/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-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 15:50:10,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 15:50:10,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 15:50:11,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 15:50:11,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 15:50:11,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 15:50:11,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 15:50:11,077 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 15:50:11,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 15:50:11,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 15:50:11,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 15:50:11,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 15:50:11,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 15:50:11,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 15:50:11,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 15:50:11,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 15:50:11,100 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 15:50:11,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 15:50:11,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 15:50:11,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 15:50:11,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 15:50:11,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 15:50:11,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 15:50:11,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:50:11,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 15:50:11,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 15:50:11,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 15:50:11,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 15:50:11,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 15:50:11,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 15:50:11,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 15:50:11,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 15:50:11,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 15:50:11,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 15:50:11,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 15:50:11,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 15:50:11,340 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 15:50:11,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-03-01 15:50:11,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9f325f3/84922987e7864ee6bbeff59f38921c61/FLAGf60fba669 [2022-03-01 15:50:11,722 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 15:50:11,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-03-01 15:50:11,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9f325f3/84922987e7864ee6bbeff59f38921c61/FLAGf60fba669 [2022-03-01 15:50:12,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9f325f3/84922987e7864ee6bbeff59f38921c61 [2022-03-01 15:50:12,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 15:50:12,190 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 15:50:12,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 15:50:12,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 15:50:12,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 15:50:12,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e27528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12, skipping insertion in model container [2022-03-01 15:50:12,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 15:50:12,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 15:50:12,369 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-figure3.wvr.c[2121,2134] [2022-03-01 15:50:12,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:50:12,377 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 15:50:12,389 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-figure3.wvr.c[2121,2134] [2022-03-01 15:50:12,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:50:12,399 INFO L208 MainTranslator]: Completed translation [2022-03-01 15:50:12,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12 WrapperNode [2022-03-01 15:50:12,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 15:50:12,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 15:50:12,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 15:50:12,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 15:50:12,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,429 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2022-03-01 15:50:12,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 15:50:12,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 15:50:12,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 15:50:12,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 15:50:12,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 15:50:12,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 15:50:12,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 15:50:12,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 15:50:12,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (1/1) ... [2022-03-01 15:50:12,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:50:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:12,498 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 15:50:12,509 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 15:50:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 15:50:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 15:50:12,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 15:50:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 15:50:12,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 15:50:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 15:50:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 15:50:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 15:50:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 15:50:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 15:50:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 15:50:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 15:50:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 15:50:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 15:50:12,532 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 15:50:12,589 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 15:50:12,589 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 15:50:12,700 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 15:50:12,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 15:50:12,720 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 15:50:12,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:50:12 BoogieIcfgContainer [2022-03-01 15:50:12,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 15:50:12,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 15:50:12,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 15:50:12,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 15:50:12,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 03:50:12" (1/3) ... [2022-03-01 15:50:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7959626f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:50:12, skipping insertion in model container [2022-03-01 15:50:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:50:12" (2/3) ... [2022-03-01 15:50:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7959626f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:50:12, skipping insertion in model container [2022-03-01 15:50:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:50:12" (3/3) ... [2022-03-01 15:50:12,727 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2022-03-01 15:50:12,730 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 15:50:12,730 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 15:50:12,730 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 15:50:12,730 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 15:50:12,755 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,755 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,755 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,756 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,756 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,757 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,758 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,758 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,759 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,759 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,761 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,761 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,761 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,763 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,763 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,763 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,763 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,764 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,764 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,764 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,764 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,765 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,768 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,769 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,769 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,769 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,769 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:50:12,773 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 15:50:12,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 15:50:12,852 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 15:50:12,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 15:50:12,863 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-03-01 15:50:12,931 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 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 15:50:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 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 15:50:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-01 15:50:12,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:12,953 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 15:50:12,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1942784834, now seen corresponding path program 1 times [2022-03-01 15:50:12,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:12,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630185668] [2022-03-01 15:50:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:13,143 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 15:50:13,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:13,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630185668] [2022-03-01 15:50:13,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630185668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:13,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:13,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 15:50:13,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330728300] [2022-03-01 15:50:13,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:13,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 15:50:13,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 15:50:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:50:13,179 INFO L87 Difference]: Start difference. First operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 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 15:50:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:13,218 INFO L93 Difference]: Finished difference Result 447 states and 1095 transitions. [2022-03-01 15:50:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 15:50:13,220 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 15:50:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:13,232 INFO L225 Difference]: With dead ends: 447 [2022-03-01 15:50:13,232 INFO L226 Difference]: Without dead ends: 445 [2022-03-01 15:50:13,233 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 15:50:13,239 INFO L933 BasicCegarLoop]: 67 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, 67 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 15:50:13,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-03-01 15:50:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2022-03-01 15:50:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.4617117117117115) internal successors, (1093), 444 states have internal predecessors, (1093), 0 states have call successors, (0), 0 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 15:50:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1093 transitions. [2022-03-01 15:50:13,304 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1093 transitions. Word has length 60 [2022-03-01 15:50:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:13,305 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1093 transitions. [2022-03-01 15:50:13,305 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 15:50:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1093 transitions. [2022-03-01 15:50:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-01 15:50:13,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:13,308 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 15:50:13,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 15:50:13,309 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1057361610, now seen corresponding path program 1 times [2022-03-01 15:50:13,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:13,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532428194] [2022-03-01 15:50:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:13,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:13,462 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 15:50:13,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:13,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532428194] [2022-03-01 15:50:13,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532428194] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:13,463 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:13,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:50:13,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014127236] [2022-03-01 15:50:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:13,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:50:13,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:50:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:13,465 INFO L87 Difference]: Start difference. First operand 445 states and 1093 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 15:50:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:13,532 INFO L93 Difference]: Finished difference Result 607 states and 1465 transitions. [2022-03-01 15:50:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:50:13,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 15:50:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:13,538 INFO L225 Difference]: With dead ends: 607 [2022-03-01 15:50:13,538 INFO L226 Difference]: Without dead ends: 493 [2022-03-01 15:50:13,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:50:13,539 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:13,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 220 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-01 15:50:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 481. [2022-03-01 15:50:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 2.4479166666666665) internal successors, (1175), 480 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 15:50:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1175 transitions. [2022-03-01 15:50:13,558 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1175 transitions. Word has length 60 [2022-03-01 15:50:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:13,559 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1175 transitions. [2022-03-01 15:50:13,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 15:50:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1175 transitions. [2022-03-01 15:50:13,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:13,560 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:13,560 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 15:50:13,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 15:50:13,561 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:13,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:13,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1205009006, now seen corresponding path program 1 times [2022-03-01 15:50:13,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:13,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685027871] [2022-03-01 15:50:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:13,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:13,662 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 15:50:13,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:13,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685027871] [2022-03-01 15:50:13,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685027871] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:13,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:13,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:50:13,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517798881] [2022-03-01 15:50:13,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:13,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:50:13,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:13,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:50:13,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:13,664 INFO L87 Difference]: Start difference. First operand 481 states and 1175 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:13,709 INFO L93 Difference]: Finished difference Result 673 states and 1670 transitions. [2022-03-01 15:50:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:50:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:13,712 INFO L225 Difference]: With dead ends: 673 [2022-03-01 15:50:13,713 INFO L226 Difference]: Without dead ends: 661 [2022-03-01 15:50:13,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:13,714 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 38 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:13,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 173 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-01 15:50:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 485. [2022-03-01 15:50:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 2.450413223140496) internal successors, (1186), 484 states have internal predecessors, (1186), 0 states have call successors, (0), 0 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 15:50:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1186 transitions. [2022-03-01 15:50:13,738 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1186 transitions. Word has length 65 [2022-03-01 15:50:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:13,739 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1186 transitions. [2022-03-01 15:50:13,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1186 transitions. [2022-03-01 15:50:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:13,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:13,740 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 15:50:13,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 15:50:13,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:13,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:13,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1184291620, now seen corresponding path program 2 times [2022-03-01 15:50:13,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:13,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673545023] [2022-03-01 15:50:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:13,886 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 15:50:13,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:13,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673545023] [2022-03-01 15:50:13,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673545023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:13,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:13,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:50:13,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316255373] [2022-03-01 15:50:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:13,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:50:13,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:50:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:13,888 INFO L87 Difference]: Start difference. First operand 485 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:13,951 INFO L93 Difference]: Finished difference Result 673 states and 1682 transitions. [2022-03-01 15:50:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:50:13,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:13,954 INFO L225 Difference]: With dead ends: 673 [2022-03-01 15:50:13,955 INFO L226 Difference]: Without dead ends: 673 [2022-03-01 15:50:13,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:13,956 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 36 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:13,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 215 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-03-01 15:50:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 497. [2022-03-01 15:50:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 2.4576612903225805) internal successors, (1219), 496 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 15:50:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1219 transitions. [2022-03-01 15:50:13,966 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1219 transitions. Word has length 65 [2022-03-01 15:50:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:13,967 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1219 transitions. [2022-03-01 15:50:13,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1219 transitions. [2022-03-01 15:50:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:13,968 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:13,968 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 15:50:13,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 15:50:13,968 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1828792382, now seen corresponding path program 3 times [2022-03-01 15:50:13,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:13,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255210648] [2022-03-01 15:50:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:14,058 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 15:50:14,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:14,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255210648] [2022-03-01 15:50:14,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255210648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:14,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:14,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:50:14,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502605137] [2022-03-01 15:50:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:14,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:50:14,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:50:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:14,060 INFO L87 Difference]: Start difference. First operand 497 states and 1219 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 15:50:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:14,124 INFO L93 Difference]: Finished difference Result 813 states and 2058 transitions. [2022-03-01 15:50:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:50:14,124 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 15:50:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:14,129 INFO L225 Difference]: With dead ends: 813 [2022-03-01 15:50:14,130 INFO L226 Difference]: Without dead ends: 813 [2022-03-01 15:50:14,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:14,131 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 59 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:14,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 241 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:50:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-03-01 15:50:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 524. [2022-03-01 15:50:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 0 states have call successors, (0), 0 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 15:50:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-03-01 15:50:14,148 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-03-01 15:50:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:14,149 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-03-01 15:50:14,150 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 15:50:14,150 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-03-01 15:50:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:14,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:14,152 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 15:50:14,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 15:50:14,152 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash 780130990, now seen corresponding path program 4 times [2022-03-01 15:50:14,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:14,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066235104] [2022-03-01 15:50:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:14,255 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 15:50:14,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:14,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066235104] [2022-03-01 15:50:14,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066235104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:14,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:14,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:50:14,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724024140] [2022-03-01 15:50:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:14,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:50:14,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:50:14,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:14,257 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:14,295 INFO L93 Difference]: Finished difference Result 672 states and 1677 transitions. [2022-03-01 15:50:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:50:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:14,299 INFO L225 Difference]: With dead ends: 672 [2022-03-01 15:50:14,299 INFO L226 Difference]: Without dead ends: 672 [2022-03-01 15:50:14,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:14,308 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 41 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:14,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 176 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-03-01 15:50:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 556. [2022-03-01 15:50:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.4684684684684686) internal successors, (1370), 555 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 15:50:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1370 transitions. [2022-03-01 15:50:14,327 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1370 transitions. Word has length 65 [2022-03-01 15:50:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:14,328 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1370 transitions. [2022-03-01 15:50:14,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1370 transitions. [2022-03-01 15:50:14,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:14,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:14,331 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 15:50:14,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 15:50:14,331 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:14,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash 135630228, now seen corresponding path program 5 times [2022-03-01 15:50:14,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:14,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123565277] [2022-03-01 15:50:14,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:14,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:14,487 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 15:50:14,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:14,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123565277] [2022-03-01 15:50:14,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123565277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:14,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:14,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:50:14,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467468665] [2022-03-01 15:50:14,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:14,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:50:14,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:50:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:14,490 INFO L87 Difference]: Start difference. First operand 556 states and 1370 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 15:50:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:14,565 INFO L93 Difference]: Finished difference Result 812 states and 2053 transitions. [2022-03-01 15:50:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:50:14,565 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 15:50:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:14,568 INFO L225 Difference]: With dead ends: 812 [2022-03-01 15:50:14,569 INFO L226 Difference]: Without dead ends: 812 [2022-03-01 15:50:14,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:14,571 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 56 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:14,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 336 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:50:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-01 15:50:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 544. [2022-03-01 15:50:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.4622467771639043) internal successors, (1337), 543 states have internal predecessors, (1337), 0 states have call successors, (0), 0 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 15:50:14,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1337 transitions. [2022-03-01 15:50:14,599 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1337 transitions. Word has length 65 [2022-03-01 15:50:14,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:14,599 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1337 transitions. [2022-03-01 15:50:14,599 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 15:50:14,600 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1337 transitions. [2022-03-01 15:50:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:14,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:14,603 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 15:50:14,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 15:50:14,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1678651950, now seen corresponding path program 6 times [2022-03-01 15:50:14,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:14,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882271880] [2022-03-01 15:50:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:14,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:14,708 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 15:50:14,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:14,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882271880] [2022-03-01 15:50:14,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882271880] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:14,708 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:14,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:50:14,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822131390] [2022-03-01 15:50:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:14,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:50:14,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:50:14,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:14,710 INFO L87 Difference]: Start difference. First operand 544 states and 1337 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 15:50:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:14,792 INFO L93 Difference]: Finished difference Result 843 states and 2140 transitions. [2022-03-01 15:50:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:50:14,792 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 15:50:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:14,796 INFO L225 Difference]: With dead ends: 843 [2022-03-01 15:50:14,796 INFO L226 Difference]: Without dead ends: 843 [2022-03-01 15:50:14,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:50:14,797 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 88 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:14,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 345 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:50:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-03-01 15:50:14,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 524. [2022-03-01 15:50:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 0 states have call successors, (0), 0 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 15:50:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-03-01 15:50:14,810 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-03-01 15:50:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:14,810 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-03-01 15:50:14,810 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 15:50:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-03-01 15:50:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:14,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:14,814 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 15:50:14,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 15:50:14,814 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1844803496, now seen corresponding path program 7 times [2022-03-01 15:50:14,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:14,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864490882] [2022-03-01 15:50:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:14,884 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 15:50:14,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:14,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864490882] [2022-03-01 15:50:14,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864490882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:14,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:14,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:50:14,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844462760] [2022-03-01 15:50:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:14,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:50:14,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:50:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:14,887 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:14,945 INFO L93 Difference]: Finished difference Result 790 states and 1951 transitions. [2022-03-01 15:50:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:50:14,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:14,948 INFO L225 Difference]: With dead ends: 790 [2022-03-01 15:50:14,948 INFO L226 Difference]: Without dead ends: 754 [2022-03-01 15:50:14,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:50:14,949 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 63 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:14,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 242 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-03-01 15:50:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 580. [2022-03-01 15:50:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.5025906735751295) internal successors, (1449), 579 states have internal predecessors, (1449), 0 states have call successors, (0), 0 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 15:50:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1449 transitions. [2022-03-01 15:50:14,961 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1449 transitions. Word has length 65 [2022-03-01 15:50:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:14,961 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1449 transitions. [2022-03-01 15:50:14,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1449 transitions. [2022-03-01 15:50:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:14,962 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:14,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:14,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 15:50:14,963 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1977551010, now seen corresponding path program 8 times [2022-03-01 15:50:14,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:14,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450237960] [2022-03-01 15:50:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:15,041 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 15:50:15,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:15,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450237960] [2022-03-01 15:50:15,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450237960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:15,042 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:15,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:50:15,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978966452] [2022-03-01 15:50:15,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:15,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:50:15,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:15,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:50:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:15,047 INFO L87 Difference]: Start difference. First operand 580 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:15,089 INFO L93 Difference]: Finished difference Result 798 states and 1985 transitions. [2022-03-01 15:50:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:50:15,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:15,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:15,092 INFO L225 Difference]: With dead ends: 798 [2022-03-01 15:50:15,092 INFO L226 Difference]: Without dead ends: 798 [2022-03-01 15:50:15,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:50:15,093 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 43 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:15,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 212 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-01 15:50:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 588. [2022-03-01 15:50:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 2.4991482112436114) internal successors, (1467), 587 states have internal predecessors, (1467), 0 states have call successors, (0), 0 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 15:50:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1467 transitions. [2022-03-01 15:50:15,105 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1467 transitions. Word has length 65 [2022-03-01 15:50:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:15,105 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1467 transitions. [2022-03-01 15:50:15,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 15:50:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1467 transitions. [2022-03-01 15:50:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-01 15:50:15,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:15,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:15,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 15:50:15,107 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1672915524, now seen corresponding path program 9 times [2022-03-01 15:50:15,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:15,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65070408] [2022-03-01 15:50:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:15,164 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 15:50:15,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:15,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65070408] [2022-03-01 15:50:15,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65070408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:15,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:50:15,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:50:15,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290835500] [2022-03-01 15:50:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:15,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:50:15,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:50:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:15,165 INFO L87 Difference]: Start difference. First operand 588 states and 1467 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 15:50:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:15,213 INFO L93 Difference]: Finished difference Result 719 states and 1804 transitions. [2022-03-01 15:50:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:50:15,214 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 15:50:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:15,216 INFO L225 Difference]: With dead ends: 719 [2022-03-01 15:50:15,217 INFO L226 Difference]: Without dead ends: 719 [2022-03-01 15:50:15,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:50:15,217 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 41 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:15,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 290 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-03-01 15:50:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 492. [2022-03-01 15:50:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.441955193482688) internal successors, (1199), 491 states have internal predecessors, (1199), 0 states have call successors, (0), 0 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 15:50:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1199 transitions. [2022-03-01 15:50:15,227 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1199 transitions. Word has length 65 [2022-03-01 15:50:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:15,227 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1199 transitions. [2022-03-01 15:50:15,227 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 15:50:15,227 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1199 transitions. [2022-03-01 15:50:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 15:50:15,228 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:15,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:15,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 15:50:15,228 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:15,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1959986980, now seen corresponding path program 1 times [2022-03-01 15:50:15,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:15,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142226758] [2022-03-01 15:50:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:15,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:15,302 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 15:50:15,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:15,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142226758] [2022-03-01 15:50:15,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142226758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:15,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646224643] [2022-03-01 15:50:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:15,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:15,304 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 15:50:15,365 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 15:50:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:15,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 15:50:15,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:50:15,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:50:15,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646224643] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:50:15,651 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:50:15,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2022-03-01 15:50:15,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89056425] [2022-03-01 15:50:15,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:50:15,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:50:15,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:50:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:50:15,652 INFO L87 Difference]: Start difference. First operand 492 states and 1199 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 15:50:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:15,697 INFO L93 Difference]: Finished difference Result 1185 states and 2967 transitions. [2022-03-01 15:50:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:50:15,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 15:50:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:15,701 INFO L225 Difference]: With dead ends: 1185 [2022-03-01 15:50:15,701 INFO L226 Difference]: Without dead ends: 996 [2022-03-01 15:50:15,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-03-01 15:50:15,701 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:15,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 359 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-03-01 15:50:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 862. [2022-03-01 15:50:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.5516840882694543) internal successors, (2197), 861 states have internal predecessors, (2197), 0 states have call successors, (0), 0 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 15:50:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2197 transitions. [2022-03-01 15:50:15,718 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2197 transitions. Word has length 70 [2022-03-01 15:50:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:15,718 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2197 transitions. [2022-03-01 15:50:15,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 15:50:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2197 transitions. [2022-03-01 15:50:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:15,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:15,722 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, 1, 1, 1] [2022-03-01 15:50:15,739 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 15:50:15,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-01 15:50:15,935 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash 864971766, now seen corresponding path program 2 times [2022-03-01 15:50:15,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:15,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833820017] [2022-03-01 15:50:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:16,067 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 15:50:16,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:16,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833820017] [2022-03-01 15:50:16,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833820017] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:16,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003105149] [2022-03-01 15:50:16,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:16,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:16,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:16,069 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 15:50:16,070 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 15:50:16,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:16,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:16,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:16,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:16,308 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 15:50:16,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:16,550 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 15:50:16,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003105149] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:16,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:16,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:16,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302459843] [2022-03-01 15:50:16,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:16,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:16,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:16,551 INFO L87 Difference]: Start difference. First operand 862 states and 2197 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 15:50:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:18,919 INFO L93 Difference]: Finished difference Result 3702 states and 9759 transitions. [2022-03-01 15:50:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 15:50:18,919 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 75 [2022-03-01 15:50:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:18,932 INFO L225 Difference]: With dead ends: 3702 [2022-03-01 15:50:18,932 INFO L226 Difference]: Without dead ends: 3654 [2022-03-01 15:50:18,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=993, Invalid=5169, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:50:18,934 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 649 