:00:08,196 INFO L226 Difference]: Without dead ends: 3571 [2022-03-01 16:00:08,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=699, Invalid=3083, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:00:08,198 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 497 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:08,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1578 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:00:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2022-03-01 16:00:08,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 1922. [2022-03-01 16:00:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 2.8485163977095262) internal successors, (5472), 1921 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 5472 transitions. [2022-03-01 16:00:08,260 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 5472 transitions. Word has length 72 [2022-03-01 16:00:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:08,260 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 5472 transitions. [2022-03-01 16:00:08,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 5472 transitions. [2022-03-01 16:00:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:08,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:08,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:08,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:08,464 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 [2022-03-01 16:00:08,465 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1491760117, now seen corresponding path program 18 times [2022-03-01 16:00:08,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:08,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604070171] [2022-03-01 16:00:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:08,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:08,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:08,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604070171] [2022-03-01 16:00:08,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604070171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:08,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177733127] [2022-03-01 16:00:08,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:00:08,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:08,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:08,559 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:08,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 16:00:08,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:00:08,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:08,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:00:08,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:08,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:09,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177733127] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:09,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:09,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-03-01 16:00:09,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056417062] [2022-03-01 16:00:09,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:09,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:00:09,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:09,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:00:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:00:09,254 INFO L87 Difference]: Start difference. First operand 1922 states and 5472 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:09,516 INFO L93 Difference]: Finished difference Result 2403 states and 6796 transitions. [2022-03-01 16:00:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 16:00:09,516 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:00:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:09,519 INFO L225 Difference]: With dead ends: 2403 [2022-03-01 16:00:09,519 INFO L226 Difference]: Without dead ends: 2355 [2022-03-01 16:00:09,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2022-03-01 16:00:09,520 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 218 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:09,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 824 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:00:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2022-03-01 16:00:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1922. [2022-03-01 16:00:09,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 2.846434148880791) internal successors, (5468), 1921 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 5468 transitions. [2022-03-01 16:00:09,544 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 5468 transitions. Word has length 72 [2022-03-01 16:00:09,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:09,545 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 5468 transitions. [2022-03-01 16:00:09,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:09,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 5468 transitions. [2022-03-01 16:00:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:09,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:09,547 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:09,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:09,748 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 [2022-03-01 16:00:09,748 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2112399269, now seen corresponding path program 19 times [2022-03-01 16:00:09,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:09,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983503384] [2022-03-01 16:00:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:09,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:09,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983503384] [2022-03-01 16:00:09,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983503384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:09,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161903125] [2022-03-01 16:00:09,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:00:09,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:09,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:09,899 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:09,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 16:00:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:09,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 16:00:09,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:10,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:10,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161903125] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:10,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:10,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 23 [2022-03-01 16:00:10,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989042006] [2022-03-01 16:00:10,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:10,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:00:10,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:00:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:00:10,404 INFO L87 Difference]: Start difference. First operand 1922 states and 5468 transitions. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:12,811 INFO L93 Difference]: Finished difference Result 4872 states and 13393 transitions. [2022-03-01 16:00:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 16:00:12,811 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:00:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:12,819 INFO L225 Difference]: With dead ends: 4872 [2022-03-01 16:00:12,819 INFO L226 Difference]: Without dead ends: 4770 [2022-03-01 16:00:12,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=5741, Unknown=0, NotChecked=0, Total=6642 [2022-03-01 16:00:12,820 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 671 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:12,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 2312 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:00:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2022-03-01 16:00:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 2070. [2022-03-01 16:00:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2069 states have (on average 2.887868535524408) internal successors, (5975), 2069 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5975 transitions. [2022-03-01 16:00:12,866 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5975 transitions. Word has length 72 [2022-03-01 16:00:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:12,866 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5975 transitions. [2022-03-01 16:00:12,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5975 transitions. [2022-03-01 16:00:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:12,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:12,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:12,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-03-01 16:00:13,078 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 [2022-03-01 16:00:13,079 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:13,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash 934362475, now seen corresponding path program 20 times [2022-03-01 16:00:13,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:13,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207878268] [2022-03-01 16:00:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:13,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:13,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:13,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207878268] [2022-03-01 16:00:13,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207878268] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:13,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338057207] [2022-03-01 16:00:13,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:00:13,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:13,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:13,220 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:13,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 16:00:13,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:00:13,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:13,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:00:13,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:13,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:18,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338057207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:18,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:18,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-01 16:00:18,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528689618] [2022-03-01 16:00:18,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:18,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:00:18,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:00:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:00:18,617 INFO L87 Difference]: Start difference. First operand 2070 states and 5975 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:20,073 INFO L93 Difference]: Finished difference Result 3970 states and 11033 transitions. [2022-03-01 16:00:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:00:20,074 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:00:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:20,079 INFO L225 Difference]: With dead ends: 3970 [2022-03-01 16:00:20,079 INFO L226 Difference]: Without dead ends: 3970 [2022-03-01 16:00:20,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=429, Invalid=1551, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:00:20,080 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 472 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:20,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1415 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:00:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2022-03-01 16:00:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 2386. [2022-03-01 16:00:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2386 states, 2385 states have (on average 2.893081761006289) internal successors, (6900), 2385 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 6900 transitions. [2022-03-01 16:00:20,116 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 6900 transitions. Word has length 72 [2022-03-01 16:00:20,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:20,116 INFO L470 AbstractCegarLoop]: Abstraction has 2386 states and 6900 transitions. [2022-03-01 16:00:20,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 6900 transitions. [2022-03-01 16:00:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:20,119 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:20,120 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:20,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:20,325 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 [2022-03-01 16:00:20,325 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1604543435, now seen corresponding path program 21 times [2022-03-01 16:00:20,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:20,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478032367] [2022-03-01 16:00:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:20,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:20,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478032367] [2022-03-01 16:00:20,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478032367] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:20,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193274805] [2022-03-01 16:00:20,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:00:20,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:20,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:20,430 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:20,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 16:00:20,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:00:20,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:20,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:00:20,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:20,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:41,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193274805] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:41,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:41,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-03-01 16:00:41,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915757710] [2022-03-01 16:00:41,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:41,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:00:41,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:41,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:00:41,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:00:41,856 INFO L87 Difference]: Start difference. First operand 2386 states and 6900 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:43,406 INFO L93 Difference]: Finished difference Result 3099 states and 8865 transitions. [2022-03-01 16:00:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:00:43,406 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:00:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:43,411 INFO L225 Difference]: With dead ends: 3099 [2022-03-01 16:00:43,411 INFO L226 Difference]: Without dead ends: 3051 [2022-03-01 16:00:43,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 16:00:43,412 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 254 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:43,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1377 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:00:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-03-01 16:00:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2354. [2022-03-01 16:00:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2354 states, 2353 states have (on average 2.888227794305142) internal successors, (6796), 2353 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 6796 transitions. [2022-03-01 16:00:43,446 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 6796 transitions. Word has length 72 [2022-03-01 16:00:43,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:43,446 INFO L470 AbstractCegarLoop]: Abstraction has 2354 states and 6796 transitions. [2022-03-01 16:00:43,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 6796 transitions. [2022-03-01 16:00:43,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:43,449 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:43,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:43,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:43,664 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 [2022-03-01 16:00:43,665 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:43,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:43,665 INFO L85 PathProgramCache]: Analyzing trace with hash -664216311, now seen corresponding path program 22 times [2022-03-01 16:00:43,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:43,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505590442] [2022-03-01 16:00:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:43,823 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:43,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505590442] [2022-03-01 16:00:43,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505590442] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:43,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956310256] [2022-03-01 