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:18,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1510 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:50:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-01 15:50:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 1578. [2022-03-01 15:50:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1577 states have (on average 2.7228915662650603) internal successors, (4294), 1577 states have internal predecessors, (4294), 0 states have call successors, (0), 0 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 15:50:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 4294 transitions. [2022-03-01 15:50:18,981 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 4294 transitions. Word has length 75 [2022-03-01 15:50:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:18,981 INFO L470 AbstractCegarLoop]: Abstraction has 1578 states and 4294 transitions. [2022-03-01 15:50:18,981 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 15:50:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 4294 transitions. [2022-03-01 15:50:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:18,984 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:18,984 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, 1, 1, 1] [2022-03-01 15:50:19,003 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 15:50:19,203 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,SelfDestructingSolverStorable12 [2022-03-01 15:50:19,204 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:19,204 INFO L85 PathProgramCache]: Analyzing trace with hash 885689152, now seen corresponding path program 3 times [2022-03-01 15:50:19,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:19,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828751743] [2022-03-01 15:50:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:19,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:19,332 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 15:50:19,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:19,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828751743] [2022-03-01 15:50:19,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828751743] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:19,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89947470] [2022-03-01 15:50:19,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:19,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:19,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:19,337 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 15:50:19,338 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 15:50:19,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:50:19,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:19,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:19,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:19,573 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 15:50:19,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:19,771 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 15:50:19,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89947470] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:19,771 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:19,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-01 15:50:19,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154802336] [2022-03-01 15:50:19,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:19,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:50:19,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:50:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:50:19,772 INFO L87 Difference]: Start difference. First operand 1578 states and 4294 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:50:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:23,555 INFO L93 Difference]: Finished difference Result 4718 states and 12452 transitions. [2022-03-01 15:50:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-01 15:50:23,564 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:50:23,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:23,604 INFO L225 Difference]: With dead ends: 4718 [2022-03-01 15:50:23,604 INFO L226 Difference]: Without dead ends: 4658 [2022-03-01 15:50:23,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1817, Invalid=8083, Unknown=0, NotChecked=0, Total=9900 [2022-03-01 15:50:23,607 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 878 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:23,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 1921 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 15:50:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2022-03-01 15:50:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 1633. [2022-03-01 15:50:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1632 states have (on average 2.7150735294117645) internal successors, (4431), 1632 states have internal predecessors, (4431), 0 states have call successors, (0), 0 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 15:50:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 4431 transitions. [2022-03-01 15:50:23,656 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 4431 transitions. Word has length 75 [2022-03-01 15:50:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:23,656 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 4431 transitions. [2022-03-01 15:50:23,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:50:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 4431 transitions. [2022-03-01 15:50:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:23,659 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:23,659 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, 1, 1, 1] [2022-03-01 15:50:23,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:23,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:23,876 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash 487460194, now seen corresponding path program 4 times [2022-03-01 15:50:23,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:23,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846319116] [2022-03-01 15:50:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:24,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:24,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846319116] [2022-03-01 15:50:24,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846319116] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:24,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514908606] [2022-03-01 15:50:24,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:24,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:24,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:24,020 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 15:50:24,021 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 15:50:24,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:24,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:24,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:24,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:24,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:24,552 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 15:50:24,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514908606] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:24,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:24,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:24,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757464555] [2022-03-01 15:50:24,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:24,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:24,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:24,555 INFO L87 Difference]: Start difference. First operand 1633 states and 4431 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:50:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:28,777 INFO L93 Difference]: Finished difference Result 5290 states and 14311 transitions. [2022-03-01 15:50:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-03-01 15:50:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:50:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:28,788 INFO L225 Difference]: With dead ends: 5290 [2022-03-01 15:50:28,789 INFO L226 Difference]: Without dead ends: 5125 [2022-03-01 15:50:28,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2438, Invalid=13818, Unknown=0, NotChecked=0, Total=16256 [2022-03-01 15:50:28,792 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 866 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:28,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1834 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:50:28,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-03-01 15:50:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 2188. [2022-03-01 15:50:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.763145861911294) internal successors, (6043), 2187 states have internal predecessors, (6043), 0 states have call successors, (0), 0 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 15:50:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6043 transitions. [2022-03-01 15:50:28,857 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6043 transitions. Word has length 75 [2022-03-01 15:50:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:28,857 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6043 transitions. [2022-03-01 15:50:28,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:50:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6043 transitions. [2022-03-01 15:50:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:28,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:28,862 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, 1, 1, 1] [2022-03-01 15:50:28,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:29,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-01 15:50:29,076 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:29,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1037023166, now seen corresponding path program 5 times [2022-03-01 15:50:29,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:29,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020090696] [2022-03-01 15:50:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:29,208 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 15:50:29,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:29,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020090696] [2022-03-01 15:50:29,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020090696] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:29,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940030909] [2022-03-01 15:50:29,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:50:29,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:29,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:29,210 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 15:50:29,212 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 15:50:29,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:50:29,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:29,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:29,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:29,438 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 15:50:29,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:29,622 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 15:50:29,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940030909] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:29,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:29,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:29,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433074135] [2022-03-01 15:50:29,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:29,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:29,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:29,624 INFO L87 Difference]: Start difference. First operand 2188 states and 6043 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:50:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:31,937 INFO L93 Difference]: Finished difference Result 6064 states and 16644 transitions. [2022-03-01 15:50:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-01 15:50:31,937 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:50:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:31,952 INFO L225 Difference]: With dead ends: 6064 [2022-03-01 15:50:31,952 INFO L226 Difference]: Without dead ends: 5884 [2022-03-01 15:50:31,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1258, Invalid=6052, Unknown=0, NotChecked=0, Total=7310 [2022-03-01 15:50:31,955 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 524 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:31,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1817 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:50:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-03-01 15:50:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 2812. [2022-03-01 15:50:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 2.7812166488794023) internal successors, (7818), 2811 states have internal predecessors, (7818), 0 states have call successors, (0), 0 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 15:50:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 7818 transitions. [2022-03-01 15:50:32,054 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 7818 transitions. Word has length 75 [2022-03-01 15:50:32,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:32,054 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 7818 transitions. [2022-03-01 15:50:32,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:50:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 7818 transitions. [2022-03-01 15:50:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:32,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:32,060 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, 1, 1, 1] [2022-03-01 15:50:32,078 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 15:50:32,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-01 15:50:32,275 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash 994302006, now seen corresponding path program 6 times [2022-03-01 15:50:32,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:32,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501324462] [2022-03-01 15:50:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:32,375 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 15:50:32,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:32,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501324462] [2022-03-01 15:50:32,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501324462] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:32,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253858231] [2022-03-01 15:50:32,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:32,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:32,400 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 15:50:32,440 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 15:50:32,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:50:32,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:32,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:32,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:32,630 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 15:50:32,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:32,818 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 15:50:32,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253858231] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:32,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:32,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:50:32,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992215157] [2022-03-01 15:50:32,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:32,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:50:32,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:50:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:50:32,820 INFO L87 Difference]: Start difference. First operand 2812 states and 7818 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 15:50:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:34,593 INFO L93 Difference]: Finished difference Result 6577 states and 18166 transitions. [2022-03-01 15:50:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 15:50:34,594 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 75 [2022-03-01 15:50:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:34,644 INFO L225 Difference]: With dead ends: 6577 [2022-03-01 15:50:34,644 INFO L226 Difference]: Without dead ends: 6529 [2022-03-01 15:50:34,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1048, Invalid=5758, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 15:50:34,646 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 478 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:34,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1536 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:50:34,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2022-03-01 15:50:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 4004. [2022-03-01 15:50:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4003 states have (on average 2.8258805895578316) internal successors, (11312), 4003 states have internal predecessors, (11312), 0 states have call successors, (0), 0 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 15:50:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 11312 transitions. [2022-03-01 15:50:34,765 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 11312 transitions. Word has length 75 [2022-03-01 15:50:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:34,765 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 11312 transitions. [2022-03-01 15:50:34,766 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 15:50:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 11312 transitions. [2022-03-01 15:50:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:34,773 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:34,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:34,808 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 15:50:34,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-01 15:50:34,988 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1015019392, now seen corresponding path program 7 times [2022-03-01 15:50:34,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:34,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631967426] [2022-03-01 15:50:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:34,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:35,116 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 15:50:35,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:35,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631967426] [2022-03-01 15:50:35,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631967426] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:35,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251869298] [2022-03-01 15:50:35,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:35,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:35,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:35,118 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 15:50:35,118 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 15:50:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:35,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:35,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:35,351 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 15:50:35,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:35,574 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 15:50:35,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251869298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:35,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:35,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:35,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141665302] [2022-03-01 15:50:35,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:35,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:35,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:35,576 INFO L87 Difference]: Start difference. First operand 4004 states and 11312 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:50:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:38,743 INFO L93 Difference]: Finished difference Result 7727 states and 21227 transitions. [2022-03-01 15:50:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-01 15:50:38,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 75 [2022-03-01 15:50:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:38,757 INFO L225 Difference]: With dead ends: 7727 [2022-03-01 15:50:38,758 INFO L226 Difference]: Without dead ends: 7667 [2022-03-01 15:50:38,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4567 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2049, Invalid=10161, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 15:50:38,762 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 812 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:38,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1704 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:50:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2022-03-01 15:50:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 4036. [2022-03-01 15:50:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 4035 states have (on average 2.825278810408922) internal successors, (11400), 4035 states have internal predecessors, (11400), 0 states have call successors, (0), 0 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 15:50:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 11400 transitions. [2022-03-01 15:50:38,897 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 11400 transitions. Word has length 75 [2022-03-01 15:50:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:38,897 INFO L470 AbstractCegarLoop]: Abstraction has 4036 states and 11400 transitions. [2022-03-01 15:50:38,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:50:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 11400 transitions. [2022-03-01 15:50:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:38,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:38,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:38,938 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 15:50:39,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:39,139 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:39,139 INFO L85 PathProgramCache]: Analyzing trace with hash 616790434, now seen corresponding path program 8 times [2022-03-01 15:50:39,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:39,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486209742] [2022-03-01 15:50:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:39,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:39,242 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 15:50:39,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:39,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486209742] [2022-03-01 15:50:39,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486209742] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:39,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533623219] [2022-03-01 15:50:39,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:39,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:39,244 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 15:50:39,245 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 15:50:39,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:39,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:39,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:39,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:39,461 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 15:50:39,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:39,658 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 15:50:39,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533623219] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:39,659 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:39,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:50:39,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241204948] [2022-03-01 15:50:39,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:39,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:50:39,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:50:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:50:39,660 INFO L87 Difference]: Start difference. First operand 4036 states and 11400 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 15:50:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:42,164 INFO L93 Difference]: Finished difference Result 7437 states and 20688 transitions. [2022-03-01 15:50:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-01 15:50:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 75 [2022-03-01 15:50:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:42,181 INFO L225 Difference]: With dead ends: 7437 [2022-03-01 15:50:42,181 INFO L226 Difference]: Without dead ends: 7332 [2022-03-01 15:50:42,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4055 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1699, Invalid=9431, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 15:50:42,183 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 628 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:42,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1387 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:50:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2022-03-01 15:50:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 4376. [2022-03-01 15:50:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 2.824) internal successors, (12355), 4375 states have internal predecessors, (12355), 0 states have call successors, (0), 0 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 15:50:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 12355 transitions. [2022-03-01 15:50:42,386 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 12355 transitions. Word has length 75 [2022-03-01 15:50:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:42,386 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 12355 transitions. [2022-03-01 15:50:42,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 15:50:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 12355 transitions. [2022-03-01 15:50:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:42,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:42,396 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, 1, 1, 1] [2022-03-01 15:50:42,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-01 15:50:42,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:42,611 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash -790464616, now seen corresponding path program 9 times [2022-03-01 15:50:42,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:42,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082862360] [2022-03-01 15:50:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:42,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:42,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:42,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082862360] [2022-03-01 15:50:42,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082862360] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:42,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113617489] [2022-03-01 15:50:42,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:42,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:42,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:42,715 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 15:50:42,732 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 15:50:42,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:50:42,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:42,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:42,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:42,922 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 15:50:42,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:43,102 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 15:50:43,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113617489] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:43,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:43,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:50:43,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979343736] [2022-03-01 15:50:43,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:43,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:50:43,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:50:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:50:43,104 INFO L87 Difference]: Start difference. First operand 4376 states and 12355 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 15:50:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:44,432 INFO L93 Difference]: Finished difference Result 7236 states and 20083 transitions. [2022-03-01 15:50:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 15:50:44,432 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 75 [2022-03-01 15:50:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:44,443 INFO L225 Difference]: With dead ends: 7236 [2022-03-01 15:50:44,443 INFO L226 Difference]: Without dead ends: 7188 [2022-03-01 15:50:44,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=676, Invalid=2984, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 15:50:44,445 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 542 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:44,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1178 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:50:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2022-03-01 15:50:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 5152. [2022-03-01 15:50:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5151 states have (on average 2.839254513686663) internal successors, (14625), 5151 states have internal predecessors, (14625), 0 states have call successors, (0), 0 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 15:50:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 14625 transitions. [2022-03-01 15:50:44,545 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 14625 transitions. Word has length 75 [2022-03-01 15:50:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:44,546 INFO L470 AbstractCegarLoop]: Abstraction has 5152 states and 14625 transitions. [2022-03-01 15:50:44,546 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 15:50:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 14625 transitions. [2022-03-01 15:50:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:44,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:44,556 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, 1, 1, 1] [2022-03-01 15:50:44,589 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 15:50:44,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:44,761 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash -769747230, now seen corresponding path program 10 times [2022-03-01 15:50:44,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:44,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479186076] [2022-03-01 15:50:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:44,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:44,878 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 15:50:44,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:44,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479186076] [2022-03-01 15:50:44,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479186076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:44,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637951272] [2022-03-01 15:50:44,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:44,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:44,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:44,880 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 15:50:44,881 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 15:50:44,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:44,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:44,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:44,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:45,083 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 15:50:45,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:45,265 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 15:50:45,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637951272] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:45,265 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:45,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:45,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821769415] [2022-03-01 15:50:45,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:45,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:45,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:45,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:45,266 INFO L87 Difference]: Start difference. First operand 5152 states and 14625 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:50:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:47,363 INFO L93 Difference]: Finished difference Result 8235 states and 22815 transitions. [2022-03-01 15:50:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 15:50:47,363 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 75 [2022-03-01 15:50:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:47,386 INFO L225 Difference]: With dead ends: 8235 [2022-03-01 15:50:47,386 INFO L226 Difference]: Without dead ends: 8175 [2022-03-01 15:50:47,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1162, Invalid=5158, Unknown=0, NotChecked=0, Total=6320 [2022-03-01 15:50:47,388 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:47,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1395 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:50:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2022-03-01 15:50:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 5464. [2022-03-01 15:50:47,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5464 states, 5463 states have (on average 2.8407468423942888) internal successors, (15519), 5463 states have internal predecessors, (15519), 0 states have call successors, (0), 0 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 15:50:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 15519 transitions. [2022-03-01 15:50:47,557 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 15519 transitions. Word has length 75 [2022-03-01 15:50:47,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:47,557 INFO L470 AbstractCegarLoop]: Abstraction has 5464 states and 15519 transitions. [2022-03-01 15:50:47,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:50:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 15519 transitions. [2022-03-01 15:50:47,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:47,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:47,567 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, 1, 1, 1] [2022-03-01 15:50:47,584 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 15:50:47,783 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,SelfDestructingSolverStorable20 [2022-03-01 15:50:47,784 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:47,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1088159336, now seen corresponding path program 11 times [2022-03-01 15:50:47,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:47,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529657295] [2022-03-01 15:50:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:47,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:47,873 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 15:50:47,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:47,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529657295] [2022-03-01 15:50:47,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529657295] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:47,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714820418] [2022-03-01 15:50:47,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:50:47,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:47,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:47,875 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 15:50:47,885 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 15:50:47,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:47,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:47,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:47,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:48,123 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 15:50:48,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:48,316 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 15:50:48,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714820418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:48,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:48,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:50:48,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828595411] [2022-03-01 15:50:48,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:48,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:50:48,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:50:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:50:48,317 INFO L87 Difference]: Start difference. First operand 5464 states and 15519 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 15:50:49,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:49,027 INFO L93 Difference]: Finished difference Result 6404 states and 18019 transitions. [2022-03-01 15:50:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 15:50:49,027 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 75 [2022-03-01 15:50:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:49,037 INFO L225 Difference]: With dead ends: 6404 [2022-03-01 15:50:49,038 INFO L226 Difference]: Without dead ends: 6332 [2022-03-01 15:50:49,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:50:49,039 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 273 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:49,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1549 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2022-03-01 15:50:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 5584. [2022-03-01 15:50:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 2.8366469639978504) internal successors, (15837), 5583 states have internal predecessors, (15837), 0 states have call successors, (0), 0 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 15:50:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 15837 transitions. [2022-03-01 15:50:49,174 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 15837 transitions. Word has length 75 [2022-03-01 15:50:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:49,174 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 15837 transitions. [2022-03-01 15:50:49,174 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 15:50:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 15837 transitions. [2022-03-01 15:50:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:49,183 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:49,183 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, 1, 1, 1] [2022-03-01 15:50:49,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-01 15:50:49,397 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,SelfDestructingSolverStorable21 [2022-03-01 15:50:49,398 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 723432570, now seen corresponding path program 12 times [2022-03-01 15:50:49,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:49,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186887575] [2022-03-01 15:50:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:49,524 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 15:50:49,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:49,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186887575] [2022-03-01 15:50:49,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186887575] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:49,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287376795] [2022-03-01 15:50:49,524 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:49,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:49,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:49,525 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 15:50:49,526 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 15:50:49,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:50:49,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:49,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:49,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:49,733 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 15:50:49,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:49,950 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 15:50:49,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287376795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:49,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:49,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:50:49,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398211932] [2022-03-01 15:50:49,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:49,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:50:49,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:50:49,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:50:49,951 INFO L87 Difference]: Start difference. First operand 5584 states and 15837 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 15:50:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:51,177 INFO L93 Difference]: Finished difference Result 7773 states and 21686 transitions. [2022-03-01 15:50:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:50:51,177 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 75 [2022-03-01 15:50:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:51,190 INFO L225 Difference]: With dead ends: 7773 [2022-03-01 15:50:51,191 INFO L226 Difference]: Without dead ends: 7725 [2022-03-01 15:50:51,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=680, Invalid=3102, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 15:50:51,192 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 461 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:51,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1128 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7725 states. [2022-03-01 15:50:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7725 to 6084. [2022-03-01 15:50:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 2.842018740752918) internal successors, (17288), 6083 states have internal predecessors, (17288), 0 states have call successors, (0), 0 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 15:50:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 17288 transitions. [2022-03-01 15:50:51,323 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 17288 transitions. Word has length 75 [2022-03-01 15:50:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:51,323 INFO L470 AbstractCegarLoop]: Abstraction has 6084 states and 17288 transitions. [2022-03-01 15:50:51,323 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 15:50:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 17288 transitions. [2022-03-01 15:50:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:51,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:51,334 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, 1, 1, 1] [2022-03-01 15:50:51,365 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 15:50:51,551 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,SelfDestructingSolverStorable22 [2022-03-01 15:50:51,551 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash 744149956, now seen corresponding path program 13 times [2022-03-01 15:50:51,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:51,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412677385] [2022-03-01 15:50:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:51,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:51,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412677385] [2022-03-01 15:50:51,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412677385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:51,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841505195] [2022-03-01 15:50:51,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:51,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:51,652 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 15:50:51,653 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 15:50:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:51,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:51,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:51,856 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 15:50:51,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:52,043 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 15:50:52,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841505195] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:52,044 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:52,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:52,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45169897] [2022-03-01 15:50:52,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:52,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:52,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:52,045 INFO L87 Difference]: Start difference. First operand 6084 states and 17288 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:50:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:54,809 INFO L93 Difference]: Finished difference Result 9659 states and 26854 transitions. [2022-03-01 15:50:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-01 15:50:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 75 [2022-03-01 15:50:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:54,824 INFO L225 Difference]: With dead ends: 9659 [2022-03-01 15:50:54,824 INFO L226 Difference]: Without dead ends: 9599 [2022-03-01 15:50:54,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3599 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1688, Invalid=8212, Unknown=0, NotChecked=0, Total=9900 [2022-03-01 15:50:54,829 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 555 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:54,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 1989 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:50:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2022-03-01 15:50:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 6296. [2022-03-01 15:50:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 6295 states have (on average 2.845909451945989) internal successors, (17915), 6295 states have internal predecessors, (17915), 0 states have call successors, (0), 0 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 15:50:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 17915 transitions. [2022-03-01 15:50:54,972 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 17915 transitions. Word has length 75 [2022-03-01 15:50:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:54,972 INFO L470 AbstractCegarLoop]: Abstraction has 6296 states and 17915 transitions. [2022-03-01 15:50:54,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:50:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 17915 transitions. [2022-03-01 15:50:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:54,984 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:54,984 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, 1, 1, 1] [2022-03-01 15:50:55,005 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 15:50:55,202 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,SelfDestructingSolverStorable23 [2022-03-01 15:50:55,202 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash 345920998, now seen corresponding path program 14 times [2022-03-01 15:50:55,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:55,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65447440] [2022-03-01 15:50:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:55,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:55,337 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 15:50:55,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:55,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65447440] [2022-03-01 15:50:55,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65447440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:55,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90065701] [2022-03-01 15:50:55,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:55,344 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 15:50:55,378 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 15:50:55,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:55,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:55,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:55,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:55,552 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 15:50:55,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:55,736 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 15:50:55,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90065701] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:55,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:55,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:50:55,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765535095] [2022-03-01 