16:00:43,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:00:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:43,824 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:43,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 16:00:43,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:00:43,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:43,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:00:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:44,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:47,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956310256] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:47,538 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:47,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-01 16:00:47,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300086078] [2022-03-01 16:00:47,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:47,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:00:47,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:00:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:00:47,539 INFO L87 Difference]: Start difference. First operand 2354 states and 6796 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:48,869 INFO L93 Difference]: Finished difference Result 3499 states and 9761 transitions. [2022-03-01 16:00:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:00:48,870 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:00:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:48,875 INFO L225 Difference]: With dead ends: 3499 [2022-03-01 16:00:48,875 INFO L226 Difference]: Without dead ends: 3499 [2022-03-01 16:00:48,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=451, Invalid=1529, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:00:48,876 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 463 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:48,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1578 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:00:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-03-01 16:00:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2410. [2022-03-01 16:00:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2409 states have (on average 2.893316728933167) internal successors, (6970), 2409 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 6970 transitions. [2022-03-01 16:00:48,916 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 6970 transitions. Word has length 72 [2022-03-01 16:00:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:48,916 INFO L470 AbstractCegarLoop]: Abstraction has 2410 states and 6970 transitions. [2022-03-01 16:00:48,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:00:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 6970 transitions. [2022-03-01 16:00:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:00:48,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:48,920 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:00:48,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:49,136 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 [2022-03-01 16:00:49,137 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1091845075, now seen corresponding path program 23 times [2022-03-01 16:00:49,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:49,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071692557] [2022-03-01 16:00:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:49,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:49,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071692557] [2022-03-01 16:00:49,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071692557] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:49,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201010833] [2022-03-01 16:00:49,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:00:49,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:49,245 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:49,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 16:00:49,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:00:49,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:49,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:00:49,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:49,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:01:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:10,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201010833] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:01:10,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:01:10,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-03-01 16:01:10,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192426114] [2022-03-01 16:01:10,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:01:10,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:01:10,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:01:10,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:01:10,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:01:10,941 INFO L87 Difference]: Start difference. First operand 2410 states and 6970 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:01:13,106 INFO L93 Difference]: Finished difference Result 3577 states and 10146 transitions. [2022-03-01 16:01:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:01:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:01:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:01:13,112 INFO L225 Difference]: With dead ends: 3577 [2022-03-01 16:01:13,112 INFO L226 Difference]: Without dead ends: 3529 [2022-03-01 16:01:13,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=528, Invalid=2022, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:01:13,113 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 381 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:01:13,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1306 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:01:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2022-03-01 16:01:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2362. [2022-03-01 16:01:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 2.891147818720881) internal successors, (6826), 2361 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 6826 transitions. [2022-03-01 16:01:13,153 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 6826 transitions. Word has length 72 [2022-03-01 16:01:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:01:13,154 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 6826 transitions. [2022-03-01 16:01:13,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 6826 transitions. [2022-03-01 16:01:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:01:13,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:01:13,157 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:01:13,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-01 16:01:13,361 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 [2022-03-01 16:01:13,362 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:01:13,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:01:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2000622901, now seen corresponding path program 24 times [2022-03-01 16:01:13,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:01:13,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778491956] [2022-03-01 16:01:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:01:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:01:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:13,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:01:13,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778491956] [2022-03-01 16:01:13,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778491956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:01:13,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528404520] [2022-03-01 16:01:13,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:01:13,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:13,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:01:13,458 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:01:13,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 16:01:13,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:01:13,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:01:13,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:01:13,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:01:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:13,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:01:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:35,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528404520] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:01:35,402 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:01:35,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-03-01 16:01:35,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782053437] [2022-03-01 16:01:35,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:01:35,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:01:35,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:01:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:01:35,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:01:35,403 INFO L87 Difference]: Start difference. First operand 2362 states and 6826 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:01:36,451 INFO L93 Difference]: Finished difference Result 3089 states and 8818 transitions. [2022-03-01 16:01:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 16:01:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 16:01:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:01:36,456 INFO L225 Difference]: With dead ends: 3089 [2022-03-01 16:01:36,456 INFO L226 Difference]: Without dead ends: 3017 [2022-03-01 16:01:36,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:01:36,456 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 276 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:01:36,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 1075 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:01:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-03-01 16:01:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2398. [2022-03-01 16:01:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 2.8873591989987486) internal successors, (6921), 2397 states have internal predecessors, (6921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 6921 transitions. [2022-03-01 16:01:36,490 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 6921 transitions. Word has length 72 [2022-03-01 16:01:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:01:36,490 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 6921 transitions. [2022-03-01 16:01:36,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 6921 transitions. [2022-03-01 16:01:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:01:36,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:01:36,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:01:36,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-01 16:01:36,709 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 [2022-03-01 16:01:36,710 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:01:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:01:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1809397223, now seen corresponding path program 25 times [2022-03-01 16:01:36,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:01:36,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544746360] [2022-03-01 16:01:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:01:36,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:01:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:36,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:01:36,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544746360] [2022-03-01 16:01:36,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544746360] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:01:36,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569145514] [2022-03-01 16:01:36,865 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:01:36,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:01:36,866 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:01:36,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 16:01:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:36,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:01:36,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:01:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:37,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:01:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:40,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569145514] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:01:40,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:01:40,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-01 16:01:40,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187024940] [2022-03-01 16:01:40,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:01:40,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:01:40,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:01:40,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:01:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:01:40,419 INFO L87 Difference]: Start difference. First operand 2398 states and 6921 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:01:41,830 INFO L93 Difference]: Finished difference Result 4265 states and 11995 transitions. [2022-03-01 16:01:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:01:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:01:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:01:41,848 INFO L225 Difference]: With dead ends: 4265 [2022-03-01 16:01:41,848 INFO L226 Difference]: Without dead ends: 4265 [2022-03-01 16:01:41,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:01:41,848 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 539 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:01:41,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1340 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:01:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2022-03-01 16:01:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 2714. [2022-03-01 16:01:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 2.912642830814596) internal successors, (7902), 2713 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 7902 transitions. [2022-03-01 16:01:41,885 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 7902 transitions. Word has length 72 [2022-03-01 16:01:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:01:41,885 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 7902 transitions. [2022-03-01 16:01:41,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:01:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 7902 transitions. [2022-03-01 16:01:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:01:41,889 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:01:41,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:01:41,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-01 16:01:42,103 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 [2022-03-01 16:01:42,103 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:01:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:01:42,104 INFO L85 PathProgramCache]: Analyzing trace with hash -53335837, now seen corresponding path program 26 times [2022-03-01 16:01:42,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:01:42,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776039104] [2022-03-01 16:01:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:01:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:01:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:42,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:01:42,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776039104] [2022-03-01 16:01:42,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776039104] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:01:42,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254250487] [2022-03-01 16:01:42,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:01:42,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:42,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:01:42,251 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:01:42,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 16:01:42,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:01:42,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:01:42,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:01:42,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:01:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:42,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:02:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:05,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254250487] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:02:05,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:02:05,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 16:02:05,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163354417] [2022-03-01 16:02:05,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:02:05,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:02:05,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:02:05,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:02:05,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:02:05,209 INFO L87 Difference]: Start difference. First operand 2714 states and 7902 transitions. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:02:07,666 INFO L93 Difference]: Finished difference Result 4279 states and 12280 transitions. [2022-03-01 16:02:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:02:07,666 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-01 16:02:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:02:07,673 INFO L225 Difference]: With dead ends: 4279 [2022-03-01 16:02:07,673 INFO L226 Difference]: Without dead ends: 4231 [2022-03-01 16:02:07,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=599, Invalid=2263, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:02:07,674 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 591 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:02:07,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 1023 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:02:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2022-03-01 16:02:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 2878. [2022-03-01 16:02:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2877 states have (on average 2.9283976364268334) internal successors, (8425), 2877 states have internal predecessors, (8425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 8425 transitions. [2022-03-01 16:02:07,721 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 8425 transitions. Word has length 72 [2022-03-01 16:02:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:02:07,721 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 8425 transitions. [2022-03-01 16:02:07,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:07,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 8425 transitions. [2022-03-01 16:02:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:02:07,726 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:02:07,726 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, 1, 1] [2022-03-01 16:02:07,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-01 16:02:07,926 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 [2022-03-01 16:02:07,927 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:02:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:02:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash 855441989, now seen corresponding path program 27 times [2022-03-01 16:02:07,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:02:07,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713716360] [2022-03-01 16:02:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:02:07,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:02:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:02:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:08,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:02:08,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713716360] [2022-03-01 16:02:08,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713716360] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:02:08,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425707501] [2022-03-01 16:02:08,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:02:08,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:02:08,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:02:08,064 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:02:08,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 16:02:08,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:02:08,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:02:08,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:02:08,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:02:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:08,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:02:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:27,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425707501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:02:27,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:02:27,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 16:02:27,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295613320] [2022-03-01 16:02:27,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:02:27,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:02:27,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:02:27,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:02:27,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:02:27,452 INFO L87 Difference]: Start difference. First operand 2878 states and 8425 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:02:29,209 INFO L93 Difference]: Finished difference Result 4349 states and 12413 transitions. [2022-03-01 16:02:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:02:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:02:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:02:29,215 INFO L225 Difference]: With dead ends: 4349 [2022-03-01 16:02:29,215 INFO L226 Difference]: Without dead ends: 4277 [2022-03-01 16:02:29,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:02:29,215 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 404 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:02:29,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 1017 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:02:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-03-01 16:02:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 2794. [2022-03-01 16:02:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2794 states, 2793 states have (on average 2.9308986752595776) internal successors, (8186), 2793 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 8186 transitions. [2022-03-01 16:02:29,253 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 8186 transitions. Word has length 72 [2022-03-01 16:02:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:02:29,253 INFO L470 AbstractCegarLoop]: Abstraction has 2794 states and 8186 transitions. [2022-03-01 16:02:29,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 8186 transitions. [2022-03-01 16:02:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 16:02:29,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:02:29,257 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:02:29,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-01 16:02:29,463 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 [2022-03-01 16:02:29,463 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:02:29,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:02:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1488314149, now seen corresponding path program 28 times [2022-03-01 16:02:29,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:02:29,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311169803] [2022-03-01 16:02:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:02:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:02:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:02:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:29,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:02:29,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311169803] [2022-03-01 16:02:29,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311169803] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:02:29,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545901234] [2022-03-01 16:02:29,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:02:29,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:02:29,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:02:29,563 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:02:29,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 16:02:29,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:02:29,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:02:29,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:02:29,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:02:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:29,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:02:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:48,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545901234] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:02:48,363 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:02:48,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 16:02:48,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562040684] [2022-03-01 16:02:48,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:02:48,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:02:48,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:02:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:02:48,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:02:48,364 