15:50:55,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:55,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:50:55,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:50:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:50:55,738 INFO L87 Difference]: Start difference. First operand 6296 states and 17915 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 15:50:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:57,422 INFO L93 Difference]: Finished difference Result 9212 states and 25881 transitions. [2022-03-01 15:50:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 15:50:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 75 [2022-03-01 15:50:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:57,437 INFO L225 Difference]: With dead ends: 9212 [2022-03-01 15:50:57,437 INFO L226 Difference]: Without dead ends: 9107 [2022-03-01 15:50:57,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1097, Invalid=5065, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:50:57,441 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 507 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:57,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1529 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:50:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2022-03-01 15:50:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 6668. [2022-03-01 15:50:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 2.8447577621118945) internal successors, (18966), 6667 states have internal predecessors, (18966), 0 states have call successors, (0), 0 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 15:50:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 18966 transitions. [2022-03-01 15:50:57,627 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 18966 transitions. Word has length 75 [2022-03-01 15:50:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:57,627 INFO L470 AbstractCegarLoop]: Abstraction has 6668 states and 18966 transitions. [2022-03-01 15:50:57,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 15:50:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 18966 transitions. [2022-03-01 15:50:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:57,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:57,641 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, 1, 1, 1] [2022-03-01 15:50:57,659 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 15:50:57,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:57,856 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1061334052, now seen corresponding path program 15 times [2022-03-01 15:50:57,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:57,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183111767] [2022-03-01 15:50:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:57,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:57,999 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 15:50:57,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:57,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183111767] [2022-03-01 15:50:57,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183111767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:57,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134177642] [2022-03-01 15:50:58,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:58,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:58,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:58,012 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 15:50:58,013 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 15:50:58,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:50:58,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:58,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:50:58,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:58,224 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 15:50:58,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:58,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134177642] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:58,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:58,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:50:58,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104395698] [2022-03-01 15:50:58,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:58,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:50:58,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:50:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:50:58,395 INFO L87 Difference]: Start difference. First operand 6668 states and 18966 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 15:50:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:59,810 INFO L93 Difference]: Finished difference Result 10227 states and 28654 transitions. [2022-03-01 15:50:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 15:50:59,811 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 75 [2022-03-01 15:50:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:59,826 INFO L225 Difference]: With dead ends: 10227 [2022-03-01 15:50:59,827 INFO L226 Difference]: Without dead ends: 10179 [2022-03-01 15:50:59,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=790, Invalid=3632, Unknown=0, NotChecked=0, Total=4422 [2022-03-01 15:50:59,828 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 503 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:59,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1442 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:50:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2022-03-01 15:50:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 7688. [2022-03-01 15:50:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 7687 states have (on average 2.8477949785351893) internal successors, (21891), 7687 states have internal predecessors, (21891), 0 states have call successors, (0), 0 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 15:50:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 21891 transitions. [2022-03-01 15:50:59,968 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 21891 transitions. Word has length 75 [2022-03-01 15:50:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:59,968 INFO L470 AbstractCegarLoop]: Abstraction has 7688 states and 21891 transitions. [2022-03-01 15:50:59,968 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 15:50:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 21891 transitions. [2022-03-01 15:50:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:50:59,979 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:59,979 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, 1, 1, 1] [2022-03-01 15:50:59,995 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 15:51:00,195 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,SelfDestructingSolverStorable25 [2022-03-01 15:51:00,195 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:00,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1040616666, now seen corresponding path program 16 times [2022-03-01 15:51:00,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:00,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612215907] [2022-03-01 15:51:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:00,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:00,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:00,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612215907] [2022-03-01 15:51:00,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612215907] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:00,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989613467] [2022-03-01 15:51:00,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:51:00,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:00,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:00,295 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 15:51:00,331 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 15:51:00,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:51:00,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:00,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:00,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:00,515 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 15:51:00,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:00,702 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 15:51:00,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989613467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:00,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:00,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:00,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486993902] [2022-03-01 15:51:00,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:00,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:00,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:00,703 INFO L87 Difference]: Start difference. First operand 7688 states and 21891 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:51:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:03,094 INFO L93 Difference]: Finished difference Result 11197 states and 31292 transitions. [2022-03-01 15:51:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 15:51:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 75 [2022-03-01 15:51:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:03,115 INFO L225 Difference]: With dead ends: 11197 [2022-03-01 15:51:03,115 INFO L226 Difference]: Without dead ends: 11137 [2022-03-01 15:51:03,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1413, Invalid=6597, Unknown=0, NotChecked=0, Total=8010 [2022-03-01 15:51:03,116 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 727 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:03,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 1483 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:03,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2022-03-01 15:51:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 7824. [2022-03-01 15:51:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7824 states, 7823 states have (on average 2.8491627252972007) internal successors, (22289), 7823 states have internal predecessors, (22289), 0 states have call successors, (0), 0 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 15:51:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7824 states to 7824 states and 22289 transitions. [2022-03-01 15:51:03,294 INFO L78 Accepts]: Start accepts. Automaton has 7824 states and 22289 transitions. Word has length 75 [2022-03-01 15:51:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:03,294 INFO L470 AbstractCegarLoop]: Abstraction has 7824 states and 22289 transitions. [2022-03-01 15:51:03,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:51:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7824 states and 22289 transitions. [2022-03-01 15:51:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:03,307 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:03,307 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, 1, 1, 1] [2022-03-01 15:51:03,325 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 15:51:03,524 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,SelfDestructingSolverStorable26 [2022-03-01 15:51:03,525 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:03,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1359028772, now seen corresponding path program 17 times [2022-03-01 15:51:03,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:03,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35373821] [2022-03-01 15:51:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:03,626 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 15:51:03,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:03,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35373821] [2022-03-01 15:51:03,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35373821] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:03,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945010813] [2022-03-01 15:51:03,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:51:03,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:03,628 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 15:51:03,629 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 15:51:03,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:51:03,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:03,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:03,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:03,847 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 15:51:03,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:04,054 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 15:51:04,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945010813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:04,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:04,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:51:04,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110706498] [2022-03-01 15:51:04,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:04,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:51:04,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:51:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:51:04,056 INFO L87 Difference]: Start difference. First operand 7824 states and 22289 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 15:51:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:04,890 INFO L93 Difference]: Finished difference Result 8740 states and 24715 transitions. [2022-03-01 15:51:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 15:51:04,890 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 75 [2022-03-01 15:51:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:04,906 INFO L225 Difference]: With dead ends: 8740 [2022-03-01 15:51:04,906 INFO L226 Difference]: Without dead ends: 8668 [2022-03-01 15:51:04,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=2037, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 15:51:04,907 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 297 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:04,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1369 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:51:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2022-03-01 15:51:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 7940. [2022-03-01 15:51:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7940 states, 7939 states have (on average 2.846706134273838) internal successors, (22600), 7939 states have internal predecessors, (22600), 0 states have call successors, (0), 0 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 15:51:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7940 states to 7940 states and 22600 transitions. [2022-03-01 15:51:05,045 INFO L78 Accepts]: Start accepts. Automaton has 7940 states and 22600 transitions. Word has length 75 [2022-03-01 15:51:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:05,045 INFO L470 AbstractCegarLoop]: Abstraction has 7940 states and 22600 transitions. [2022-03-01 15:51:05,045 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 15:51:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 7940 states and 22600 transitions. [2022-03-01 15:51:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:05,056 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:05,056 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, 1, 1, 1] [2022-03-01 15:51:05,072 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 15:51:05,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-01 15:51:05,270 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1556288346, now seen corresponding path program 18 times [2022-03-01 15:51:05,271 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:05,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718450986] [2022-03-01 15:51:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:05,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:05,408 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 15:51:05,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:05,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718450986] [2022-03-01 15:51:05,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718450986] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:05,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410762580] [2022-03-01 15:51:05,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:51:05,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:05,420 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 15:51:05,428 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 15:51:05,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:51:05,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:05,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:05,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:05,667 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 15:51:05,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:05,858 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 15:51:05,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410762580] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:05,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:05,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:05,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62128488] [2022-03-01 15:51:05,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:05,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:05,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:05,860 INFO L87 Difference]: Start difference. First operand 7940 states and 22600 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:51:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:07,125 INFO L93 Difference]: Finished difference Result 12785 states and 36011 transitions. [2022-03-01 15:51:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 15:51:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:07,148 INFO L225 Difference]: With dead ends: 12785 [2022-03-01 15:51:07,148 INFO L226 Difference]: Without dead ends: 12737 [2022-03-01 15:51:07,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=756, Invalid=3026, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 15:51:07,149 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 606 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:07,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1422 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:51:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states. [2022-03-01 15:51:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 9228. [2022-03-01 15:51:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9227 states have (on average 2.849680286116831) internal successors, (26294), 9227 states have internal predecessors, (26294), 0 states have call successors, (0), 0 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 15:51:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 26294 transitions. [2022-03-01 15:51:07,330 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 26294 transitions. Word has length 75 [2022-03-01 15:51:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:07,330 INFO L470 AbstractCegarLoop]: Abstraction has 9228 states and 26294 transitions. [2022-03-01 15:51:07,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 15:51:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 26294 transitions. [2022-03-01 15:51:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:07,343 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:07,343 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, 1, 1, 1] [2022-03-01 15:51:07,360 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 15:51:07,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-01 15:51:07,559 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1535570960, now seen corresponding path program 19 times [2022-03-01 15:51:07,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:07,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581894625] [2022-03-01 15:51:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:07,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:07,662 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 15:51:07,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:07,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581894625] [2022-03-01 15:51:07,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581894625] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:07,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729382211] [2022-03-01 15:51:07,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:51:07,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:07,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:07,663 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 15:51:07,695 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 15:51:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:07,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:07,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:07,886 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 15:51:07,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:08,069 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 15:51:08,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729382211] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:08,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:08,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-01 15:51:08,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866809151] [2022-03-01 15:51:08,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:08,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:51:08,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:08,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:51:08,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:51:08,070 INFO L87 Difference]: Start difference. First operand 9228 states and 26294 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 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 15:51:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:09,884 INFO L93 Difference]: Finished difference Result 13632 states and 38321 transitions. [2022-03-01 15:51:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 15:51:09,885 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 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 75 [2022-03-01 15:51:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:09,910 INFO L225 Difference]: With dead ends: 13632 [2022-03-01 15:51:09,910 INFO L226 Difference]: Without dead ends: 13572 [2022-03-01 15:51:09,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1291, Invalid=5351, Unknown=0, NotChecked=0, Total=6642 [2022-03-01 15:51:09,912 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 720 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:09,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 1610 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:51:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13572 states. [2022-03-01 15:51:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13572 to 9472. [2022-03-01 15:51:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9472 states, 9471 states have (on average 2.851335656213705) internal successors, (27005), 9471 states have internal predecessors, (27005), 0 states have call successors, (0), 0 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 15:51:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 27005 transitions. [2022-03-01 15:51:10,119 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 27005 transitions. Word has length 75 [2022-03-01 15:51:10,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:10,119 INFO L470 AbstractCegarLoop]: Abstraction has 9472 states and 27005 transitions. [2022-03-01 15:51:10,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 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 15:51:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 27005 transitions. [2022-03-01 15:51:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:10,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:10,133 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, 1, 1, 1] [2022-03-01 15:51:10,151 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 15:51:10,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:10,352 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:10,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1853983066, now seen corresponding path program 20 times [2022-03-01 15:51:10,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:10,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422413171] [2022-03-01 15:51:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:10,450 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 15:51:10,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:10,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422413171] [2022-03-01 15:51:10,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422413171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:10,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041851292] [2022-03-01 15:51:10,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:51:10,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:10,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:10,452 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 15:51:10,453 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 15:51:10,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:51:10,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:10,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:10,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:10,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:10,887 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 15:51:10,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041851292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:10,887 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:10,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:51:10,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061769229] [2022-03-01 15:51:10,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:10,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:51:10,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:51:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:51:10,888 INFO L87 Difference]: Start difference. First operand 9472 states and 27005 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 15:51:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:11,661 INFO L93 Difference]: Finished difference Result 10784 states and 30439 transitions. [2022-03-01 15:51:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 15:51:11,662 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 75 [2022-03-01 15:51:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:11,683 INFO L225 Difference]: With dead ends: 10784 [2022-03-01 15:51:11,684 INFO L226 Difference]: Without dead ends: 10712 [2022-03-01 15:51:11,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:51:11,684 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 374 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:11,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1296 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:51:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10712 states. [2022-03-01 15:51:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10712 to 9616. [2022-03-01 15:51:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9616 states, 9615 states have (on average 2.8510660426417056) internal successors, (27413), 9615 states have internal predecessors, (27413), 0 states have call successors, (0), 0 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 15:51:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 27413 transitions. [2022-03-01 15:51:11,874 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 27413 transitions. Word has length 75 [2022-03-01 15:51:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:11,875 INFO L470 AbstractCegarLoop]: Abstraction has 9616 states and 27413 transitions. [2022-03-01 15:51:11,875 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 15:51:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 27413 transitions. [2022-03-01 15:51:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:11,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:11,914 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, 1, 1, 1] [2022-03-01 15:51:11,935 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 15:51:12,114 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,SelfDestructingSolverStorable30 [2022-03-01 15:51:12,115 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1620543276, now seen corresponding path program 21 times [2022-03-01 15:51:12,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:12,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454743138] [2022-03-01 15:51:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:12,219 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 15:51:12,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:12,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454743138] [2022-03-01 15:51:12,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454743138] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:12,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587711531] [2022-03-01 15:51:12,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:51:12,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:12,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:12,220 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 15:51:12,224 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 15:51:12,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:51:12,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:12,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:12,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:12,445 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 15:51:12,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:12,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587711531] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:12,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:12,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:51:12,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201363188] [2022-03-01 15:51:12,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:12,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:51:12,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:51:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:51:12,621 INFO L87 Difference]: Start difference. First operand 9616 states and 27413 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 15:51:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:13,041 INFO L93 Difference]: Finished difference Result 10060 states and 28541 transitions. [2022-03-01 15:51:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:51:13,041 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 75 [2022-03-01 15:51:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:13,059 INFO L225 Difference]: With dead ends: 10060 [2022-03-01 15:51:13,059 INFO L226 Difference]: Without dead ends: 10012 [2022-03-01 15:51:13,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:51:13,060 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 247 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:13,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 956 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:51:13,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2022-03-01 15:51:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9640. [2022-03-01 15:51:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9640 states, 9639 states have (on average 2.8495694574125947) internal successors, (27467), 9639 states have internal predecessors, (27467), 0 states have call successors, (0), 0 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 15:51:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9640 states to 9640 states and 27467 transitions. [2022-03-01 15:51:13,231 INFO L78 Accepts]: Start accepts. Automaton has 9640 states and 27467 transitions. Word has length 75 [2022-03-01 15:51:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:13,231 INFO L470 AbstractCegarLoop]: Abstraction has 9640 states and 27467 transitions. [2022-03-01 15:51:13,231 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 15:51:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states and 27467 transitions. [2022-03-01 15:51:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:13,244 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:13,244 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, 1, 1, 1] [2022-03-01 15:51:13,262 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 15:51:13,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:13,460 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1305078476, now seen corresponding path program 22 times [2022-03-01 15:51:13,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:13,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507148599] [2022-03-01 15:51:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:13,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:13,595 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 15:51:13,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:13,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507148599] [2022-03-01 15:51:13,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507148599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:13,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221524401] [2022-03-01 15:51:13,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:51:13,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:13,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:13,599 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 15:51:13,607 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 15:51:13,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:51:13,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:13,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:13,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:13,824 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 15:51:13,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:14,009 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 15:51:14,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221524401] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:14,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:14,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:14,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330064396] [2022-03-01 15:51:14,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:14,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:14,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:14,012 INFO L87 Difference]: Start difference. First operand 9640 states and 27467 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 15:51:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:15,082 INFO L93 Difference]: Finished difference Result 13911 states and 39419 transitions. [2022-03-01 15:51:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-01 15:51:15,082 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 75 [2022-03-01 15:51:15,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:15,160 INFO L225 Difference]: With dead ends: 13911 [2022-03-01 15:51:15,160 INFO L226 Difference]: Without dead ends: 13887 [2022-03-01 15:51:15,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=891, Invalid=4365, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 15:51:15,161 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 808 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:15,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 1347 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:51:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2022-03-01 15:51:15,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 9952. [2022-03-01 15:51:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9952 states, 9951 states have (on average 2.8531805848658425) internal successors, (28392), 9951 states have internal predecessors, (28392), 0 states have call successors, (0), 0 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 15:51:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9952 states to 9952 states and 28392 transitions. [2022-03-01 15:51:15,366 INFO L78 Accepts]: Start accepts. Automaton has 9952 states and 28392 transitions. Word has length 75 [2022-03-01 15:51:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:15,366 INFO L470 AbstractCegarLoop]: Abstraction has 9952 states and 28392 transitions. [2022-03-01 15:51:15,366 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 15:51:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 9952 states and 28392 transitions. [2022-03-01 15:51:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:15,380 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:15,380 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, 1, 1, 1] [2022-03-01 15:51:15,396 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 15:51:15,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:15,595 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361090, now seen corresponding path program 23 times [2022-03-01 15:51:15,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:15,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517464060] [2022-03-01 15:51:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:15,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:15,691 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 15:51:15,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:15,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517464060] [2022-03-01 15:51:15,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517464060] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:15,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149014325] [2022-03-01 15:51:15,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:51:15,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:15,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:15,692 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 15:51:15,693 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 15:51:15,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:51:15,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:15,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 15:51:15,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:15,959 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 15:51:15,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:16,220 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 15:51:16,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149014325] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:16,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:16,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-01 15:51:16,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906783891] [2022-03-01 15:51:16,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:16,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 15:51:16,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:16,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 15:51:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-03-01 15:51:16,222 INFO L87 Difference]: Start difference. First operand 9952 states and 28392 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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 15:51:18,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:18,735 INFO L93 Difference]: Finished difference Result 14859 states and 41765 transitions. [2022-03-01 15:51:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 15:51:18,736 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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 75 [2022-03-01 15:51:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:18,765 INFO L225 Difference]: With dead ends: 14859 [2022-03-01 15:51:18,766 INFO L226 Difference]: Without dead ends: 14814 [2022-03-01 15:51:18,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1567, Invalid=7175, Unknown=0, NotChecked=0, Total=8742 [2022-03-01 15:51:18,772 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1420 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:18,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 1976 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:51:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14814 states. [2022-03-01 15:51:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14814 to 9836. [2022-03-01 15:51:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9835 states have (on average 2.85246568378241) internal successors, (28054), 9835 states have internal predecessors, (28054), 0 states have call successors, (0), 0 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 15:51:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 28054 transitions. [2022-03-01 15:51:18,972 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 28054 transitions. Word has length 75 [2022-03-01 15:51:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:18,972 INFO L470 AbstractCegarLoop]: Abstraction has 9836 states and 28054 transitions. [2022-03-01 15:51:18,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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 15:51:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 28054 transitions. [2022-03-01 15:51:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:18,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:18,986 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, 1, 1, 1] [2022-03-01 15:51:19,005 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 15:51:19,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:19,199 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:19,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1906375620, now seen corresponding path program 24 times [2022-03-01 15:51:19,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:19,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689775592] [2022-03-01 15:51:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:19,275 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 15:51:19,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:19,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689775592] [2022-03-01 15:51:19,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689775592] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:19,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349172493] [2022-03-01 15:51:19,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:51:19,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:19,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:19,284 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 15:51:19,285 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 15:51:19,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:51:19,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:19,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:19,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:19,498 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 15:51:19,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:19,672 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 15:51:19,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349172493] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:19,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:19,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:19,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443881741] [2022-03-01 15:51:19,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:19,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:19,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:19,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:19,674 INFO L87 Difference]: Start difference. First operand 9836 states and 28054 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:21,323 INFO L93 Difference]: Finished difference Result 13587 states and 38339 transitions. [2022-03-01 15:51:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 15:51:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:21,347 INFO L225 Difference]: With dead ends: 13587 [2022-03-01 15:51:21,347 INFO L226 Difference]: Without dead ends: 13512 [2022-03-01 15:51:21,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1294, Invalid=6362, Unknown=0, NotChecked=0, Total=7656 [2022-03-01 15:51:21,349 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 625 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:21,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2063 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:51:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2022-03-01 15:51:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 10124. [2022-03-01 15:51:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.854292205867826) internal successors, (28894), 10123 states have internal predecessors, (28894), 0 states have call successors, (0), 0 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 15:51:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28894 transitions. [2022-03-01 15:51:21,543 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28894 transitions. Word has length 75 [2022-03-01 15:51:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:21,543 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28894 transitions. [2022-03-01 15:51:21,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28894 transitions. [2022-03-01 15:51:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:21,557 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:21,557 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, 1, 1, 1] [2022-03-01 15:51:21,575 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 15:51:21,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:21,762 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1356812648, now seen corresponding path program 25 times [2022-03-01 15:51:21,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:21,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898772943] [2022-03-01 15:51:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:21,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:21,844 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 15:51:21,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:21,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898772943] [2022-03-01 15:51:21,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898772943] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:21,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548196629] [2022-03-01 15:51:21,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:51:21,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:21,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:21,845 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 15:51:21,847 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 15:51:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:21,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:21,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:22,088 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 15:51:22,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:22,263 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 15:51:22,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548196629] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:22,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:22,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:51:22,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306949056] [2022-03-01 15:51:22,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:22,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:51:22,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:22,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:51:22,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:51:22,265 INFO L87 Difference]: Start difference. First operand 10124 states and 28894 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 15:51:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:23,208 INFO L93 Difference]: Finished difference Result 13500 states and 38140 transitions. [2022-03-01 15:51:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 15:51:23,208 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 75 [2022-03-01 15:51:23,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:23,235 INFO L225 Difference]: With dead ends: 13500 [2022-03-01 15:51:23,235 INFO L226 Difference]: Without dead ends: 13410 [2022-03-01 15:51:23,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=927, Invalid=4185, Unknown=0, NotChecked=0, Total=5112 [2022-03-01 15:51:23,245 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 523 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:23,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1915 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:51:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13410 states. [2022-03-01 15:51:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13410 to 10124. [2022-03-01 15:51:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.8531067865257334) internal successors, (28882), 10123 states have internal predecessors, (28882), 0 states have call successors, (0), 0 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 15:51:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28882 transitions. [2022-03-01 15:51:23,530 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28882 transitions. Word has length 75 [2022-03-01 15:51:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:23,530 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28882 transitions. [2022-03-01 15:51:23,530 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 15:51:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28882 transitions. [2022-03-01 15:51:23,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:23,544 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:23,544 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, 1, 1, 1] [2022-03-01 15:51:23,562 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 15:51:23,759 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,SelfDestructingSolverStorable35 [2022-03-01 15:51:23,759 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1594629350, now seen corresponding path program 26 times [2022-03-01 15:51:23,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:23,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817153781] [2022-03-01 15:51:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:23,833 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 15:51:23,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:23,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817153781] [2022-03-01 15:51:23,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817153781] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:23,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928187193] [2022-03-01 15:51:23,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:51:23,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:23,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:23,844 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 15:51:23,903 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 15:51:24,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:51:24,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:24,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:24,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:24,142 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 15:51:24,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:24,331 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 15:51:24,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928187193] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:24,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:24,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-01 15:51:24,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544983924] [2022-03-01 15:51:24,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:24,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 15:51:24,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 15:51:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:51:24,332 INFO L87 Difference]: Start difference. First operand 10124 states and 28882 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 15:51:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:25,322 INFO L93 Difference]: Finished difference Result 13442 states and 38145 transitions. [2022-03-01 15:51:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:51:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 75 [2022-03-01 15:51:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:25,354 INFO L225 Difference]: With dead ends: 13442 [2022-03-01 15:51:25,354 INFO L226 Difference]: Without dead ends: 13382 [2022-03-01 15:51:25,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=678, Invalid=2628, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 15:51:25,355 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 522 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:25,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1622 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:51:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13382 states. [2022-03-01 15:51:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13382 to 10064. [2022-03-01 15:51:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 10063 states have (on average 2.8505415879956275) internal successors, (28685), 10063 states have internal predecessors, (28685), 0 states have call successors, (0), 0 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 15:51:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 28685 transitions. [2022-03-01 15:51:25,644 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 28685 transitions. Word has length 75 [2022-03-01 15:51:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:25,645 INFO L470 AbstractCegarLoop]: Abstraction has 10064 states and 28685 transitions. [2022-03-01 15:51:25,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 15:51:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 28685 transitions. [2022-03-01 15:51:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:25,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:25,658 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, 1, 1, 1] [2022-03-01 15:51:25,677 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 15:51:25,874 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,SelfDestructingSolverStorable36 [2022-03-01 15:51:25,874 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:25,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1909193570, now seen corresponding path program 27 times [2022-03-01 15:51:25,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:25,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334088839] [2022-03-01 15:51:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:26,024 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 15:51:26,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:26,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334088839] [2022-03-01 15:51:26,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334088839] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:26,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459895757] [2022-03-01 15:51:26,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:51:26,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:26,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:26,037 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 15:51:26,059 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 15:51:26,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:51:26,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:26,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:26,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:26,388 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 15:51:26,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:26,620 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 15:51:26,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459895757] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:26,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:26,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:26,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79515051] [2022-03-01 15:51:26,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:26,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:26,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:26,622 INFO L87 Difference]: Start difference. First operand 10064 states and 28685 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:30,347 INFO L93 Difference]: Finished difference Result 13835 states and 38920 transitions. [2022-03-01 15:51:30,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-01 15:51:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:30,373 INFO L225 Difference]: With dead ends: 13835 [2022-03-01 15:51:30,373 INFO L226 Difference]: Without dead ends: 13685 [2022-03-01 15:51:30,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7133 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2600, Invalid=16306, Unknown=0, NotChecked=0, Total=18906 [2022-03-01 15:51:30,376 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 626 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:30,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2027 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:51:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13685 states. [2022-03-01 15:51:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13685 to 10524. [2022-03-01 15:51:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10524 states, 10523 states have (on average 2.8526085717000855) internal successors, (30018), 10523 states have internal predecessors, (30018), 0 states have call successors, (0), 0 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 15:51:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 30018 transitions. [2022-03-01 15:51:30,618 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 30018 transitions. Word has length 75 [2022-03-01 15:51:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:30,618 INFO L470 AbstractCegarLoop]: Abstraction has 10524 states and 30018 transitions. [2022-03-01 15:51:30,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 30018 transitions. [2022-03-01 15:51:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:30,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:30,632 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, 1, 1, 1] [2022-03-01 15:51:30,651 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 15:51:30,836 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,SelfDestructingSolverStorable37 [2022-03-01 15:51:30,837 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:30,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1359630598, now seen corresponding path program 28 times [2022-03-01 15:51:30,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:30,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407183017] [2022-03-01 15:51:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:30,956 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 15:51:30,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:30,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407183017] [2022-03-01 15:51:30,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407183017] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:30,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795071264] [2022-03-01 15:51:30,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:51:30,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:30,958 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 15:51:30,960 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 15:51:31,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:51:31,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:31,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:31,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:31,170 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 15:51:31,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:31,340 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 15:51:31,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795071264] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:31,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:31,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:51:31,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804856581] [2022-03-01 15:51:31,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:31,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:51:31,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:31,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:51:31,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:51:31,341 INFO L87 Difference]: Start difference. First operand 10524 states and 30018 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 15:51:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:33,162 INFO L93 Difference]: Finished difference Result 13590 states and 38411 transitions. [2022-03-01 15:51:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-01 15:51:33,163 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 75 [2022-03-01 15:51:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:33,186 INFO L225 Difference]: With dead ends: 13590 [2022-03-01 15:51:33,187 INFO L226 Difference]: Without dead ends: 13500 [2022-03-01 15:51:33,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1039, Invalid=5767, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 15:51:33,188 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 491 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:33,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1854 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2022-03-01 15:51:33,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 10508. [2022-03-01 15:51:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10508 states, 10507 states have (on average 2.84971923479585) internal successors, (29942), 10507 states have internal predecessors, (29942), 0 states have call successors, (0), 0 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 15:51:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10508 states to 10508 states and 29942 transitions. [2022-03-01 15:51:33,365 INFO L78 Accepts]: Start accepts. Automaton has 10508 states and 29942 transitions. Word has length 75 [2022-03-01 15:51:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:33,366 INFO L470 AbstractCegarLoop]: Abstraction has 10508 states and 29942 transitions. [2022-03-01 15:51:33,366 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 15:51:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 10508 states and 29942 transitions. [2022-03-01 15:51:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:33,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:33,379 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, 1, 1, 1] [2022-03-01 15:51:33,398 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 15:51:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-01 15:51:33,596 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash -796141068, now seen corresponding path program 29 times [2022-03-01 15:51:33,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:33,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137259362] [2022-03-01 15:51:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:33,677 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 15:51:33,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:33,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137259362] [2022-03-01 15:51:33,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137259362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:33,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543870314] [2022-03-01 15:51:33,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:51:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:33,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:33,678 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 15:51:33,700 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 15:51:33,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:51:33,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:33,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 15:51:33,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:33,976 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 15:51:33,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:34,207 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 15:51:34,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543870314] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:34,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:34,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-01 15:51:34,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639089561] [2022-03-01 15:51:34,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:34,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:51:34,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:51:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:51:34,208 INFO L87 Difference]: Start difference. First operand 10508 states and 29942 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:37,144 INFO L93 Difference]: Finished difference Result 14449 states and 40857 transitions. [2022-03-01 15:51:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-01 15:51:37,145 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:37,173 INFO L225 Difference]: With dead ends: 14449 [2022-03-01 15:51:37,173 INFO L226 Difference]: Without dead ends: 14401 [2022-03-01 15:51:37,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4938 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2058, Invalid=11514, Unknown=0, NotChecked=0, Total=13572 [2022-03-01 15:51:37,175 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 885 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:37,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 2321 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:51:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2022-03-01 15:51:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 11468. [2022-03-01 15:51:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11468 states, 11467 states have (on average 2.8532310107264323) internal successors, (32718), 11467 states have internal predecessors, (32718), 0 states have call successors, (0), 0 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 15:51:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11468 states to 11468 states and 32718 transitions. [2022-03-01 15:51:37,465 INFO L78 Accepts]: Start accepts. Automaton has 11468 states and 32718 transitions. Word has length 75 [2022-03-01 15:51:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:37,465 INFO L470 AbstractCegarLoop]: Abstraction has 11468 states and 32718 transitions. [2022-03-01 15:51:37,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 11468 states and 32718 transitions. [2022-03-01 15:51:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:37,480 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:37,480 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, 1, 1, 1] [2022-03-01 15:51:37,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:37,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-01 15:51:37,687 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:37,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1419924444, now seen corresponding path program 30 times [2022-03-01 15:51:37,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:37,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185776488] [2022-03-01 15:51:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:37,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:37,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185776488] [2022-03-01 15:51:37,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185776488] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:37,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672052840] [2022-03-01 15:51:37,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:51:37,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:37,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:37,796 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 15:51:37,797 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 15:51:37,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:51:37,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:37,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:37,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:38,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:38,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672052840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:38,252 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:38,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:38,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989596110] [2022-03-01 15:51:38,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:38,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:38,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:38,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:38,255 INFO L87 Difference]: Start difference. First operand 11468 states and 32718 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:41,513 INFO L93 Difference]: Finished difference Result 16177 states and 45532 transitions. [2022-03-01 15:51:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-03-01 15:51:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:41,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:41,547 INFO L225 Difference]: With dead ends: 16177 [2022-03-01 15:51:41,547 INFO L226 Difference]: Without dead ends: 16117 [2022-03-01 15:51:41,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7362 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2857, Invalid=15503, Unknown=0, NotChecked=0, Total=18360 [2022-03-01 15:51:41,550 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 795 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:41,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1975 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16117 states. [2022-03-01 15:51:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16117 to 12112. [2022-03-01 15:51:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12112 states, 12111 states have (on average 2.860622574519032) internal successors, (34645), 12111 states have internal predecessors, (34645), 0 states have call successors, (0), 0 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 15:51:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12112 states to 12112 states and 34645 transitions. [2022-03-01 15:51:41,833 INFO L78 Accepts]: Start accepts. Automaton has 12112 states and 34645 transitions. Word has length 75 [2022-03-01 15:51:41,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:41,834 INFO L470 AbstractCegarLoop]: Abstraction has 12112 states and 34645 transitions. [2022-03-01 15:51:41,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:41,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12112 states and 34645 transitions. [2022-03-01 15:51:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:41,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:41,850 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, 1, 1, 1] [2022-03-01 15:51:41,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-01 15:51:42,055 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,SelfDestructingSolverStorable40 [2022-03-01 15:51:42,055 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:42,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1818153402, now seen corresponding path program 31 times [2022-03-01 15:51:42,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:42,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644520360] [2022-03-01 15:51:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:42,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:42,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644520360] [2022-03-01 15:51:42,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644520360] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:42,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071659338] [2022-03-01 15:51:42,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:51:42,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:42,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:42,148 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 15:51:42,170 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 15:51:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:42,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:42,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:42,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:42,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071659338] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:42,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:42,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:51:42,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823054758] [2022-03-01 15:51:42,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:42,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:51:42,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:51:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:51:42,566 INFO L87 Difference]: Start difference. First operand 12112 states and 34645 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:44,313 INFO L93 Difference]: Finished difference Result 14497 states and 41139 transitions. [2022-03-01 15:51:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 15:51:44,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:44,356 INFO L225 Difference]: With dead ends: 14497 [2022-03-01 15:51:44,356 INFO L226 Difference]: Without dead ends: 14407 [2022-03-01 15:51:44,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3015 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1418, Invalid=7324, Unknown=0, NotChecked=0, Total=8742 [2022-03-01 15:51:44,358 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 475 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:44,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1908 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:51:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2022-03-01 15:51:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 12140. [2022-03-01 15:51:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12140 states, 12139 states have (on average 2.857401762912925) internal successors, (34686), 12139 states have internal predecessors, (34686), 0 states have call successors, (0), 0 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 15:51:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 34686 transitions. [2022-03-01 15:51:44,669 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 34686 transitions. Word has length 75 [2022-03-01 15:51:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:44,670 INFO L470 AbstractCegarLoop]: Abstraction has 12140 states and 34686 transitions. [2022-03-01 15:51:44,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 15:51:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 34686 transitions. [2022-03-01 15:51:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:44,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:44,688 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, 1, 1, 1] [2022-03-01 15:51:44,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:44,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:44,899 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059606, now seen corresponding path program 32 times [2022-03-01 15:51:44,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:44,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379945441] [2022-03-01 15:51:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:44,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:45,000 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 15:51:45,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:45,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379945441] [2022-03-01 15:51:45,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379945441] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:45,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589374095] [2022-03-01 15:51:45,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:51:45,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:45,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:45,002 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:45,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 15:51:45,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:51:45,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:45,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:45,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:45,219 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 15:51:45,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:45,399 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 15:51:45,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589374095] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:45,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:45,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:51:45,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030768869] [2022-03-01 15:51:45,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:45,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:51:45,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:45,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:51:45,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:51:45,400 INFO L87 Difference]: Start difference. First operand 12140 states and 34686 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 15:51:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:46,643 INFO L93 Difference]: Finished difference Result 14819 states and 41810 transitions. [2022-03-01 15:51:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:51:46,644 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 75 [2022-03-01 15:51:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:46,673 INFO L225 Difference]: With dead ends: 14819 [2022-03-01 15:51:46,674 INFO L226 Difference]: Without dead ends: 14771 [2022-03-01 15:51:46,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=792, Invalid=3498, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 15:51:46,675 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 621 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:46,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1288 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:51:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14771 states. [2022-03-01 15:51:46,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 12640. [2022-03-01 15:51:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12640 states, 12639 states have (on average 2.8597990347337605) internal successors, (36145), 12639 states have internal predecessors, (36145), 0 states have call successors, (0), 0 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 15:51:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 36145 transitions. [2022-03-01 15:51:46,918 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 36145 transitions. Word has length 75 [2022-03-01 15:51:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:46,919 INFO L470 AbstractCegarLoop]: Abstraction has 12640 states and 36145 transitions. [2022-03-01 15:51:46,919 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 15:51:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 36145 transitions. [2022-03-01 15:51:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:46,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:46,938 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, 1, 1, 1] [2022-03-01 15:51:46,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:47,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:47,155 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:47,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1734776992, now seen corresponding path program 33 times [2022-03-01 15:51:47,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:47,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399046971] [2022-03-01 15:51:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:47,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:47,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:47,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399046971] [2022-03-01 15:51:47,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399046971] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:47,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120682799] [2022-03-01 15:51:47,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:51:47,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:47,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:47,276 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:47,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 15:51:47,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:51:47,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:47,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:47,522 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 15:51:47,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:47,700 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 15:51:47,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120682799] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:47,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:47,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:47,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519554502] [2022-03-01 15:51:47,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:47,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:47,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:47,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:47,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:47,702 INFO L87 Difference]: Start difference. First operand 12640 states and 36145 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:51:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:49,729 INFO L93 Difference]: Finished difference Result 15902 states and 44805 transitions. [2022-03-01 15:51:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-01 15:51:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 75 [2022-03-01 15:51:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:49,758 INFO L225 Difference]: With dead ends: 15902 [2022-03-01 15:51:49,758 INFO L226 Difference]: Without dead ends: 15842 [2022-03-01 15:51:49,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2971 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1467, Invalid=6905, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 15:51:49,759 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 826 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:49,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1766 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15842 states. [2022-03-01 15:51:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15842 to 12380. [2022-03-01 15:51:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.855319492689232) internal successors, (35346), 12379 states have internal predecessors, (35346), 0 states have call successors, (0), 0 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 15:51:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35346 transitions. [2022-03-01 15:51:49,990 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35346 transitions. Word has length 75 [2022-03-01 15:51:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:49,990 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35346 transitions. [2022-03-01 15:51:49,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 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 15:51:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35346 transitions. [2022-03-01 15:51:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:50,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:50,008 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, 1, 1, 1] [2022-03-01 15:51:50,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:50,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-01 15:51:50,213 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1416364886, now seen corresponding path program 34 times [2022-03-01 15:51:50,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:50,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612430209] [2022-03-01 15:51:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:50,293 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 15:51:50,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:50,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612430209] [2022-03-01 15:51:50,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612430209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:50,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350553066] [2022-03-01 15:51:50,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:51:50,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:50,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:50,294 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:50,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-01 15:51:50,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:51:50,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:50,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:50,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:50,542 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 15:51:50,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:50,739 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 15:51:50,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350553066] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:50,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:50,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:51:50,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937717707] [2022-03-01 15:51:50,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:50,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:51:50,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:51:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:51:50,740 INFO L87 Difference]: Start difference. First operand 12380 states and 35346 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 15:51:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:51,382 INFO L93 Difference]: Finished difference Result 12832 states and 36524 transitions. [2022-03-01 15:51:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 15:51:51,383 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 75 [2022-03-01 15:51:51,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:51,409 INFO L225 Difference]: With dead ends: 12832 [2022-03-01 15:51:51,409 INFO L226 Difference]: Without dead ends: 12796 [2022-03-01 15:51:51,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1360, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:51:51,409 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 288 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:51,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1230 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:51:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12796 states. [2022-03-01 15:51:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12796 to 12380. [2022-03-01 15:51:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.8549963648113743) internal successors, (35342), 12379 states have internal predecessors, (35342), 0 states have call successors, (0), 0 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 15:51:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35342 transitions. [2022-03-01 15:51:51,695 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35342 transitions. Word has length 75 [2022-03-01 15:51:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:51,695 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35342 transitions. [2022-03-01 15:51:51,695 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 15:51:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35342 transitions. [2022-03-01 15:51:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:51,714 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:51,714 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, 1, 1, 1] [2022-03-01 15:51:51,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:51,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:51,928 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1192039042, now seen corresponding path program 35 times [2022-03-01 15:51:51,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:51,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288438525] [2022-03-01 15:51:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:52,019 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 15:51:52,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:52,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288438525] [2022-03-01 15:51:52,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288438525] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:52,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616921055] [2022-03-01 15:51:52,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:51:52,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:52,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:52,021 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:52,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-01 15:51:52,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:51:52,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:52,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:52,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:52,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:52,378 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 15:51:52,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616921055] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:52,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:52,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:51:52,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172727627] [2022-03-01 15:51:52,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:52,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:51:52,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:51:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:51:52,392 INFO L87 Difference]: Start difference. First operand 12380 states and 35342 transitions. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 15:51:54,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:54,613 INFO L93 Difference]: Finished difference Result 21100 states and 59755 transitions. [2022-03-01 15:51:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-01 15:51:54,614 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:54,655 INFO L225 Difference]: With dead ends: 21100 [2022-03-01 15:51:54,655 INFO L226 Difference]: Without dead ends: 21052 [2022-03-01 15:51:54,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3625 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1406, Invalid=8100, Unknown=0, NotChecked=0, Total=9506 [2022-03-01 15:51:54,656 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 636 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:54,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1750 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:51:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21052 states. [2022-03-01 15:51:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21052 to 13940. [2022-03-01 15:51:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13940 states, 13939 states have (on average 2.869072386828323) internal successors, (39992), 13939 states have internal predecessors, (39992), 0 states have call successors, (0), 0 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 15:51:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13940 states to 13940 states and 39992 transitions. [2022-03-01 15:51:54,997 INFO L78 Accepts]: Start accepts. Automaton has 13940 states and 39992 transitions. Word has length 75 [2022-03-01 15:51:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:54,998 INFO L470 AbstractCegarLoop]: Abstraction has 13940 states and 39992 transitions. [2022-03-01 15:51:54,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 15:51:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 13940 states and 39992 transitions. [2022-03-01 15:51:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:55,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:55,087 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, 1, 1, 1] [2022-03-01 15:51:55,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:55,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-01 15:51:55,291 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:55,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:55,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1171321656, now seen corresponding path program 36 times [2022-03-01 15:51:55,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:55,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619739702] [2022-03-01 15:51:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:55,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:55,398 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 15:51:55,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:55,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619739702] [2022-03-01 15:51:55,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619739702] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:55,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509326822] [2022-03-01 15:51:55,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:51:55,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:55,399 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:55,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-01 15:51:55,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:51:55,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:55,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:51:55,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:55,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:55,787 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 15:51:55,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509326822] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:55,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:55,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-01 15:51:55,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825397566] [2022-03-01 15:51:55,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:55,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:51:55,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:51:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:51:55,788 INFO L87 Difference]: Start difference. First operand 13940 states and 39992 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:51:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:59,472 INFO L93 Difference]: Finished difference Result 23366 states and 66194 transitions. [2022-03-01 15:51:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-01 15:51:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:51:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:59,516 INFO L225 Difference]: With dead ends: 23366 [2022-03-01 15:51:59,517 INFO L226 Difference]: Without dead ends: 23306 [2022-03-01 15:51:59,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2009, Invalid=8911, Unknown=0, NotChecked=0, Total=10920 [2022-03-01 15:51:59,518 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 827 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:59,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1936 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 15:51:59,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23306 states. [2022-03-01 15:51:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23306 to 14704. [2022-03-01 15:51:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14704 states, 14703 states have (on average 2.873767258382643) internal successors, (42253), 14703 states have internal predecessors, (42253), 0 states have call successors, (0), 0 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 15:51:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 42253 transitions. [2022-03-01 15:51:59,975 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 42253 transitions. Word has length 75 [2022-03-01 15:51:59,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:59,976 INFO L470 AbstractCegarLoop]: Abstraction has 14704 states and 42253 transitions. [2022-03-01 15:51:59,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:51:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 42253 transitions. [2022-03-01 15:51:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:51:59,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:59,999 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, 1, 1, 1] [2022-03-01 15:52:00,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:00,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:00,215 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1569550614, now seen corresponding path program 37 times [2022-03-01 15:52:00,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:00,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960097345] [2022-03-01 15:52:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:00,306 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 15:52:00,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:00,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960097345] [2022-03-01 15:52:00,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960097345] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:00,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731401698] [2022-03-01 15:52:00,306 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:52:00,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:00,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:00,307 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:00,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-01 15:52:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:00,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:00,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:00,496 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 15:52:00,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:00,683 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 15:52:00,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731401698] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:00,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:00,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:52:00,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585764936] [2022-03-01 15:52:00,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:00,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:52:00,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:52:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:52:00,684 INFO L87 Difference]: Start difference. First operand 14704 states and 42253 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:52:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:04,074 INFO L93 Difference]: Finished difference Result 23910 states and 68020 transitions. [2022-03-01 15:52:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-01 15:52:04,074 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:04,123 INFO L225 Difference]: With dead ends: 23910 [2022-03-01 15:52:04,123 INFO L226 Difference]: Without dead ends: 23745 [2022-03-01 15:52:04,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4628 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1812, Invalid=10398, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 15:52:04,125 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 602 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:04,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2130 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:52:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23745 states. [2022-03-01 15:52:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23745 to 15332. [2022-03-01 15:52:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15332 states, 15331 states have (on average 2.87495923292675) internal successors, (44076), 15331 states have internal predecessors, (44076), 0 states have call successors, (0), 0 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 15:52:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15332 states to 15332 states and 44076 transitions. [2022-03-01 15:52:04,506 INFO L78 Accepts]: Start accepts. Automaton has 15332 states and 44076 transitions. Word has length 75 [2022-03-01 15:52:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:04,506 INFO L470 AbstractCegarLoop]: Abstraction has 15332 states and 44076 transitions. [2022-03-01 15:52:04,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:52:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 15332 states and 44076 transitions. [2022-03-01 15:52:04,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:04,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:04,528 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, 1, 1, 1] [2022-03-01 15:52:04,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:04,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-01 15:52:04,744 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1019987642, now seen corresponding path program 38 times [2022-03-01 15:52:04,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:04,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846704548] [2022-03-01 15:52:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:04,862 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 15:52:04,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:04,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846704548] [2022-03-01 15:52:04,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846704548] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:04,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209728569] [2022-03-01 15:52:04,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:52:04,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:04,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:04,892 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:04,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-01 15:52:04,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:52:04,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:04,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:04,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:05,107 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 15:52:05,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:05,327 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 15:52:05,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209728569] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:05,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:05,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:52:05,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147202448] [2022-03-01 15:52:05,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:05,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:52:05,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:52:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:52:05,328 INFO L87 Difference]: Start difference. First operand 15332 states and 44076 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:52:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:06,852 INFO L93 Difference]: Finished difference Result 22691 states and 64784 transitions. [2022-03-01 15:52:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:52:06,853 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:06,893 INFO L225 Difference]: With dead ends: 22691 [2022-03-01 15:52:06,893 INFO L226 Difference]: Without dead ends: 22511 [2022-03-01 15:52:06,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=751, Invalid=3281, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 15:52:06,894 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 612 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:06,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1426 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:52:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22511 states. [2022-03-01 15:52:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22511 to 15528. [2022-03-01 15:52:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15528 states, 15527 states have (on average 2.872093772138855) internal successors, (44595), 15527 states have internal predecessors, (44595), 0 states have call successors, (0), 0 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 15:52:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15528 states to 15528 states and 44595 transitions. [2022-03-01 15:52:07,233 INFO L78 Accepts]: Start accepts. Automaton has 15528 states and 44595 transitions. Word has length 75 [2022-03-01 15:52:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:07,233 INFO L470 AbstractCegarLoop]: Abstraction has 15528 states and 44595 transitions. [2022-03-01 15:52:07,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:52:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 15528 states and 44595 transitions. [2022-03-01 15:52:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:07,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:07,257 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, 1, 1, 1] [2022-03-01 15:52:07,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-01 15:52:07,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-01 15:52:07,460 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:07,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1062708802, now seen corresponding path program 39 times [2022-03-01 15:52:07,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:07,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948952667] [2022-03-01 15:52:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:07,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:07,543 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 15:52:07,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:07,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948952667] [2022-03-01 15:52:07,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948952667] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:07,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024995786] [2022-03-01 15:52:07,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:52:07,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:07,545 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:07,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-01 15:52:07,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:52:07,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:07,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:07,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:07,762 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 15:52:07,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:07,893 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 15:52:07,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024995786] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:07,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:07,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:52:07,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187588121] [2022-03-01 15:52:07,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:07,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:52:07,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:52:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:52:07,894 INFO L87 Difference]: Start difference. First operand 15528 states and 44595 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:09,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:09,627 INFO L93 Difference]: Finished difference Result 20081 states and 57112 transitions. [2022-03-01 15:52:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-01 15:52:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:09,666 INFO L225 Difference]: With dead ends: 20081 [2022-03-01 15:52:09,666 INFO L226 Difference]: Without dead ends: 20033 [2022-03-01 15:52:09,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1165, Invalid=6667, Unknown=0, NotChecked=0, Total=7832 [2022-03-01 15:52:09,667 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 534 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:09,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1527 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20033 states. [2022-03-01 15:52:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20033 to 16404. [2022-03-01 15:52:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16404 states, 16403 states have (on average 2.8733768213131743) internal successors, (47132), 16403 states have internal predecessors, (47132), 0 states have call successors, (0), 0 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 15:52:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16404 states to 16404 states and 47132 transitions. [2022-03-01 15:52:10,041 INFO L78 Accepts]: Start accepts. Automaton has 16404 states and 47132 transitions. Word has length 75 [2022-03-01 15:52:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:10,041 INFO L470 AbstractCegarLoop]: Abstraction has 16404 states and 47132 transitions. [2022-03-01 15:52:10,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 16404 states and 47132 transitions. [2022-03-01 15:52:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:10,156 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:10,156 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, 1, 1, 1] [2022-03-01 15:52:10,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:10,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-01 15:52:10,360 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1041991416, now seen corresponding path program 40 times [2022-03-01 15:52:10,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:10,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845895577] [2022-03-01 15:52:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:10,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:10,436 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 15:52:10,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:10,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845895577] [2022-03-01 15:52:10,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845895577] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:10,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181225012] [2022-03-01 15:52:10,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:52:10,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:10,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:10,438 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:10,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-01 15:52:10,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:52:10,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:10,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:10,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:10,636 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 15:52:10,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:10,772 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 15:52:10,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181225012] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:10,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:10,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:52:10,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643914558] [2022-03-01 15:52:10,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:10,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:52:10,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:10,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:52:10,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:52:10,773 INFO L87 Difference]: Start difference. First operand 16404 states and 47132 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:13,728 INFO L93 Difference]: Finished difference Result 22690 states and 64575 transitions. [2022-03-01 15:52:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-01 15:52:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:13,772 INFO L225 Difference]: With dead ends: 22690 [2022-03-01 15:52:13,772 INFO L226 Difference]: Without dead ends: 22630 [2022-03-01 15:52:13,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4575 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2158, Invalid=10052, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 15:52:13,774 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 790 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:13,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 1957 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:52:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22630 states. [2022-03-01 15:52:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22630 to 17120. [2022-03-01 15:52:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17120 states, 17119 states have (on average 2.8759273322039838) internal successors, (49233), 17119 states have internal predecessors, (49233), 0 states have call successors, (0), 0 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 15:52:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17120 states to 17120 states and 49233 transitions. [2022-03-01 15:52:14,165 INFO L78 Accepts]: Start accepts. Automaton has 17120 states and 49233 transitions. Word has length 75 [2022-03-01 15:52:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:14,165 INFO L470 AbstractCegarLoop]: Abstraction has 17120 states and 49233 transitions. [2022-03-01 15:52:14,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand 17120 states and 49233 transitions. [2022-03-01 15:52:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:14,190 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:14,190 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, 1, 1, 1] [2022-03-01 15:52:14,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:14,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-03-01 15:52:14,395 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1440220374, now seen corresponding path program 41 times [2022-03-01 15:52:14,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:14,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95179678] [2022-03-01 15:52:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:14,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:14,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:14,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95179678] [2022-03-01 15:52:14,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95179678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:14,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485054296] [2022-03-01 15:52:14,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:52:14,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:14,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:14,478 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:14,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-01 15:52:14,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:52:14,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:14,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:14,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:14,714 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 15:52:14,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:14,875 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 15:52:14,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485054296] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:14,876 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:14,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:52:14,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766715788] [2022-03-01 15:52:14,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:14,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:52:14,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:52:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:52:14,876 INFO L87 Difference]: Start difference. First operand 17120 states and 49233 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:16,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:16,923 INFO L93 Difference]: Finished difference Result 22004 states and 62810 transitions. [2022-03-01 15:52:16,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 15:52:16,923 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:16,967 INFO L225 Difference]: With dead ends: 22004 [2022-03-01 15:52:16,967 INFO L226 Difference]: Without dead ends: 21899 [2022-03-01 15:52:16,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1247, Invalid=6409, Unknown=0, NotChecked=0, Total=7656 [2022-03-01 15:52:16,969 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 548 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:16,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 1591 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:52:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21899 states. [2022-03-01 15:52:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21899 to 17596. [2022-03-01 15:52:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17596 states, 17595 states have (on average 2.8738846263142936) internal successors, (50566), 17595 states have internal predecessors, (50566), 0 states have call successors, (0), 0 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 15:52:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17596 states to 17596 states and 50566 transitions. [2022-03-01 15:52:17,313 INFO L78 Accepts]: Start accepts. Automaton has 17596 states and 50566 transitions. Word has length 75 [2022-03-01 15:52:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:17,313 INFO L470 AbstractCegarLoop]: Abstraction has 17596 states and 50566 transitions. [2022-03-01 15:52:17,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 17596 states and 50566 transitions. [2022-03-01 15:52:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:17,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:17,338 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, 1, 1, 1] [2022-03-01 15:52:17,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:17,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:17,543 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:17,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1447491872, now seen corresponding path program 42 times [2022-03-01 15:52:17,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:17,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846825216] [2022-03-01 15:52:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:17,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:17,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846825216] [2022-03-01 15:52:17,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846825216] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:17,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651415406] [2022-03-01 15:52:17,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:52:17,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:17,643 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:17,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-01 15:52:17,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:52:17,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:17,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:17,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:17,826 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 15:52:17,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:18,001 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 15:52:18,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651415406] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:18,001 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:18,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:52:18,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273415444] [2022-03-01 15:52:18,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:18,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:52:18,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:52:18,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:52:18,002 INFO L87 Difference]: Start difference. First operand 17596 states and 50566 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:19,231 INFO L93 Difference]: Finished difference Result 20505 states and 58358 transitions. [2022-03-01 15:52:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:52:19,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:19,271 INFO L225 Difference]: With dead ends: 20505 [2022-03-01 15:52:19,271 INFO L226 Difference]: Without dead ends: 20457 [2022-03-01 15:52:19,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=734, Invalid=3298, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 15:52:19,273 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 437 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:19,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1423 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20457 states. [2022-03-01 15:52:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20457 to 18060. [2022-03-01 15:52:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18059 states have (on average 2.874024032338446) internal successors, (51902), 18059 states have internal predecessors, (51902), 0 states have call successors, (0), 0 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 15:52:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 51902 transitions. [2022-03-01 15:52:19,736 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 51902 transitions. Word has length 75 [2022-03-01 15:52:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:19,736 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 51902 transitions. [2022-03-01 15:52:19,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 51902 transitions. [2022-03-01 15:52:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:19,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:19,762 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, 1, 1, 1] [2022-03-01 15:52:19,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:19,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:19,975 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1468209258, now seen corresponding path program 43 times [2022-03-01 15:52:19,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:19,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836288756] [2022-03-01 15:52:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:19,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:20,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:20,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836288756] [2022-03-01 15:52:20,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836288756] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:20,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136271195] [2022-03-01 15:52:20,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:52:20,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:20,064 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:20,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-01 15:52:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:20,283 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 15:52:20,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:20,471 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 15:52:20,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136271195] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:20,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:20,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:52:20,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562229400] [2022-03-01 15:52:20,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:20,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:52:20,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:52:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:52:20,473 INFO L87 Difference]: Start difference. First operand 18060 states and 51902 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:21,714 INFO L93 Difference]: Finished difference Result 21387 states and 60825 transitions. [2022-03-01 15:52:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:52:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:21,754 INFO L225 Difference]: With dead ends: 21387 [2022-03-01 15:52:21,754 INFO L226 Difference]: Without dead ends: 21327 [2022-03-01 15:52:21,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=645, Invalid=2325, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 15:52:21,755 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 436 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:21,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1489 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21327 states. [2022-03-01 15:52:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21327 to 18008. [2022-03-01 15:52:22,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18008 states, 18007 states have (on average 2.8728272338535015) internal successors, (51731), 18007 states have internal predecessors, (51731), 0 states have call successors, (0), 0 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 15:52:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18008 states to 18008 states and 51731 transitions. [2022-03-01 15:52:22,199 INFO L78 Accepts]: Start accepts. Automaton has 18008 states and 51731 transitions. Word has length 75 [2022-03-01 15:52:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:22,199 INFO L470 AbstractCegarLoop]: Abstraction has 18008 states and 51731 transitions. [2022-03-01 15:52:22,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18008 states and 51731 transitions. [2022-03-01 15:52:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:22,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:22,222 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, 1, 1, 1] [2022-03-01 15:52:22,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:22,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-03-01 15:52:22,423 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1149797152, now seen corresponding path program 44 times [2022-03-01 15:52:22,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:22,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594310021] [2022-03-01 15:52:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:22,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:22,505 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 15:52:22,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:22,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594310021] [2022-03-01 15:52:22,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594310021] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:22,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069620231] [2022-03-01 15:52:22,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:52:22,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:22,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:22,506 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:22,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-01 15:52:22,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:52:22,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:22,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:22,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:22,695 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 15:52:22,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:22,864 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 15:52:22,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069620231] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:22,864 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:22,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:52:22,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739338325] [2022-03-01 15:52:22,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:22,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:52:22,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:52:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:52:22,865 INFO L87 Difference]: Start difference. First operand 18008 states and 51731 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:23,614 INFO L93 Difference]: Finished difference Result 18902 states and 54100 transitions. [2022-03-01 15:52:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 15:52:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:23,648 INFO L225 Difference]: With dead ends: 18902 [2022-03-01 15:52:23,648 INFO L226 Difference]: Without dead ends: 18830 [2022-03-01 15:52:23,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:52:23,649 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 240 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:23,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1431 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:52:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18830 states. [2022-03-01 15:52:23,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18830 to 18028. [2022-03-01 15:52:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 2.872469074166528) internal successors, (51782), 18027 states have internal predecessors, (51782), 0 states have call successors, (0), 0 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 15:52:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 51782 transitions. [2022-03-01 15:52:24,034 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 51782 transitions. Word has length 75 [2022-03-01 15:52:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:24,034 INFO L470 AbstractCegarLoop]: Abstraction has 18028 states and 51782 transitions. [2022-03-01 15:52:24,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 51782 transitions. [2022-03-01 15:52:24,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:24,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:24,061 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, 1, 1, 1] [2022-03-01 15:52:24,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-01 15:52:24,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:24,268 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:24,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1333578238, now seen corresponding path program 45 times [2022-03-01 15:52:24,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:24,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45504573] [2022-03-01 15:52:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:24,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:24,369 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 15:52:24,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:24,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45504573] [2022-03-01 15:52:24,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45504573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:24,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124890657] [2022-03-01 15:52:24,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:52:24,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:24,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:24,378 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:24,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-01 15:52:24,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:52:24,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:24,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:24,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:24,568 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 15:52:24,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:24,804 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 15:52:24,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124890657] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:24,805 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:24,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:52:24,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474890990] [2022-03-01 15:52:24,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:24,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:52:24,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:24,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:52:24,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:52:24,806 INFO L87 Difference]: Start difference. First operand 18028 states and 51782 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:26,426 INFO L93 Difference]: Finished difference Result 22013 states and 62717 transitions. [2022-03-01 15:52:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 15:52:26,427 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:26,469 INFO L225 Difference]: With dead ends: 22013 [2022-03-01 15:52:26,469 INFO L226 Difference]: Without dead ends: 21965 [2022-03-01 15:52:26,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=4911, Unknown=0, NotChecked=0, Total=5852 [2022-03-01 15:52:26,471 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 486 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:26,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1242 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21965 states. [2022-03-01 15:52:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21965 to 18656. [2022-03-01 15:52:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18656 states, 18655 states have (on average 2.874135620477084) internal successors, (53617), 18655 states have internal predecessors, (53617), 0 states have call successors, (0), 0 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 15:52:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18656 states to 18656 states and 53617 transitions. [2022-03-01 15:52:26,937 INFO L78 Accepts]: Start accepts. Automaton has 18656 states and 53617 transitions. Word has length 75 [2022-03-01 15:52:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:26,937 INFO L470 AbstractCegarLoop]: Abstraction has 18656 states and 53617 transitions. [2022-03-01 15:52:26,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18656 states and 53617 transitions. [2022-03-01 15:52:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:26,964 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:26,964 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, 1, 1, 1] [2022-03-01 15:52:26,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-01 15:52:27,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-01 15:52:27,174 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:27,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1312860852, now seen corresponding path program 46 times [2022-03-01 15:52:27,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:27,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241362846] [2022-03-01 15:52:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:27,270 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 15:52:27,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:27,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241362846] [2022-03-01 15:52:27,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241362846] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:27,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681475633] [2022-03-01 15:52:27,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:52:27,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:27,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:27,272 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:27,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-01 15:52:27,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:52:27,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:27,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:27,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:27,505 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 15:52:27,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:27,629 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 15:52:27,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681475633] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:27,630 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:27,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:52:27,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093907675] [2022-03-01 15:52:27,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:27,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:52:27,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:52:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:52:27,631 INFO L87 Difference]: Start difference. First operand 18656 states and 53617 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:30,411 INFO L93 Difference]: Finished difference Result 23691 states and 67298 transitions. [2022-03-01 15:52:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-01 15:52:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:30,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:30,452 INFO L225 Difference]: With dead ends: 23691 [2022-03-01 15:52:30,452 INFO L226 Difference]: Without dead ends: 23631 [2022-03-01 15:52:30,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1898, Invalid=9444, Unknown=0, NotChecked=0, Total=11342 [2022-03-01 15:52:30,453 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 674 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:30,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 2050 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23631 states. [2022-03-01 15:52:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23631 to 18820. [2022-03-01 15:52:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18820 states, 18819 states have (on average 2.874966788883575) internal successors, (54104), 18819 states have internal predecessors, (54104), 0 states have call successors, (0), 0 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 15:52:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 54104 transitions. [2022-03-01 15:52:30,893 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 54104 transitions. Word has length 75 [2022-03-01 15:52:30,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:30,894 INFO L470 AbstractCegarLoop]: Abstraction has 18820 states and 54104 transitions. [2022-03-01 15:52:30,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 54104 transitions. [2022-03-01 15:52:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:30,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:30,923 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, 1, 1, 1] [2022-03-01 15:52:30,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-01 15:52:31,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:31,140 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1711089810, now seen corresponding path program 47 times [2022-03-01 15:52:31,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:31,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619227422] [2022-03-01 15:52:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:31,233 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 15:52:31,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:31,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619227422] [2022-03-01 15:52:31,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619227422] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:31,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539190324] [2022-03-01 15:52:31,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:52:31,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:31,235 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:31,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-01 15:52:31,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:52:31,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:31,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:31,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:31,530 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 15:52:31,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:31,701 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 15:52:31,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539190324] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:31,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:31,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:52:31,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045860797] [2022-03-01 15:52:31,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:31,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:52:31,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:31,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:52:31,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:52:31,702 INFO L87 Difference]: Start difference. First operand 18820 states and 54104 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:33,579 INFO L93 Difference]: Finished difference Result 22773 states and 65043 transitions. [2022-03-01 15:52:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-01 15:52:33,580 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:33,624 INFO L225 Difference]: With dead ends: 22773 [2022-03-01 15:52:33,624 INFO L226 Difference]: Without dead ends: 22668 [2022-03-01 15:52:33,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 15:52:33,626 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 449 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:33,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1645 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:52:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22668 states. [2022-03-01 15:52:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22668 to 19184. [2022-03-01 15:52:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19184 states, 19183 states have (on average 2.8723870093311787) internal successors, (55101), 19183 states have internal predecessors, (55101), 0 states have call successors, (0), 0 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 15:52:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19184 states to 19184 states and 55101 transitions. [2022-03-01 15:52:34,102 INFO L78 Accepts]: Start accepts. Automaton has 19184 states and 55101 transitions. Word has length 75 [2022-03-01 15:52:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:34,103 INFO L470 AbstractCegarLoop]: Abstraction has 19184 states and 55101 transitions. [2022-03-01 15:52:34,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 19184 states and 55101 transitions. [2022-03-01 15:52:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:34,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:34,131 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, 1, 1, 1] [2022-03-01 15:52:34,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-01 15:52:34,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:34,343 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:34,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1176622436, now seen corresponding path program 48 times [2022-03-01 15:52:34,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:34,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036519738] [2022-03-01 15:52:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:34,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:34,435 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 15:52:34,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:34,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036519738] [2022-03-01 15:52:34,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036519738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:34,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791409088] [2022-03-01 15:52:34,436 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:52:34,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:34,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:34,437 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:34,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-01 15:52:34,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:52:34,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:34,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:34,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:34,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:34,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791409088] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:34,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:34,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:52:34,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980997807] [2022-03-01 15:52:34,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:34,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:52:34,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:52:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:52:34,868 INFO L87 Difference]: Start difference. First operand 19184 states and 55101 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:35,968 INFO L93 Difference]: Finished difference Result 22162 states and 63098 transitions. [2022-03-01 15:52:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 15:52:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:36,017 INFO L225 Difference]: With dead ends: 22162 [2022-03-01 15:52:36,018 INFO L226 Difference]: Without dead ends: 22114 [2022-03-01 15:52:36,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=605, Invalid=2935, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 15:52:36,018 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 457 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:36,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1475 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22114 states. [2022-03-01 15:52:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22114 to 19912. [2022-03-01 15:52:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19912 states, 19911 states have (on average 2.8705238310481644) internal successors, (57155), 19911 states have internal predecessors, (57155), 0 states have call successors, (0), 0 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 15:52:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19912 states to 19912 states and 57155 transitions. [2022-03-01 15:52:36,535 INFO L78 Accepts]: Start accepts. Automaton has 19912 states and 57155 transitions. Word has length 75 [2022-03-01 15:52:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:36,535 INFO L470 AbstractCegarLoop]: Abstraction has 19912 states and 57155 transitions. [2022-03-01 15:52:36,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 19912 states and 57155 transitions. [2022-03-01 15:52:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:36,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:36,567 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, 1, 1, 1] [2022-03-01 15:52:36,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-01 15:52:36,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-01 15:52:36,784 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1197339822, now seen corresponding path program 49 times [2022-03-01 15:52:36,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:36,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177732875] [2022-03-01 15:52:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:36,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:36,923 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 15:52:36,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:36,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177732875] [2022-03-01 15:52:36,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177732875] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:36,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221549323] [2022-03-01 15:52:36,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:52:36,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:36,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:36,924 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:36,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-01 15:52:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:37,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:37,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:37,145 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 15:52:37,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:37,320 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 15:52:37,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221549323] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:37,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:37,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:52:37,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504652205] [2022-03-01 15:52:37,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:37,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:52:37,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:52:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:52:37,321 INFO L87 Difference]: Start difference. First operand 19912 states and 57155 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:38,869 INFO L93 Difference]: Finished difference Result 24111 states and 68592 transitions. [2022-03-01 15:52:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 15:52:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:38,918 INFO L225 Difference]: With dead ends: 24111 [2022-03-01 15:52:38,918 INFO L226 Difference]: Without dead ends: 24051 [2022-03-01 15:52:38,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=805, Invalid=3485, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 15:52:38,919 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 446 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:38,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1896 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24051 states. [2022-03-01 15:52:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24051 to 20240. [2022-03-01 15:52:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20240 states, 20239 states have (on average 2.870151687336331) internal successors, (58089), 20239 states have internal predecessors, (58089), 0 states have call successors, (0), 0 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 15:52:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20240 states to 20240 states and 58089 transitions. [2022-03-01 15:52:39,566 INFO L78 Accepts]: Start accepts. Automaton has 20240 states and 58089 transitions. Word has length 75 [2022-03-01 15:52:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:39,566 INFO L470 AbstractCegarLoop]: Abstraction has 20240 states and 58089 transitions. [2022-03-01 15:52:39,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 20240 states and 58089 transitions. [2022-03-01 15:52:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:39,599 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:39,599 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, 1, 1, 1] [2022-03-01 15:52:39,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-03-01 15:52:39,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-01 15:52:39,817 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash 878927716, now seen corresponding path program 50 times [2022-03-01 15:52:39,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:39,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380016485] [2022-03-01 15:52:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:39,926 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 15:52:39,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:39,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380016485] [2022-03-01 15:52:39,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380016485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:39,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161334111] [2022-03-01 15:52:39,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:52:39,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:39,928 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:39,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-01 15:52:40,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:52:40,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:40,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:40,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:40,186 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 15:52:40,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:40,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161334111] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:40,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:40,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:52:40,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314184980] [2022-03-01 15:52:40,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:40,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:52:40,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:52:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:52:40,312 INFO L87 Difference]: Start difference. First operand 20240 states and 58089 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:40,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:40,971 INFO L93 Difference]: Finished difference Result 21080 states and 60318 transitions. [2022-03-01 15:52:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 15:52:40,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:41,008 INFO L225 Difference]: With dead ends: 21080 [2022-03-01 15:52:41,008 INFO L226 Difference]: Without dead ends: 21008 [2022-03-01 15:52:41,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:52:41,009 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 288 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:41,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1358 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:52:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21008 states. [2022-03-01 15:52:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21008 to 20256. [2022-03-01 15:52:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20256 states, 20255 states have (on average 2.8698592940014813) internal successors, (58129), 20255 states have internal predecessors, (58129), 0 states have call successors, (0), 0 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 15:52:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20256 states to 20256 states and 58129 transitions. [2022-03-01 15:52:41,387 INFO L78 Accepts]: Start accepts. Automaton has 20256 states and 58129 transitions. Word has length 75 [2022-03-01 15:52:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:41,387 INFO L470 AbstractCegarLoop]: Abstraction has 20256 states and 58129 transitions. [2022-03-01 15:52:41,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 20256 states and 58129 transitions. [2022-03-01 15:52:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:41,415 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:41,415 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, 1, 1, 1] [2022-03-01 15:52:41,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:41,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-03-01 15:52:41,631 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:41,631 INFO L85 PathProgramCache]: Analyzing trace with hash 681668142, now seen corresponding path program 51 times [2022-03-01 15:52:41,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:41,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327832039] [2022-03-01 15:52:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:41,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:41,729 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 15:52:41,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:41,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327832039] [2022-03-01 15:52:41,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327832039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:41,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801148466] [2022-03-01 15:52:41,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:52:41,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:41,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:41,731 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:41,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-01 15:52:41,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:52:41,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:41,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:41,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:41,953 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 15:52:41,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:42,155 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 15:52:42,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801148466] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:42,155 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:42,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:52:42,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558802972] [2022-03-01 15:52:42,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:42,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:52:42,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:52:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:52:42,156 INFO L87 Difference]: Start difference. First operand 20256 states and 58129 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:52:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:43,746 INFO L93 Difference]: Finished difference Result 25665 states and 73225 transitions. [2022-03-01 15:52:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 15:52:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:43,799 INFO L225 Difference]: With dead ends: 25665 [2022-03-01 15:52:43,799 INFO L226 Difference]: Without dead ends: 25617 [2022-03-01 15:52:43,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2766, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 15:52:43,800 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 465 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:43,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1548 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:52:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25617 states. [2022-03-01 15:52:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25617 to 22132. [2022-03-01 15:52:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22132 states, 22131 states have (on average 2.8727124847498984) internal successors, (63576), 22131 states have internal predecessors, (63576), 0 states have call successors, (0), 0 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 15:52:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22132 states to 22132 states and 63576 transitions. [2022-03-01 15:52:44,257 INFO L78 Accepts]: Start accepts. Automaton has 22132 states and 63576 transitions. Word has length 75 [2022-03-01 15:52:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:44,257 INFO L470 AbstractCegarLoop]: Abstraction has 22132 states and 63576 transitions. [2022-03-01 15:52:44,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 15:52:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 22132 states and 63576 transitions. [2022-03-01 15:52:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:44,291 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:44,291 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, 1, 1, 1] [2022-03-01 15:52:44,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:44,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:44,507 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash 702385528, now seen corresponding path program 52 times [2022-03-01 15:52:44,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:44,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151183589] [2022-03-01 15:52:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:44,599 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 15:52:44,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:44,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151183589] [2022-03-01 15:52:44,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151183589] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:44,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010498723] [2022-03-01 15:52:44,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:52:44,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:44,601 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:44,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-01 15:52:44,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:52:44,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:44,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:44,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:44,831 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 15:52:44,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:45,013 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 15:52:45,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010498723] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:45,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:45,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-01 15:52:45,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674503666] [2022-03-01 15:52:45,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:45,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:52:45,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:52:45,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:52:45,015 INFO L87 Difference]: Start difference. First operand 22132 states and 63576 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:46,333 INFO L93 Difference]: Finished difference Result 25750 states and 73381 transitions. [2022-03-01 15:52:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:52:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:46,396 INFO L225 Difference]: With dead ends: 25750 [2022-03-01 15:52:46,396 INFO L226 Difference]: Without dead ends: 25690 [2022-03-01 15:52:46,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=707, Invalid=2833, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 15:52:46,396 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 618 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:46,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1390 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:52:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25690 states. [2022-03-01 15:52:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25690 to 21240. [2022-03-01 15:52:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 0 states have call successors, (0), 0 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 15:52:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-03-01 15:52:46,955 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-03-01 15:52:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:46,956 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-03-01 15:52:46,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-03-01 15:52:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:46,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:46,996 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, 1, 1, 1] [2022-03-01 15:52:47,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-03-01 15:52:47,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-01 15:52:47,211 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash 383973422, now seen corresponding path program 53 times [2022-03-01 15:52:47,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:47,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089788960] [2022-03-01 15:52:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:47,291 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 15:52:47,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:47,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089788960] [2022-03-01 15:52:47,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089788960] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:47,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632324591] [2022-03-01 15:52:47,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:52:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:47,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:47,292 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:47,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-01 15:52:47,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:52:47,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:47,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:47,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:47,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:47,700 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 15:52:47,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632324591] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:47,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:47,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 15:52:47,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338584934] [2022-03-01 15:52:47,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:47,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:52:47,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:47,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:52:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-03-01 15:52:47,702 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:48,405 INFO L93 Difference]: Finished difference Result 22388 states and 63935 transitions. [2022-03-01 15:52:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 15:52:48,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:48,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:48,452 INFO L225 Difference]: With dead ends: 22388 [2022-03-01 15:52:48,452 INFO L226 Difference]: Without dead ends: 22316 [2022-03-01 15:52:48,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=1553, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:52:48,453 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 331 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:48,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1369 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:52:48,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22316 states. [2022-03-01 15:52:48,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22316 to 21248. [2022-03-01 15:52:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21248 states, 21247 states have (on average 2.8691579987762976) internal successors, (60961), 21247 states have internal predecessors, (60961), 0 states have call successors, (0), 0 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 15:52:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 60961 transitions. [2022-03-01 15:52:49,054 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 60961 transitions. Word has length 75 [2022-03-01 15:52:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:49,055 INFO L470 AbstractCegarLoop]: Abstraction has 21248 states and 60961 transitions. [2022-03-01 15:52:49,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:52:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 60961 transitions. [2022-03-01 15:52:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 15:52:49,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:49,091 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, 1, 1, 1] [2022-03-01 15:52:49,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:49,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:49,307 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash 617413212, now seen corresponding path program 54 times [2022-03-01 15:52:49,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:49,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005382027] [2022-03-01 15:52:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:49,381 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 15:52:49,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:49,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005382027] [2022-03-01 15:52:49,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005382027] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:49,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173342934] [2022-03-01 15:52:49,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:52:49,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:49,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:49,382 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:49,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-01 15:52:49,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:52:49,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:49,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 15:52:49,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:49,582 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 15:52:49,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:49,729 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 15:52:49,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173342934] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:49,729 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:49,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:52:49,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244160943] [2022-03-01 15:52:49,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:49,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:52:49,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:52:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:52:49,730 INFO L87 Difference]: Start difference. First operand 21248 states and 60961 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:50,073 INFO L93 Difference]: Finished difference Result 21972 states and 62883 transitions. [2022-03-01 15:52:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:52:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 15:52:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:50,115 INFO L225 Difference]: With dead ends: 21972 [2022-03-01 15:52:50,116 INFO L226 Difference]: Without dead ends: 21924 [2022-03-01 15:52:50,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-03-01 15:52:50,116 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 242 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:50,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1122 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:52:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21924 states. [2022-03-01 15:52:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21924 to 21240. [2022-03-01 15:52:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 0 states have call successors, (0), 0 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 15:52:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-03-01 15:52:50,532 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-03-01 15:52:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:50,532 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-03-01 15:52:50,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:52:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-03-01 15:52:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-01 15:52:50,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:50,563 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:52:50,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:50,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:50,767 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 710815400, now seen corresponding path program 55 times [2022-03-01 15:52:50,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:50,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208800439] [2022-03-01 15:52:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:52:50,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:50,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208800439] [2022-03-01 15:52:50,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208800439] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:50,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171566159] [2022-03-01 15:52:50,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:52:50,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:50,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:50,897 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:50,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-01 15:52:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 15:52:51,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:52:51,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:52:51,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171566159] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:51,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:51,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-03-01 15:52:51,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106774257] [2022-03-01 15:52:51,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:51,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 15:52:51,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 15:52:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 15:52:51,327 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:51,541 INFO L93 Difference]: Finished difference Result 35624 states and 103549 transitions. [2022-03-01 15:52:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 15:52:51,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-03-01 15:52:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:51,654 INFO L225 Difference]: With dead ends: 35624 [2022-03-01 15:52:51,655 INFO L226 Difference]: Without dead ends: 35321 [2022-03-01 15:52:51,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:52:51,655 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 125 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:51,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 828 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:52:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35321 states. [2022-03-01 15:52:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35321 to 29881. [2022-03-01 15:52:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29881 states, 29880 states have (on average 2.897657295850067) internal successors, (86582), 29880 states have internal predecessors, (86582), 0 states have call successors, (0), 0 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 15:52:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29881 states to 29881 states and 86582 transitions. [2022-03-01 15:52:52,365 INFO L78 Accepts]: Start accepts. Automaton has 29881 states and 86582 transitions. Word has length 80 [2022-03-01 15:52:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:52,365 INFO L470 AbstractCegarLoop]: Abstraction has 29881 states and 86582 transitions. [2022-03-01 15:52:52,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 29881 states and 86582 transitions. [2022-03-01 15:52:52,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:52:52,415 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:52,415 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:52:52,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:52,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:52,619 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash -58756830, now seen corresponding path program 56 times [2022-03-01 15:52:52,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:52,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471444799] [2022-03-01 15:52:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:52,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:52,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:52,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471444799] [2022-03-01 15:52:52,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471444799] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:52,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975945647] [2022-03-01 15:52:52,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:52:52,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:52,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:52,822 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:52,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-01 15:52:52,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:52:52,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:52,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:52:52,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:53,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:53,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975945647] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:53,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:53,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:52:53,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612209614] [2022-03-01 15:52:53,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:53,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:52:53,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:52:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:52:53,538 INFO L87 Difference]: Start difference. First operand 29881 states and 86582 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:53:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:53:06,793 INFO L93 Difference]: Finished difference Result 45744 states and 130515 transitions. [2022-03-01 15:53:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-03-01 15:53:06,794 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:53:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:53:06,933 INFO L225 Difference]: With dead ends: 45744 [2022-03-01 15:53:06,933 INFO L226 Difference]: Without dead ends: 45174 [2022-03-01 15:53:06,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13480 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4705, Invalid=30827, Unknown=0, NotChecked=0, Total=35532 [2022-03-01 15:53:06,937 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2400 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:53:06,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 4290 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-01 15:53:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45174 states. [2022-03-01 15:53:07,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45174 to 32125. [2022-03-01 15:53:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32125 states, 32124 states have (on average 2.8950628813348276) internal successors, (93001), 32124 states have internal predecessors, (93001), 0 states have call successors, (0), 0 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 15:53:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32125 states to 32125 states and 93001 transitions. [2022-03-01 15:53:07,737 INFO L78 Accepts]: Start accepts. Automaton has 32125 states and 93001 transitions. Word has length 85 [2022-03-01 15:53:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:53:07,737 INFO L470 AbstractCegarLoop]: Abstraction has 32125 states and 93001 transitions. [2022-03-01 15:53:07,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:53:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 32125 states and 93001 transitions. [2022-03-01 15:53:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:53:07,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:53:07,787 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:53:07,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-01 15:53:07,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:53:07,993 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:53:07,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:53:07,994 INFO L85 PathProgramCache]: Analyzing trace with hash -101477990, now seen corresponding path program 57 times [2022-03-01 15:53:07,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:53:07,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213645581] [2022-03-01 15:53:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:53:07,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:53:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:53:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:08,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:53:08,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213645581] [2022-03-01 15:53:08,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213645581] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:53:08,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325448343] [2022-03-01 15:53:08,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:53:08,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:53:08,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:53:08,158 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:53:08,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-01 15:53:08,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:53:08,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:53:08,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:53:08,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:53:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:08,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:53:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:08,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325448343] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:53:08,733 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:53:08,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-01 15:53:08,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328334136] [2022-03-01 15:53:08,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:53:08,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:53:08,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:53:08,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:53:08,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:53:08,734 INFO L87 Difference]: Start difference. First operand 32125 states and 93001 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:53:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:53:26,646 INFO L93 Difference]: Finished difference Result 41564 states and 118888 transitions. [2022-03-01 15:53:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-03-01 15:53:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:53:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:53:26,729 INFO L225 Difference]: With dead ends: 41564 [2022-03-01 15:53:26,729 INFO L226 Difference]: Without dead ends: 41468 [2022-03-01 15:53:26,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10995 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=3772, Invalid=25640, Unknown=0, NotChecked=0, Total=29412 [2022-03-01 15:53:26,731 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1196 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:53:26,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 4204 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-01 15:53:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41468 states. [2022-03-01 15:53:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41468 to 34425. [2022-03-01 15:53:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34425 states, 34424 states have (on average 2.8923425517081105) internal successors, (99566), 34424 states have internal predecessors, (99566), 0 states have call successors, (0), 0 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 15:53:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34425 states to 34425 states and 99566 transitions. [2022-03-01 15:53:27,573 INFO L78 Accepts]: Start accepts. Automaton has 34425 states and 99566 transitions. Word has length 85 [2022-03-01 15:53:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:53:27,573 INFO L470 AbstractCegarLoop]: Abstraction has 34425 states and 99566 transitions. [2022-03-01 15:53:27,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:53:27,573 INFO L276 IsEmpty]: Start isEmpty. Operand 34425 states and 99566 transitions. [2022-03-01 15:53:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:53:27,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:53:27,636 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:53:27,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-01 15:53:27,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-01 15:53:27,853 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:53:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:53:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash -80760604, now seen corresponding path program 58 times [2022-03-01 15:53:27,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:53:27,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105976132] [2022-03-01 15:53:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:53:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:53:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:53:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:28,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:53:28,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105976132] [2022-03-01 15:53:28,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105976132] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:53:28,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839265126] [2022-03-01 15:53:28,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:53:28,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:53:28,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:53:28,055 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:53:28,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-01 15:53:28,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:53:28,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:53:28,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:53:28,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:53:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:28,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:53:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:29,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839265126] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:53:29,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:53:29,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:53:29,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417018564] [2022-03-01 15:53:29,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:53:29,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:53:29,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:53:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:53:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:53:29,038 INFO L87 Difference]: Start difference. First operand 34425 states and 99566 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:54:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:54:02,776 INFO L93 Difference]: Finished difference Result 48154 states and 137808 transitions. [2022-03-01 15:54:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-03-01 15:54:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:54:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:54:02,869 INFO L225 Difference]: With dead ends: 48154 [2022-03-01 15:54:02,869 INFO L226 Difference]: Without dead ends: 48064 [2022-03-01 15:54:02,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22015 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=7064, Invalid=47458, Unknown=0, NotChecked=0, Total=54522 [2022-03-01 15:54:02,886 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2138 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:54:02,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2138 Valid, 4459 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-01 15:54:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48064 states. [2022-03-01 15:54:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48064 to 36521. [2022-03-01 15:54:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36521 states, 36520 states have (on average 2.894687842278204) internal successors, (105714), 36520 states have internal predecessors, (105714), 0 states have call successors, (0), 0 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 15:54:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36521 states to 36521 states and 105714 transitions. [2022-03-01 15:54:03,851 INFO L78 Accepts]: Start accepts. Automaton has 36521 states and 105714 transitions. Word has length 85 [2022-03-01 15:54:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:54:03,852 INFO L470 AbstractCegarLoop]: Abstraction has 36521 states and 105714 transitions. [2022-03-01 15:54:03,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:54:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 36521 states and 105714 transitions. [2022-03-01 15:54:03,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:54:03,907 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:54:03,909 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:54:03,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-01 15:54:04,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-03-01 15:54:04,115 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:54:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:54:04,116 INFO L85 PathProgramCache]: Analyzing trace with hash -478989562, now seen corresponding path program 59 times [2022-03-01 15:54:04,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:54:04,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163696111] [2022-03-01 15:54:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:54:04,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:54:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:54:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:04,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:54:04,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163696111] [2022-03-01 15:54:04,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163696111] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:54:04,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235989623] [2022-03-01 15:54:04,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:54:04,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:54:04,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:54:04,310 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:54:04,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-01 15:54:04,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 15:54:04,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:54:04,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:54:04,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:54:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:04,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:54:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:05,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235989623] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:54:05,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:54:05,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:54:05,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848669557] [2022-03-01 15:54:05,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:54:05,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:54:05,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:54:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:54:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:54:05,006 INFO L87 Difference]: Start difference. First operand 36521 states and 105714 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:54:36,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:54:36,935 INFO L93 Difference]: Finished difference Result 50104 states and 143276 transitions. [2022-03-01 15:54:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2022-03-01 15:54:36,936 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:54:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:54:37,047 INFO L225 Difference]: With dead ends: 50104 [2022-03-01 15:54:37,047 INFO L226 Difference]: Without dead ends: 49879 [2022-03-01 15:54:37,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32669 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=8805, Invalid=69315, Unknown=0, NotChecked=0, Total=78120 [2022-03-01 15:54:37,051 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1859 mSDsluCounter, 5844 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:54:37,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 5658 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 15:54:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49879 states. [2022-03-01 15:54:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49879 to 37749. [2022-03-01 15:54:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37749 states, 37748 states have (on average 2.890722687294691) internal successors, (109119), 37748 states have internal predecessors, (109119), 0 states have call successors, (0), 0 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 15:54:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37749 states to 37749 states and 109119 transitions. [2022-03-01 15:54:37,980 INFO L78 Accepts]: Start accepts. Automaton has 37749 states and 109119 transitions. Word has length 85 [2022-03-01 15:54:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:54:37,980 INFO L470 AbstractCegarLoop]: Abstraction has 37749 states and 109119 transitions. [2022-03-01 15:54:37,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:54:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 37749 states and 109119 transitions. [2022-03-01 15:54:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:54:38,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:54:38,043 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:54:38,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-01 15:54:38,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-01 15:54:38,259 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:54:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:54:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1886244612, now seen corresponding path program 60 times [2022-03-01 15:54:38,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:54:38,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002251312] [2022-03-01 15:54:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:54:38,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:54:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:54:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:38,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:54:38,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002251312] [2022-03-01 15:54:38,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002251312] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:54:38,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300116289] [2022-03-01 15:54:38,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:54:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:54:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:54:38,454 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:54:38,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-01 15:54:38,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:54:38,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:54:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:54:38,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:54:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:38,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:54:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:39,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300116289] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:54:39,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:54:39,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-01 15:54:39,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154982361] [2022-03-01 15:54:39,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:54:39,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:54:39,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:54:39,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:54:39,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:54:39,193 INFO L87 Difference]: Start difference. First operand 37749 states and 109119 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:54:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:54:56,274 INFO L93 Difference]: Finished difference Result 49124 states and 140439 transitions. [2022-03-01 15:54:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-01 15:54:56,274 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:54:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:54:56,382 INFO L225 Difference]: With dead ends: 49124 [2022-03-01 15:54:56,382 INFO L226 Difference]: Without dead ends: 49052 [2022-03-01 15:54:56,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=3353, Invalid=22407, Unknown=0, NotChecked=0, Total=25760 [2022-03-01 15:54:56,383 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1256 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:54:56,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 3868 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 15:54:56,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49052 states. [2022-03-01 15:54:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49052 to 40385. [2022-03-01 15:54:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40385 states, 40384 states have (on average 2.8884706814580032) internal successors, (116648), 40384 states have internal predecessors, (116648), 0 states have call successors, (0), 0 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 15:54:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40385 states to 40385 states and 116648 transitions. [2022-03-01 15:54:57,356 INFO L78 Accepts]: Start accepts. Automaton has 40385 states and 116648 transitions. Word has length 85 [2022-03-01 15:54:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:54:57,356 INFO L470 AbstractCegarLoop]: Abstraction has 40385 states and 116648 transitions. [2022-03-01 15:54:57,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:54:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 40385 states and 116648 transitions. [2022-03-01 15:54:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:54:57,427 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:54:57,427 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:54:57,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-01 15:54:57,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:54:57,631 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:54:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:54:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1865527226, now seen corresponding path program 61 times [2022-03-01 15:54:57,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:54:57,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973764457] [2022-03-01 15:54:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:54:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:54:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:54:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:57,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:54:57,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973764457] [2022-03-01 15:54:57,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973764457] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:54:57,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969310849] [2022-03-01 15:54:57,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:54:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:54:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:54:57,872 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:54:57,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-01 15:54:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:54:57,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:54:57,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:54:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:58,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:54:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:54:58,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969310849] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:54:58,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:54:58,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:54:58,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048109535] [2022-03-01 15:54:58,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:54:58,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:54:58,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:54:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:54:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:54:58,520 INFO L87 Difference]: Start difference. First operand 40385 states and 116648 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:55:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:55:16,333 INFO L93 Difference]: Finished difference Result 53305 states and 152463 transitions. [2022-03-01 15:55:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-03-01 15:55:16,333 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:55:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:55:16,487 INFO L225 Difference]: With dead ends: 53305 [2022-03-01 15:55:16,487 INFO L226 Difference]: Without dead ends: 53215 [2022-03-01 15:55:16,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16013 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=5318, Invalid=36502, Unknown=0, NotChecked=0, Total=41820 [2022-03-01 15:55:16,490 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1761 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:55:16,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 4210 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-01 15:55:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53215 states. [2022-03-01 15:55:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53215 to 41541. [2022-03-01 15:55:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41541 states, 41540 states have (on average 2.887987481945113) internal successors, (119967), 41540 states have internal predecessors, (119967), 0 states have call successors, (0), 0 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 15:55:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41541 states to 41541 states and 119967 transitions. [2022-03-01 15:55:17,778 INFO L78 Accepts]: Start accepts. Automaton has 41541 states and 119967 transitions. Word has length 85 [2022-03-01 15:55:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:55:17,778 INFO L470 AbstractCegarLoop]: Abstraction has 41541 states and 119967 transitions. [2022-03-01 15:55:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:55:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 41541 states and 119967 transitions. [2022-03-01 15:55:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:55:18,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:55:18,049 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:55:18,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-01 15:55:18,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:55:18,250 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:55:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:55:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2111027964, now seen corresponding path program 62 times [2022-03-01 15:55:18,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:55:18,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163700302] [2022-03-01 15:55:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:55:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:55:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:55:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:18,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:55:18,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163700302] [2022-03-01 15:55:18,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163700302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:55:18,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608186889] [2022-03-01 15:55:18,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:55:18,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:55:18,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:55:18,384 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:55:18,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-01 15:55:18,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:55:18,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:55:18,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:55:18,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:55:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:18,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:55:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:19,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608186889] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:55:19,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:55:19,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-03-01 15:55:19,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632914015] [2022-03-01 15:55:19,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:55:19,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:55:19,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:55:19,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:55:19,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:55:19,089 INFO L87 Difference]: Start difference. First operand 41541 states and 119967 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:55:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:55:31,627 INFO L93 Difference]: Finished difference Result 44680 states and 128452 transitions. [2022-03-01 15:55:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-01 15:55:31,627 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:55:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:55:31,876 INFO L225 Difference]: With dead ends: 44680 [2022-03-01 15:55:31,876 INFO L226 Difference]: Without dead ends: 44572 [2022-03-01 15:55:31,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6583 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2128, Invalid=16504, Unknown=0, NotChecked=0, Total=18632 [2022-03-01 15:55:31,877 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 854 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:55:31,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 3173 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-01 15:55:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44572 states. [2022-03-01 15:55:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44572 to 41641. [2022-03-01 15:55:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41641 states, 41640 states have (on average 2.887367915465898) internal successors, (120230), 41640 states have internal predecessors, (120230), 0 states have call successors, (0), 0 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 15:55:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41641 states to 41641 states and 120230 transitions. [2022-03-01 15:55:33,007 INFO L78 Accepts]: Start accepts. Automaton has 41641 states and 120230 transitions. Word has length 85 [2022-03-01 15:55:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:55:33,007 INFO L470 AbstractCegarLoop]: Abstraction has 41641 states and 120230 transitions. [2022-03-01 15:55:33,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:55:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 41641 states and 120230 transitions. [2022-03-01 15:55:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:55:33,354 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:55:33,354 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:55:33,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-01 15:55:33,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:55:33,571 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:55:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:55:33,571 INFO L85 PathProgramCache]: Analyzing trace with hash -372347426, now seen corresponding path program 63 times [2022-03-01 15:55:33,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:55:33,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787056155] [2022-03-01 15:55:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:55:33,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:55:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:55:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:33,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:55:33,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787056155] [2022-03-01 15:55:33,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787056155] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:55:33,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145925569] [2022-03-01 15:55:33,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:55:33,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:55:33,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:55:33,868 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:55:33,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-01 15:55:33,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:55:33,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:55:33,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:55:33,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:55:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:34,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:55:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:34,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145925569] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:55:34,756 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:55:34,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-01 15:55:34,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670757077] [2022-03-01 15:55:34,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:55:34,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:55:34,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:55:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:55:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:55:34,757 INFO L87 Difference]: Start difference. First operand 41641 states and 120230 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:55:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:55:48,091 INFO L93 Difference]: Finished difference Result 49660 states and 142447 transitions. [2022-03-01 15:55:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-03-01 15:55:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:55:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:55:48,215 INFO L225 Difference]: With dead ends: 49660 [2022-03-01 15:55:48,215 INFO L226 Difference]: Without dead ends: 49540 [2022-03-01 15:55:48,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7130 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2555, Invalid=18037, Unknown=0, NotChecked=0, Total=20592 [2022-03-01 15:55:48,216 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1237 mSDsluCounter, 4768 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:55:48,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 4586 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 15:55:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49540 states. [2022-03-01 15:55:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49540 to 44153. [2022-03-01 15:55:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44153 states, 44152 states have (on average 2.8891556441384307) internal successors, (127562), 44152 states have internal predecessors, (127562), 0 states have call successors, (0), 0 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 15:55:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44153 states to 44153 states and 127562 transitions. [2022-03-01 15:55:49,524 INFO L78 Accepts]: Start accepts. Automaton has 44153 states and 127562 transitions. Word has length 85 [2022-03-01 15:55:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:55:49,524 INFO L470 AbstractCegarLoop]: Abstraction has 44153 states and 127562 transitions. [2022-03-01 15:55:49,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:55:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 44153 states and 127562 transitions. [2022-03-01 15:55:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:55:49,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:55:49,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:55:49,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-01 15:55:49,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-03-01 15:55:49,810 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:55:49,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:55:49,810 INFO L85 PathProgramCache]: Analyzing trace with hash -351630040, now seen corresponding path program 64 times [2022-03-01 15:55:49,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:55:49,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300206311] [2022-03-01 15:55:49,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:55:49,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:55:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:55:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:50,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:55:50,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300206311] [2022-03-01 15:55:50,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300206311] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:55:50,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314327703] [2022-03-01 15:55:50,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:55:50,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:55:50,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:55:50,228 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:55:50,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-01 15:55:50,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:55:50,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:55:50,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:55:50,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:55:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:50,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:55:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:55:51,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314327703] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:55:51,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:55:51,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:55:51,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554423229] [2022-03-01 15:55:51,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:55:51,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:55:51,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:55:51,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:55:51,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:55:51,009 INFO L87 Difference]: Start difference. First operand 44153 states and 127562 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:56:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:56:16,230 INFO L93 Difference]: Finished difference Result 53685 states and 153583 transitions. [2022-03-01 15:56:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-03-01 15:56:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:56:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:56:16,383 INFO L225 Difference]: With dead ends: 53685 [2022-03-01 15:56:16,383 INFO L226 Difference]: Without dead ends: 53580 [2022-03-01 15:56:16,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16397 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=5127, Invalid=37515, Unknown=0, NotChecked=0, Total=42642 [2022-03-01 15:56:16,385 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1849 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:56:16,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 4920 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-01 15:56:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53580 states. [2022-03-01 15:56:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53580 to 43241. [2022-03-01 15:56:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43241 states, 43240 states have (on average 2.8871877890841815) internal successors, (124842), 43240 states have internal predecessors, (124842), 0 states have call successors, (0), 0 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 15:56:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43241 states to 43241 states and 124842 transitions. [2022-03-01 15:56:17,834 INFO L78 Accepts]: Start accepts. Automaton has 43241 states and 124842 transitions. Word has length 85 [2022-03-01 15:56:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:56:17,834 INFO L470 AbstractCegarLoop]: Abstraction has 43241 states and 124842 transitions. [2022-03-01 15:56:17,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:56:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 43241 states and 124842 transitions. [2022-03-01 15:56:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:56:17,913 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:56:17,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:56:17,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-01 15:56:18,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:56:18,128 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:56:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:56:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash -749858998, now seen corresponding path program 65 times [2022-03-01 15:56:18,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:56:18,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966256977] [2022-03-01 15:56:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:56:18,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:56:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:56:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:18,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:56:18,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966256977] [2022-03-01 15:56:18,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966256977] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:56:18,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908111273] [2022-03-01 15:56:18,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:56:18,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:56:18,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:56:18,363 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:56:18,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-01 15:56:18,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 15:56:18,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:56:18,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:56:18,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:56:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:18,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:56:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:19,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908111273] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:56:19,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:56:19,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:56:19,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834321570] [2022-03-01 15:56:19,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:56:19,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:56:19,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:56:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:56:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:56:19,224 INFO L87 Difference]: Start difference. First operand 43241 states and 124842 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:56:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:56:44,644 INFO L93 Difference]: Finished difference Result 53446 states and 152839 transitions. [2022-03-01 15:56:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-03-01 15:56:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:56:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:56:44,766 INFO L225 Difference]: With dead ends: 53446 [2022-03-01 15:56:44,766 INFO L226 Difference]: Without dead ends: 53191 [2022-03-01 15:56:44,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23523 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=6453, Invalid=51869, Unknown=0, NotChecked=0, Total=58322 [2022-03-01 15:56:44,770 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1920 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:56:44,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1920 Valid, 4531 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-01 15:56:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53191 states. [2022-03-01 15:56:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53191 to 43337. [2022-03-01 15:56:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43337 states, 43336 states have (on average 2.885776259922466) internal successors, (125058), 43336 states have internal predecessors, (125058), 0 states have call successors, (0), 0 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 15:56:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43337 states to 43337 states and 125058 transitions. [2022-03-01 15:56:45,999 INFO L78 Accepts]: Start accepts. Automaton has 43337 states and 125058 transitions. Word has length 85 [2022-03-01 15:56:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:56:45,999 INFO L470 AbstractCegarLoop]: Abstraction has 43337 states and 125058 transitions. [2022-03-01 15:56:45,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:56:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 43337 states and 125058 transitions. [2022-03-01 15:56:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:56:46,077 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:56:46,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:56:46,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-01 15:56:46,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-01 15:56:46,279 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:56:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:56:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2137853248, now seen corresponding path program 66 times [2022-03-01 15:56:46,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:56:46,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999112582] [2022-03-01 15:56:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:56:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:56:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:56:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:46,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:56:46,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999112582] [2022-03-01 15:56:46,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999112582] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:56:46,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934420099] [2022-03-01 15:56:46,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:56:46,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:56:46,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:56:46,475 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:56:46,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-01 15:56:46,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:56:46,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:56:46,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:56:46,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:56:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:46,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:56:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:47,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934420099] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:56:47,236 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:56:47,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-01 15:56:47,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475121730] [2022-03-01 15:56:47,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:56:47,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:56:47,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:56:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:56:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:56:47,237 INFO L87 Difference]: Start difference. First operand 43337 states and 125058 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:57:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:57:06,739 INFO L93 Difference]: Finished difference Result 50227 states and 143883 transitions. [2022-03-01 15:57:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-03-01 15:57:06,739 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:57:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:57:06,872 INFO L225 Difference]: With dead ends: 50227 [2022-03-01 15:57:06,872 INFO L226 Difference]: Without dead ends: 50155 [2022-03-01 15:57:06,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9855 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=3346, Invalid=23714, Unknown=0, NotChecked=0, Total=27060 [2022-03-01 15:57:06,874 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1312 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:57:06,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3649 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-01 15:57:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50155 states. [2022-03-01 15:57:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50155 to 44785. [2022-03-01 15:57:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44785 states, 44784 states have (on average 2.8848695962843873) internal successors, (129196), 44784 states have internal predecessors, (129196), 0 states have call successors, (0), 0 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 15:57:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44785 states to 44785 states and 129196 transitions. [2022-03-01 15:57:08,099 INFO L78 Accepts]: Start accepts. Automaton has 44785 states and 129196 transitions. Word has length 85 [2022-03-01 15:57:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:57:08,099 INFO L470 AbstractCegarLoop]: Abstraction has 44785 states and 129196 transitions. [2022-03-01 15:57:08,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:57:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 44785 states and 129196 transitions. [2022-03-01 15:57:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:57:08,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:57:08,176 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:57:08,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-01 15:57:08,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-03-01 15:57:08,392 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:57:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:57:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2136396662, now seen corresponding path program 67 times [2022-03-01 15:57:08,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:57:08,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518442331] [2022-03-01 15:57:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:57:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:57:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:57:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:08,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:57:08,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518442331] [2022-03-01 15:57:08,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518442331] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:57:08,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338276227] [2022-03-01 15:57:08,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:57:08,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:57:08,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:57:08,615 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:57:08,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-01 15:57:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:57:08,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:57:08,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:57:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:08,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:57:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:09,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338276227] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:57:09,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:57:09,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:57:09,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874756854] [2022-03-01 15:57:09,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:57:09,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:57:09,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:57:09,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:57:09,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:57:09,515 INFO L87 Difference]: Start difference. First operand 44785 states and 129196 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:57:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:57:43,352 INFO L93 Difference]: Finished difference Result 56654 states and 162214 transitions. [2022-03-01 15:57:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2022-03-01 15:57:43,352 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:57:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:57:43,505 INFO L225 Difference]: With dead ends: 56654 [2022-03-01 15:57:43,506 INFO L226 Difference]: Without dead ends: 56564 [2022-03-01 15:57:43,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21249 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=6131, Invalid=47461, Unknown=0, NotChecked=0, Total=53592 [2022-03-01 15:57:43,509 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1829 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:57:43,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 4348 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 15:57:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56564 states. [2022-03-01 15:57:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56564 to 46285. [2022-03-01 15:57:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46285 states, 46284 states have (on average 2.88386915564774) internal successors, (133477), 46284 states have internal predecessors, (133477), 0 states have call successors, (0), 0 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 15:57:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46285 states to 46285 states and 133477 transitions. [2022-03-01 15:57:44,809 INFO L78 Accepts]: Start accepts. Automaton has 46285 states and 133477 transitions. Word has length 85 [2022-03-01 15:57:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:57:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 46285 states and 133477 transitions. [2022-03-01 15:57:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:57:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 46285 states and 133477 transitions. [2022-03-01 15:57:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:57:45,013 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:57:45,013 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:57:45,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-01 15:57:45,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-01 15:57:45,223 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:57:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:57:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1840158528, now seen corresponding path program 68 times [2022-03-01 15:57:45,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:57:45,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294943502] [2022-03-01 15:57:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:57:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:57:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:57:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:45,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:57:45,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294943502] [2022-03-01 15:57:45,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294943502] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:57:45,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744198175] [2022-03-01 15:57:45,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:57:45,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:57:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:57:45,392 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:57:45,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-01 15:57:45,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:57:45,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:57:45,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:57:45,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:57:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:45,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:57:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:46,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744198175] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:57:46,167 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:57:46,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-03-01 15:57:46,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942524173] [2022-03-01 15:57:46,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:57:46,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:57:46,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:57:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:57:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:57:46,168 INFO L87 Difference]: Start difference. First operand 46285 states and 133477 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:05,944 INFO L93 Difference]: Finished difference Result 48661 states and 139878 transitions. [2022-03-01 15:58:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-01 15:58:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:58:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:06,033 INFO L225 Difference]: With dead ends: 48661 [2022-03-01 15:58:06,033 INFO L226 Difference]: Without dead ends: 48553 [2022-03-01 15:58:06,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=2558, Invalid=20698, Unknown=0, NotChecked=0, Total=23256 [2022-03-01 15:58:06,035 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 862 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:06,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3347 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 15:58:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48553 states. [2022-03-01 15:58:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48553 to 46373. [2022-03-01 15:58:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46373 states, 46372 states have (on average 2.883442594669197) internal successors, (133711), 46372 states have internal predecessors, (133711), 0 states have call successors, (0), 0 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 15:58:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46373 states to 46373 states and 133711 transitions. [2022-03-01 15:58:06,982 INFO L78 Accepts]: Start accepts. Automaton has 46373 states and 133711 transitions. Word has length 85 [2022-03-01 15:58:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:06,982 INFO L470 AbstractCegarLoop]: Abstraction has 46373 states and 133711 transitions. [2022-03-01 15:58:06,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 46373 states and 133711 transitions. [2022-03-01 15:58:07,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:58:07,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:07,049 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:58:07,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:07,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-03-01 15:58:07,251 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1642898954, now seen corresponding path program 69 times [2022-03-01 15:58:07,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:07,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444526460] [2022-03-01 15:58:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:07,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:07,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:07,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444526460] [2022-03-01 15:58:07,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444526460] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:07,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708168049] [2022-03-01 15:58:07,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:58:07,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:07,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:07,641 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:07,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-01 15:58:07,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:58:07,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:07,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:58:07,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:08,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:08,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708168049] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:08,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:08,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-01 15:58:08,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927803328] [2022-03-01 15:58:08,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:08,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:58:08,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:08,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:58:08,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:58:08,402 INFO L87 Difference]: Start difference. First operand 46373 states and 133711 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:58:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:25,637 INFO L93 Difference]: Finished difference Result 57743 states and 165651 transitions. [2022-03-01 15:58:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-01 15:58:25,637 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:58:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:25,785 INFO L225 Difference]: With dead ends: 57743 [2022-03-01 15:58:25,785 INFO L226 Difference]: Without dead ends: 57671 [2022-03-01 15:58:25,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7360 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=2873, Invalid=18007, Unknown=0, NotChecked=0, Total=20880 [2022-03-01 15:58:25,786 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1303 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:25,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 3884 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 15:58:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57671 states. [2022-03-01 15:58:26,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57671 to 49169. [2022-03-01 15:58:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49169 states, 49168 states have (on average 2.884396355353075) internal successors, (141820), 49168 states have internal predecessors, (141820), 0 states have call successors, (0), 0 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 15:58:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49169 states to 49169 states and 141820 transitions. [2022-03-01 15:58:27,105 INFO L78 Accepts]: Start accepts. Automaton has 49169 states and 141820 transitions. Word has length 85 [2022-03-01 15:58:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:27,106 INFO L470 AbstractCegarLoop]: Abstraction has 49169 states and 141820 transitions. [2022-03-01 15:58:27,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:58:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 49169 states and 141820 transitions. [2022-03-01 15:58:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:58:27,378 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:27,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:58:27,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:27,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:27,596 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:27,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1663616340, now seen corresponding path program 70 times [2022-03-01 15:58:27,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:27,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325968] [2022-03-01 15:58:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:27,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:27,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:27,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325968] [2022-03-01 15:58:27,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:27,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297826688] [2022-03-01 15:58:27,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:58:27,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:27,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:27,782 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:27,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-01 15:58:27,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:58:27,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:27,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:58:27,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:28,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:28,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297826688] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:28,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:28,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:58:28,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747148113] [2022-03-01 15:58:28,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:28,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:58:28,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:58:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:58:28,725 INFO L87 Difference]: Start difference. First operand 49169 states and 141820 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:58:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:51,967 INFO L93 Difference]: Finished difference Result 59715 states and 170993 transitions. [2022-03-01 15:58:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-03-01 15:58:51,968 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 15:58:51,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:52,119 INFO L225 Difference]: With dead ends: 59715 [2022-03-01 15:58:52,119 INFO L226 Difference]: Without dead ends: 59655 [2022-03-01 15:58:52,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12342 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=4300, Invalid=28642, Unknown=0, NotChecked=0, Total=32942 [2022-03-01 15:58:52,121 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1858 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:52,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 3787 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-01 15:58:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59655 states. [2022-03-01 15:58:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59655 to 47205. [2022-03-01 15:58:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47205 states, 47204 states have (on average 2.881853232776883) internal successors, (136035), 47204 states have internal predecessors, (136035), 0 states have call successors, (0), 0 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 15:58:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47205 states to 47205 states and 136035 transitions. [2022-03-01 15:58:53,536 INFO L78 Accepts]: Start accepts. Automaton has 47205 states and 136035 transitions. Word has length 85 [2022-03-01 15:58:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:53,536 INFO L470 AbstractCegarLoop]: Abstraction has 47205 states and 136035 transitions. [2022-03-01 15:58:53,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 15:58:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 47205 states and 136035 transitions. [2022-03-01 15:58:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:58:53,619 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:53,619 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:58:53,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:53,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:53,833 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1345204234, now seen corresponding path program 71 times [2022-03-01 15:58:53,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:53,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312689895] [2022-03-01 15:58:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:54,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:54,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312689895] [2022-03-01 15:58:54,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312689895] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:54,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950075808] [2022-03-01 15:58:54,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:58:54,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:54,002 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:58:54,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-01 15:58:54,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:58:54,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:54,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:58:54,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:54,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:54,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950075808] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:54,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:54,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-03-01 15:58:54,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503660143] [2022-03-01 15:58:54,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:54,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:58:54,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:58:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:58:54,809 INFO L87 Difference]: Start difference. First operand 47205 states and 136035 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:13,393 INFO L93 Difference]: Finished difference Result 49683 states and 142554 transitions. [2022-03-01 15:59:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-01 15:59:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:59:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:13,503 INFO L225 Difference]: With dead ends: 49683 [2022-03-01 15:59:13,503 INFO L226 Difference]: Without dead ends: 49575 [2022-03-01 15:59:13,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5610 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=1960, Invalid=14295, Unknown=1, NotChecked=0, Total=16256 [2022-03-01 15:59:13,505 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1113 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:13,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1113 Valid, 3126 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-01 15:59:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49575 states. [2022-03-01 15:59:14,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49575 to 47301. [2022-03-01 15:59:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47301 states, 47300 states have (on average 2.8823467230443973) internal successors, (136335), 47300 states have internal predecessors, (136335), 0 states have call successors, (0), 0 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 15:59:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47301 states to 47301 states and 136335 transitions. [2022-03-01 15:59:14,669 INFO L78 Accepts]: Start accepts. Automaton has 47301 states and 136335 transitions. Word has length 85 [2022-03-01 15:59:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:14,669 INFO L470 AbstractCegarLoop]: Abstraction has 47301 states and 136335 transitions. [2022-03-01 15:59:14,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 47301 states and 136335 transitions. [2022-03-01 15:59:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:59:14,738 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:14,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:59:14,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-01 15:59:14,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:14,945 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1578644024, now seen corresponding path program 72 times [2022-03-01 15:59:14,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:14,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342869208] [2022-03-01 15:59:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:14,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:15,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:15,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342869208] [2022-03-01 15:59:15,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342869208] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:15,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583528626] [2022-03-01 15:59:15,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:59:15,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:15,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:15,124 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:15,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-01 15:59:15,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:59:15,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:15,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:59:15,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:15,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583528626] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:15,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:15,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2022-03-01 15:59:15,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038830973] [2022-03-01 15:59:15,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:15,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 15:59:15,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 15:59:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-03-01 15:59:15,937 INFO L87 Difference]: Start difference. First operand 47301 states and 136335 transitions. Second operand has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:19,933 INFO L93 Difference]: Finished difference Result 48441 states and 139317 transitions. [2022-03-01 15:59:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:59:19,934 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:59:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:20,050 INFO L225 Difference]: With dead ends: 48441 [2022-03-01 15:59:20,054 INFO L226 Difference]: Without dead ends: 48321 [2022-03-01 15:59:20,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=809, Invalid=5197, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:59:20,055 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 620 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:20,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2885 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:59:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48321 states. [2022-03-01 15:59:20,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48321 to 47357. [2022-03-01 15:59:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47357 states, 47356 states have (on average 2.8817678858011657) internal successors, (136469), 47356 states have internal predecessors, (136469), 0 states have call successors, (0), 0 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 15:59:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47357 states to 47357 states and 136469 transitions. [2022-03-01 15:59:21,131 INFO L78 Accepts]: Start accepts. Automaton has 47357 states and 136469 transitions. Word has length 85 [2022-03-01 15:59:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:21,131 INFO L470 AbstractCegarLoop]: Abstraction has 47357 states and 136469 transitions. [2022-03-01 15:59:21,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 47357 states and 136469 transitions. [2022-03-01 15:59:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:59:21,369 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:21,370 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:59:21,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-03-01 15:59:21,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-03-01 15:59:21,606 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash 779253390, now seen corresponding path program 73 times [2022-03-01 15:59:21,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:21,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202322526] [2022-03-01 15:59:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:21,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:21,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:21,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202322526] [2022-03-01 15:59:21,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202322526] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:21,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174898715] [2022-03-01 15:59:21,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:59:21,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:21,800 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:21,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-01 15:59:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:21,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:59:21,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:22,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:22,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174898715] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:22,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:22,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-01 15:59:22,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386245910] [2022-03-01 15:59:22,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:22,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:59:22,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:22,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:59:22,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:59:22,461 INFO L87 Difference]: Start difference. First operand 47357 states and 136469 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:59:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:59:37,525 INFO L93 Difference]: Finished difference Result 58460 states and 167228 transitions. [2022-03-01 15:59:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-01 15:59:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 15:59:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:59:37,658 INFO L225 Difference]: With dead ends: 58460 [2022-03-01 15:59:37,658 INFO L226 Difference]: Without dead ends: 58388 [2022-03-01 15:59:37,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9118 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=3033, Invalid=21459, Unknown=0, NotChecked=0, Total=24492 [2022-03-01 15:59:37,659 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1369 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:59:37,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 3531 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 15:59:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58388 states. [2022-03-01 15:59:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58388 to 50273. [2022-03-01 15:59:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50273 states, 50272 states have (on average 2.88375238701464) internal successors, (144972), 50272 states have internal predecessors, (144972), 0 states have call successors, (0), 0 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 15:59:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50273 states to 50273 states and 144972 transitions. [2022-03-01 15:59:38,993 INFO L78 Accepts]: Start accepts. Automaton has 50273 states and 144972 transitions. Word has length 85 [2022-03-01 15:59:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:59:38,994 INFO L470 AbstractCegarLoop]: Abstraction has 50273 states and 144972 transitions. [2022-03-01 15:59:38,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:59:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 50273 states and 144972 transitions. [2022-03-01 15:59:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 15:59:39,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:59:39,084 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:59:39,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-01 15:59:39,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:39,299 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:59:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:59:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash 799970776, now seen corresponding path program 74 times [2022-03-01 15:59:39,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:59:39,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228735119] [2022-03-01 15:59:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:59:39,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:59:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:59:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:39,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:59:39,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228735119] [2022-03-01 15:59:39,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228735119] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:59:39,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010322689] [2022-03-01 15:59:39,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:59:39,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:59:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:59:39,745 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:59:39,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-01 15:59:39,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:59:39,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:59:39,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 15:59:39,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:59:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:40,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:40,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010322689] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:40,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:40,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 15:59:40,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841261280] [2022-03-01 15:59:40,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:40,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:59:40,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:59:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:59:40,460 INFO L87 Difference]: Start difference. First operand 50273 states and 144972 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:00:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:04,875 INFO L93 Difference]: Finished difference Result 61927 states and 176814 transitions. [2022-03-01 16:00:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-03-01 16:00:04,876 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 16:00:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:05,037 INFO L225 Difference]: With dead ends: 61927 [2022-03-01 16:00:05,037 INFO L226 Difference]: Without dead ends: 61837 [2022-03-01 16:00:05,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15849 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=4900, Invalid=35300, Unknown=0, NotChecked=0, Total=40200 [2022-03-01 16:00:05,040 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1780 mSDsluCounter, 4664 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:05,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 4526 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:00:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61837 states. [2022-03-01 16:00:06,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61837 to 50501. [2022-03-01 16:00:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50501 states, 50500 states have (on average 2.8834653465346536) internal successors, (145615), 50500 states have internal predecessors, (145615), 0 states have call successors, (0), 0 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 16:00:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50501 states to 50501 states and 145615 transitions. [2022-03-01 16:00:06,396 INFO L78 Accepts]: Start accepts. Automaton has 50501 states and 145615 transitions. Word has length 85 [2022-03-01 16:00:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:06,396 INFO L470 AbstractCegarLoop]: Abstraction has 50501 states and 145615 transitions. [2022-03-01 16:00:06,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:00:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 50501 states and 145615 transitions. [2022-03-01 16:00:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 16:00:06,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:06,491 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 16:00:06,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-01 16:00:06,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:06,700 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash 401741818, now seen corresponding path program 75 times [2022-03-01 16:00:06,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:06,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536839966] [2022-03-01 16:00:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:06,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:07,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:07,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536839966] [2022-03-01 16:00:07,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536839966] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:07,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203138833] [2022-03-01 16:00:07,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:00:07,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:07,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:07,104 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:07,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-01 16:00:07,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 16:00:07,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:07,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 16:00:07,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:07,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:07,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203138833] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:07,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:07,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 16:00:07,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929576914] [2022-03-01 16:00:07,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:07,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:00:07,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:00:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:00:07,749 INFO L87 Difference]: Start difference. First operand 50501 states and 145615 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:00:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:29,037 INFO L93 Difference]: Finished difference Result 64620 states and 185060 transitions. [2022-03-01 16:00:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-03-01 16:00:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 16:00:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:29,212 INFO L225 Difference]: With dead ends: 64620 [2022-03-01 16:00:29,212 INFO L226 Difference]: Without dead ends: 64515 [2022-03-01 16:00:29,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30396 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=7074, Invalid=66096, Unknown=0, NotChecked=0, Total=73170 [2022-03-01 16:00:29,217 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1837 mSDsluCounter, 3974 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:29,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 3881 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-01 16:00:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64515 states. [2022-03-01 16:00:30,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64515 to 53397. [2022-03-01 16:00:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53397 states, 53396 states have (on average 2.8872387444752414) internal successors, (154167), 53396 states have internal predecessors, (154167), 0 states have call successors, (0), 0 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 16:00:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53397 states to 53397 states and 154167 transitions. [2022-03-01 16:00:30,829 INFO L78 Accepts]: Start accepts. Automaton has 53397 states and 154167 transitions. Word has length 85 [2022-03-01 16:00:30,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:00:30,830 INFO L470 AbstractCegarLoop]: Abstraction has 53397 states and 154167 transitions. [2022-03-01 16:00:30,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:00:30,830 INFO L276 IsEmpty]: Start isEmpty. Operand 53397 states and 154167 transitions. [2022-03-01 16:00:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 16:00:30,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:00:30,957 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 16:00:30,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:31,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-03-01 16:00:31,172 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:00:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:00:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash 951304790, now seen corresponding path program 76 times [2022-03-01 16:00:31,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:00:31,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162416598] [2022-03-01 16:00:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:00:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:00:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:00:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:31,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:00:31,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162416598] [2022-03-01 16:00:31,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162416598] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:00:31,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750200638] [2022-03-01 16:00:31,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:00:31,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:00:31,358 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:00:31,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-01 16:00:31,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:00:31,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:00:31,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 16:00:31,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:00:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:32,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:00:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:00:32,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750200638] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:00:32,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:00:32,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 16:00:32,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909668661] [2022-03-01 16:00:32,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:00:32,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:00:32,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:00:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:00:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:00:32,429 INFO L87 Difference]: Start difference. First operand 53397 states and 154167 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:00:59,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:00:59,059 INFO L93 Difference]: Finished difference Result 81855 states and 234593 transitions. [2022-03-01 16:00:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-03-01 16:00:59,059 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 16:00:59,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:00:59,278 INFO L225 Difference]: With dead ends: 81855 [2022-03-01 16:00:59,278 INFO L226 Difference]: Without dead ends: 81225 [2022-03-01 16:00:59,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49445 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=10013, Invalid=104569, Unknown=0, NotChecked=0, Total=114582 [2022-03-01 16:00:59,284 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2143 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 3659 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 5999 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:59,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2143 Valid, 5999 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 3659 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-01 16:00:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81225 states. [2022-03-01 16:01:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81225 to 59411. [2022-03-01 16:01:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59411 states, 59410 states have (on average 2.8921057061100823) internal successors, (171820), 59410 states have internal predecessors, (171820), 0 states have call successors, (0), 0 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 16:01:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59411 states to 59411 states and 171820 transitions. [2022-03-01 16:01:01,235 INFO L78 Accepts]: Start accepts. Automaton has 59411 states and 171820 transitions. Word has length 85 [2022-03-01 16:01:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:01:01,235 INFO L470 AbstractCegarLoop]: Abstraction has 59411 states and 171820 transitions. [2022-03-01 16:01:01,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:01:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 59411 states and 171820 transitions. [2022-03-01 16:01:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 16:01:01,587 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:01:01,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 16:01:01,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-01 16:01:01,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-03-01 16:01:01,791 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:01:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:01:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1304018864, now seen corresponding path program 77 times [2022-03-01 16:01:01,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:01:01,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002714860] [2022-03-01 16:01:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:01:01,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:01:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:01,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:01:01,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002714860] [2022-03-01 16:01:01,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002714860] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:01:01,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102757308] [2022-03-01 16:01:01,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:01:01,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:01,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:01:01,936 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:01:01,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-01 16:01:02,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:01:02,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:01:02,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 16:01:02,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:01:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:02,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:01:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:02,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102757308] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:01:02,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:01:02,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-03-01 16:01:02,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481283603] [2022-03-01 16:01:02,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:01:02,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-01 16:01:02,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:01:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-01 16:01:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-03-01 16:01:02,779 INFO L87 Difference]: Start difference. First operand 59411 states and 171820 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 16:01:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:01:18,482 INFO L93 Difference]: Finished difference Result 86380 states and 248788 transitions. [2022-03-01 16:01:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-03-01 16:01:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 16:01:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:01:18,708 INFO L225 Difference]: With dead ends: 86380 [2022-03-01 16:01:18,708 INFO L226 Difference]: Without dead ends: 85795 [2022-03-01 16:01:18,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19001 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=4885, Invalid=44177, Unknown=0, NotChecked=0, Total=49062 [2022-03-01 16:01:18,710 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1293 mSDsluCounter, 3994 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:01:18,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 3871 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-01 16:01:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85795 states. [2022-03-01 16:01:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85795 to 63661. [2022-03-01 16:01:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63661 states, 63660 states have (on average 2.886946277097078) internal successors, (183783), 63660 states have internal predecessors, (183783), 0 states have call successors, (0), 0 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 16:01:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63661 states to 63661 states and 183783 transitions. [2022-03-01 16:01:20,849 INFO L78 Accepts]: Start accepts. Automaton has 63661 states and 183783 transitions. Word has length 85 [2022-03-01 16:01:20,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:01:20,849 INFO L470 AbstractCegarLoop]: Abstraction has 63661 states and 183783 transitions. [2022-03-01 16:01:20,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 16:01:20,849 INFO L276 IsEmpty]: Start isEmpty. Operand 63661 states and 183783 transitions. [2022-03-01 16:01:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 16:01:20,965 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:01:20,965 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 16:01:20,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-01 16:01:21,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:21,180 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:01:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:01:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1322894808, now seen corresponding path program 78 times [2022-03-01 16:01:21,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:01:21,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288616594] [2022-03-01 16:01:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:01:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:01:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:21,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:01:21,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288616594] [2022-03-01 16:01:21,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288616594] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:01:21,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615857451] [2022-03-01 16:01:21,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:01:21,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:01:21,580 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:01:21,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-01 16:01:21,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:01:21,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:01:21,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 16:01:21,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:01:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:21,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:01:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:22,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615857451] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:01:22,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:01:22,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 16:01:22,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302538965] [2022-03-01 16:01:22,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:01:22,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:01:22,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:01:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:01:22,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:01:22,336 INFO L87 Difference]: Start difference. First operand 63661 states and 183783 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:01:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:01:48,351 INFO L93 Difference]: Finished difference Result 81549 states and 232722 transitions. [2022-03-01 16:01:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2022-03-01 16:01:48,352 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 16:01:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:01:48,571 INFO L225 Difference]: With dead ends: 81549 [2022-03-01 16:01:48,571 INFO L226 Difference]: Without dead ends: 81204 [2022-03-01 16:01:48,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38668 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=8931, Invalid=82575, Unknown=0, NotChecked=0, Total=91506 [2022-03-01 16:01:48,575 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 2046 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:01:48,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 3837 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 16:01:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81204 states. [2022-03-01 16:01:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81204 to 67437. [2022-03-01 16:01:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67437 states, 67436 states have (on average 2.887997508749036) internal successors, (194755), 67436 states have internal predecessors, (194755), 0 states have call successors, (0), 0 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 16:01:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67437 states to 67437 states and 194755 transitions. [2022-03-01 16:01:50,850 INFO L78 Accepts]: Start accepts. Automaton has 67437 states and 194755 transitions. Word has length 85 [2022-03-01 16:01:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:01:50,850 INFO L470 AbstractCegarLoop]: Abstraction has 67437 states and 194755 transitions. [2022-03-01 16:01:50,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:01:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 67437 states and 194755 transitions. [2022-03-01 16:01:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 16:01:50,972 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:01:50,972 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 16:01:50,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-01 16:01:51,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:51,178 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:01:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:01:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1872457780, now seen corresponding path program 79 times [2022-03-01 16:01:51,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:01:51,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870313643] [2022-03-01 16:01:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:01:51,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:01:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:51,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:01:51,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870313643] [2022-03-01 16:01:51,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870313643] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:01:51,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87079557] [2022-03-01 16:01:51,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:01:51,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:01:51,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:01:51,383 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:01:51,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-01 16:01:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:01:51,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 16:01:51,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:01:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:51,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:01:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:01:52,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87079557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:01:52,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:01:52,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 16:01:52,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577894257] [2022-03-01 16:01:52,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:01:52,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:01:52,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:01:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:01:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:01:52,199 INFO L87 Difference]: Start difference. First operand 67437 states and 194755 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:02:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:02:19,169 INFO L93 Difference]: Finished difference Result 92125 states and 263509 transitions. [2022-03-01 16:02:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2022-03-01 16:02:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 85 [2022-03-01 16:02:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:02:19,386 INFO L225 Difference]: With dead ends: 92125 [2022-03-01 16:02:19,386 INFO L226 Difference]: Without dead ends: 91465 [2022-03-01 16:02:19,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38142 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=9186, Invalid=81716, Unknown=0, NotChecked=0, Total=90902 [2022-03-01 16:02:19,389 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1966 mSDsluCounter, 4788 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:02:19,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1966 Valid, 4518 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 16:02:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91465 states. [2022-03-01 16:02:21,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91465 to 68045. [2022-03-01 16:02:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68045 states, 68044 states have (on average 2.8846481688319323) internal successors, (196283), 68044 states have internal predecessors, (196283), 0 states have call successors, (0), 0 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 16:02:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68045 states to 68045 states and 196283 transitions. [2022-03-01 16:02:21,404 INFO L78 Accepts]: Start accepts. Automaton has 68045 states and 196283 transitions. Word has length 85 [2022-03-01 16:02:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:02:21,404 INFO L470 AbstractCegarLoop]: Abstraction has 68045 states and 196283 transitions. [2022-03-01 16:02:21,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:02:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 68045 states and 196283 transitions. [2022-03-01 16:02:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 16:02:21,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:02:21,811 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 16:02:21,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-01 16:02:22,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-01 16:02:22,011 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:02:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:02:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -871372052, now seen corresponding path program 80 times [2022-03-01 16:02:22,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:02:22,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41080730] [2022-03-01 16:02:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:02:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:02:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:02:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:22,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:02:22,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41080730] [2022-03-01 16:02:22,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41080730] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:02:22,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715424813] [2022-03-01 16:02:22,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:02:22,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:02:22,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:02:22,175 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:02:22,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-01 16:02:22,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:02:22,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:02:22,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 16:02:22,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:02:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:22,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:02:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:02:23,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715424813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:02:23,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:02:23,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-03-01 16:02:23,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802292925] [2022-03-01 16:02:23,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:02:23,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:02:23,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:02:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:02:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:02:23,067 INFO L87 Difference]: Start difference. First operand 68045 states and 196283 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 16:03:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:03:05,685 INFO L93 Difference]: Finished difference Result 77721 states and 222828 transitions. [2022-03-01 16:03:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-03-01 16:03:05,685 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-03-01 16:03:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:03:05,980 INFO L225 Difference]: With dead ends: 77721 [2022-03-01 16:03:05,981 INFO L226 Difference]: Without dead ends: 77649 [2022-03-01 16:03:05,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14131 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=4455, Invalid=31835, Unknown=0, NotChecked=0, Total=36290 [2022-03-01 16:03:05,982 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1181 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:03:05,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 3649 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-03-01 16:03:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77649 states. [2022-03-01 16:03:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77649 to 69133. [2022-03-01 16:03:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69133 states, 69132 states have (on average 2.884264884568651) internal successors, (199395), 69132 states have internal predecessors, (199395), 0 states have call successors, (0), 0 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 16:03:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69133 states to 69133 states and 199395 transitions. [2022-03-01 16:03:08,133 INFO L78 Accepts]: Start accepts. Automaton has 69133 states and 199395 transitions. Word has length 85 [2022-03-01 16:03:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:03:08,133 INFO L470 AbstractCegarLoop]: Abstraction has 69133 states and 199395 transitions. [2022-03-01 16:03:08,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 16:03:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 69133 states and 199395 transitions. [2022-03-01 16:03:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-01 16:03:08,258 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:03:08,258 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 16:03:08,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-01 16:03:08,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:03:08,471 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:03:08,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:03:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash -850654666, now seen corresponding path program 81 times [2022-03-01 16:03:08,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:03:08,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636063581] [2022-03-01 16:03:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:03:08,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:03:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:03:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:03:08,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:03:08,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636063581] [2022-03-01 16:03:08,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636063581] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:03:08,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472290932] [2022-03-01 16:03:08,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:03:08,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:03:08,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:03:08,810 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:03:08,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-01 16:03:08,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 16:03:08,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:03:08,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 16:03:08,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:03:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:03:09,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:03:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:03:09,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472290932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:03:09,523 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:03:09,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-03-01 16:03:09,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661668648] [2022-03-01 16:03:09,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:03:09,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:03:09,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:03:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:03:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:03:09,524 INFO L87 Difference]: Start difference. First operand 69133 states and 199395 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 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 16:03:48,896 WARN L228 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 72 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:03:51,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:04:12,458 WARN L228 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 63 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-03-01 16:04:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2022-03-01 16:04:36,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23378 ImplicationChecksByTransitivity, 78.8s TimeCoverageRelationStatistics Valid=7100, Invalid=50260, Unknown=0, NotChecked=0, Total=57360 [2022-03-01 16:04:36,158 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1357 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 306 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:04:36,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 3849 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2145 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-03-01 16:04:36,159 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:04:36,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-01 16:04:36,180 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:04:36,180 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 16:04:36,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:04:36,360 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 225 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 240 known predicates. [2022-03-01 16:04:36,361 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:04:36,361 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:04:36,364 INFO L732 BasicCegarLoop]: Path program histogram: [81, 9, 1, 1] [2022-03-01 16:04:36,365 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:04:36,365 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:04:36,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:04:36 BasicIcfg [2022-03-01 16:04:36,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:04:36,367 INFO L158 Benchmark]: Toolchain (without parser) took 864176.94ms. Allocated memory was 175.1MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 123.0MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-03-01 16:04:36,367 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:04:36,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.45ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 122.8MB in the beginning and 186.2MB in the end (delta: -63.4MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. [2022-03-01 16:04:36,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.97ms. Allocated memory is still 210.8MB. Free memory was 186.2MB in the beginning and 184.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:04:36,368 INFO L158 Benchmark]: Boogie Preprocessor took 36.94ms. Allocated memory is still 210.8MB. Free memory was 184.6MB in the beginning and 183.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:04:36,368 INFO L158 Benchmark]: RCFGBuilder took 253.26ms. Allocated memory is still 210.8MB. Free memory was 183.5MB in the beginning and 170.5MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-01 16:04:36,368 INFO L158 Benchmark]: TraceAbstraction took 863643.52ms. Allocated memory was 210.8MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 170.1MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-03-01 16:04:36,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.45ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 122.8MB in the beginning and 186.2MB in the end (delta: -63.4MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.97ms. Allocated memory is still 210.8MB. Free memory was 186.2MB in the beginning and 184.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.94ms. Allocated memory is still 210.8MB. Free memory was 184.6MB in the beginning and 183.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 253.26ms. Allocated memory is still 210.8MB. Free memory was 183.5MB in the beginning and 170.5MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 863643.52ms. Allocated memory was 210.8MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 170.1MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.0GB. 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: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 225 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 240 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 225 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 240 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 225 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 240 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 863.5s, OverallIterations: 92, TraceHistogramMax: 3, PathProgramHistogramMax: 81, EmptinessCheckTime: 4.8s, AutomataDifference: 734.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 71408 SdHoareTripleChecker+Valid, 95.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71408 mSDsluCounter, 195392 SdHoareTripleChecker+Invalid, 87.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196230 mSDsCounter, 8608 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100793 IncrementalHoareTripleChecker+Invalid, 109402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8608 mSolverCounterUnsat, 14786 mSDtfsCounter, 100793 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21282 GetRequests, 11864 SyntacticMatches, 72 SemanticMatches, 9345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586236 ImplicationChecksByTransitivity, 633.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69133occurred in iteration=91, InterpolantAutomatonStates: 8462, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 50.0s AutomataMinimizationTime, 91 MinimizatonAttempts, 430504 StatesRemovedByMinimization, 90 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 46.8s InterpolantComputationTime, 13375 NumberOfCodeBlocks, 13258 NumberOfCodeBlocksAsserted, 270 NumberOfCheckSat, 19387 ConstructedInterpolants, 0 QuantifiedInterpolants, 76848 SizeOfPredicates, 745 NumberOfNonLiveVariables, 14051 ConjunctsInSsa, 1344 ConjunctsInUnsatCore, 253 InterpolantComputations, 12 PerfectInterpolantSequences, 1718/3277 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