INFO L87 Difference]: Start difference. First operand 2794 states and 8186 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:02:48,907 INFO L93 Difference]: Finished difference Result 3493 states and 10089 transitions. [2022-03-01 16:02:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 16:02:48,907 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:02:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:02:48,913 INFO L225 Difference]: With dead ends: 3493 [2022-03-01 16:02:48,913 INFO L226 Difference]: Without dead ends: 3397 [2022-03-01 16:02:48,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-03-01 16:02:48,914 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 257 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:02:48,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 877 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:02:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2022-03-01 16:02:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 2790. [2022-03-01 16:02:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 2.9282897095733236) internal successors, (8167), 2789 states have internal predecessors, (8167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 8167 transitions. [2022-03-01 16:02:48,953 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 8167 transitions. Word has length 72 [2022-03-01 16:02:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:02:48,953 INFO L470 AbstractCegarLoop]: Abstraction has 2790 states and 8167 transitions. [2022-03-01 16:02:48,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:02:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 8167 transitions. [2022-03-01 16:02:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:02:48,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:02:48,957 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, 1, 1] [2022-03-01 16:02:48,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-01 16:02:49,157 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 [2022-03-01 16:02:49,158 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:02:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:02:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 191604221, now seen corresponding path program 29 times [2022-03-01 16:02:49,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:02:49,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136132959] [2022-03-01 16:02:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:02:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:02:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:02:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:49,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:02:49,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136132959] [2022-03-01 16:02:49,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136132959] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:02:49,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168938854] [2022-03-01 16:02:49,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:02:49,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:02:49,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:02:49,449 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:02:49,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 16:02:49,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:02:49,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:02:49,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:02:49,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-03-01 16:11:50,466 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:11:50,466 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:11:50,467 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-01 16:11:50,468 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:11:50,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-01 16:11:50,686 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 [2022-03-01 16:11:50,687 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 6 for 3ms.. [2022-03-01 16:11:50,688 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:11:50,688 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:11:50,690 INFO L732 BasicCegarLoop]: Path program histogram: [29, 2, 1, 1] [2022-03-01 16:11:50,692 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:11:50,692 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:11:50,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:11:50 BasicIcfg [2022-03-01 16:11:50,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:11:50,693 INFO L158 Benchmark]: Toolchain (without parser) took 787920.91ms. Allocated memory was 182.5MB in the beginning and 288.4MB in the end (delta: 105.9MB). Free memory was 125.8MB in the beginning and 198.8MB in the end (delta: -73.0MB). Peak memory consumption was 166.9MB. Max. memory is 8.0GB. [2022-03-01 16:11:50,694 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:11:50,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.28ms. Allocated memory was 182.5MB in the beginning and 240.1MB in the end (delta: 57.7MB). Free memory was 125.6MB in the beginning and 211.6MB in the end (delta: -86.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-01 16:11:50,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.16ms. Allocated memory is still 240.1MB. Free memory was 211.6MB in the beginning and 210.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:11:50,694 INFO L158 Benchmark]: Boogie Preprocessor took 13.32ms. Allocated memory is still 240.1MB. Free memory was 210.3MB in the beginning and 208.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 16:11:50,694 INFO L158 Benchmark]: RCFGBuilder took 320.35ms. Allocated memory is still 240.1MB. Free memory was 208.7MB in the beginning and 195.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-01 16:11:50,694 INFO L158 Benchmark]: TraceAbstraction took 787346.05ms. Allocated memory was 240.1MB in the beginning and 288.4MB in the end (delta: 48.2MB). Free memory was 194.6MB in the beginning and 198.8MB in the end (delta: -4.3MB). Peak memory consumption was 178.8MB. Max. memory is 8.0GB. [2022-03-01 16:11:50,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.28ms. Allocated memory was 182.5MB in the beginning and 240.1MB in the end (delta: 57.7MB). Free memory was 125.6MB in the beginning and 211.6MB in the end (delta: -86.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.16ms. Allocated memory is still 240.1MB. Free memory was 211.6MB in the beginning and 210.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.32ms. Allocated memory is still 240.1MB. Free memory was 210.3MB in the beginning and 208.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 320.35ms. Allocated memory is still 240.1MB. Free memory was 208.7MB in the beginning and 195.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 787346.05ms. Allocated memory was 240.1MB in the beginning and 288.4MB in the end (delta: 48.2MB). Free memory was 194.6MB in the beginning and 198.8MB in the end (delta: -4.3MB). Peak memory consumption was 178.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 6 for 3ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 6 for 3ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 6 for 3ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 787.2s, OverallIterations: 33, TraceHistogramMax: 2, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.1s, AutomataDifference: 45.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12599 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12599 mSDsluCounter, 36953 SdHoareTripleChecker+Invalid, 12.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34764 mSDsCounter, 1551 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15237 IncrementalHoareTripleChecker+Invalid, 16788 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1551 mSolverCounterUnsat, 4067 mSDtfsCounter, 15237 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5633 GetRequests, 4217 SyntacticMatches, 39 SemanticMatches, 1377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23626 ImplicationChecksByTransitivity, 37.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2878occurred in iteration=30, InterpolantAutomatonStates: 1214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 32 MinimizatonAttempts, 31640 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 190.1s InterpolantComputationTime, 4392 NumberOfCodeBlocks, 4285 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 6372 ConstructedInterpolants, 0 QuantifiedInterpolants, 33389 SizeOfPredicates, 311 NumberOfNonLiveVariables, 4488 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 91 InterpolantComputations, 4 PerfectInterpolantSequences, 301/641 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown