/usr/bin/java -Xmx16000000000 -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/pthread/fib_bench_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 17:52:58,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 17:52:58,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 17:52:58,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 17:52:58,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 17:52:58,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 17:52:58,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 17:52:58,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 17:52:58,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 17:52:58,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 17:52:58,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 17:52:58,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 17:52:58,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 17:52:58,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 17:52:58,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 17:52:58,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 17:52:58,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 17:52:58,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 17:52:58,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 17:52:58,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 17:52:58,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 17:52:58,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 17:52:58,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 17:52:58,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 17:52:58,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 17:52:58,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 17:52:58,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 17:52:58,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 17:52:58,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 17:52:58,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 17:52:58,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 17:52:58,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 17:52:58,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 17:52:58,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 17:52:58,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 17:52:58,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 17:52:58,470 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 [2021-06-05 17:52:58,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 17:52:58,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 17:52:58,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 17:52:58,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 17:52:58,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 17:52:58,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 17:52:58,496 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 17:52:58,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 17:52:58,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 17:52:58,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 17:52:58,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 17:52:58,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 17:52:58,499 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 17:52:58,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 17:52:58,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 17:52:58,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 17:52:58,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 17:52:58,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 17:52:58,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 17:52:58,749 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 17:52:58,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-06-05 17:52:58,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34712be2b/3eb1f3ffc07d4d55adc97385eff34258/FLAG084d20df8 [2021-06-05 17:52:59,246 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 17:52:59,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-06-05 17:52:59,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34712be2b/3eb1f3ffc07d4d55adc97385eff34258/FLAG084d20df8 [2021-06-05 17:52:59,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34712be2b/3eb1f3ffc07d4d55adc97385eff34258 [2021-06-05 17:52:59,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 17:52:59,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 17:52:59,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 17:52:59,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 17:52:59,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 17:52:59,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab01117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59, skipping insertion in model container [2021-06-05 17:52:59,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 17:52:59,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 17:52:59,610 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[30286,30299] [2021-06-05 17:52:59,624 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[31038,31051] [2021-06-05 17:52:59,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 17:52:59,632 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 17:52:59,658 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[30286,30299] [2021-06-05 17:52:59,662 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i[31038,31051] [2021-06-05 17:52:59,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 17:52:59,708 INFO L208 MainTranslator]: Completed translation [2021-06-05 17:52:59,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59 WrapperNode [2021-06-05 17:52:59,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 17:52:59,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 17:52:59,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 17:52:59,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 17:52:59,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 17:52:59,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 17:52:59,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 17:52:59,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 17:52:59,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... [2021-06-05 17:52:59,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 17:52:59,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 17:52:59,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 17:52:59,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 17:52:59,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 17:52:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-05 17:52:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-05 17:52:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-05 17:52:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-05 17:52:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 17:52:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 17:52:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 17:52:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 17:52:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 17:52:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 17:52:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 17:52:59,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 17:52:59,830 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 17:53:00,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 17:53:00,149 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 17:53:00,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:53:00 BoogieIcfgContainer [2021-06-05 17:53:00,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 17:53:00,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 17:53:00,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 17:53:00,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 17:53:00,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 05:52:59" (1/3) ... [2021-06-05 17:53:00,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4427b855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:53:00, skipping insertion in model container [2021-06-05 17:53:00,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 05:52:59" (2/3) ... [2021-06-05 17:53:00,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4427b855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:53:00, skipping insertion in model container [2021-06-05 17:53:00,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:53:00" (3/3) ... [2021-06-05 17:53:00,156 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2021-06-05 17:53:00,162 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 17:53:00,162 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 17:53:00,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 17:53:00,163 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 17:53:00,188 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,188 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,188 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,188 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,189 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,189 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,189 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,189 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,191 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,191 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,191 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,191 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,192 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,192 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,192 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,193 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,193 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,193 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,194 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,194 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,194 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,194 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,194 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,194 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,194 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,195 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,198 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,198 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,198 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,198 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,198 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,198 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,198 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,199 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,199 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,199 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,200 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,201 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,201 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,201 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,201 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,201 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,210 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,211 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,211 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,211 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,211 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,211 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 17:53:00,212 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 17:53:00,226 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 17:53:00,244 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 17:53:00,244 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 17:53:00,244 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 17:53:00,244 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 17:53:00,244 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 17:53:00,244 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 17:53:00,245 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 17:53:00,245 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 17:53:00,251 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-06-05 17:53:00,329 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-05 17:53:00,345 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:00,345 INFO L554 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] [2021-06-05 17:53:00,346 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1746009969, now seen corresponding path program 1 times [2021-06-05 17:53:00,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:00,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391888594] [2021-06-05 17:53:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:00,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:00,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391888594] [2021-06-05 17:53:00,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391888594] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:53:00,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:53:00,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 17:53:00,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716750307] [2021-06-05 17:53:00,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 17:53:00,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:00,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 17:53:00,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 17:53:00,608 INFO L87 Difference]: Start difference. First operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 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 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:00,763 INFO L93 Difference]: Finished difference Result 3996 states and 11572 transitions. [2021-06-05 17:53:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 17:53:00,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-06-05 17:53:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:00,786 INFO L225 Difference]: With dead ends: 3996 [2021-06-05 17:53:00,786 INFO L226 Difference]: Without dead ends: 1425 [2021-06-05 17:53:00,787 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-05 17:53:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-06-05 17:53:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-06-05 17:53:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 2.7184986595174263) internal successors, (3042), 1119 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:00,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-06-05 17:53:00,874 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-06-05 17:53:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:00,875 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-06-05 17:53:00,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-06-05 17:53:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 17:53:00,880 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:00,880 INFO L554 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] [2021-06-05 17:53:00,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 17:53:00,881 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:00,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:00,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1710770003, now seen corresponding path program 1 times [2021-06-05 17:53:00,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:00,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138615769] [2021-06-05 17:53:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:00,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:00,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138615769] [2021-06-05 17:53:00,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138615769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:53:00,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:53:00,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 17:53:00,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419635904] [2021-06-05 17:53:00,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 17:53:00,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:00,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 17:53:00,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 17:53:00,998 INFO L87 Difference]: Start difference. First operand 1120 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:01,102 INFO L93 Difference]: Finished difference Result 2001 states and 5364 transitions. [2021-06-05 17:53:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 17:53:01,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-05 17:53:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:01,111 INFO L225 Difference]: With dead ends: 2001 [2021-06-05 17:53:01,111 INFO L226 Difference]: Without dead ends: 1670 [2021-06-05 17:53:01,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-06-05 17:53:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-06-05 17:53:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1304. [2021-06-05 17:53:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 2.7206446661550268) internal successors, (3545), 1303 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 3545 transitions. [2021-06-05 17:53:01,155 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 3545 transitions. Word has length 37 [2021-06-05 17:53:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:01,156 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 3545 transitions. [2021-06-05 17:53:01,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 3545 transitions. [2021-06-05 17:53:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 17:53:01,158 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:01,158 INFO L554 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] [2021-06-05 17:53:01,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 17:53:01,159 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:01,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1534224383, now seen corresponding path program 1 times [2021-06-05 17:53:01,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:01,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323261087] [2021-06-05 17:53:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:01,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:01,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323261087] [2021-06-05 17:53:01,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323261087] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:53:01,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:53:01,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 17:53:01,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139443264] [2021-06-05 17:53:01,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 17:53:01,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:01,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 17:53:01,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 17:53:01,278 INFO L87 Difference]: Start difference. First operand 1304 states and 3545 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:01,364 INFO L93 Difference]: Finished difference Result 2270 states and 6052 transitions. [2021-06-05 17:53:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 17:53:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-05 17:53:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:01,371 INFO L225 Difference]: With dead ends: 2270 [2021-06-05 17:53:01,371 INFO L226 Difference]: Without dead ends: 2003 [2021-06-05 17:53:01,371 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 17:53:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-06-05 17:53:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1514. [2021-06-05 17:53:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.701916721744878) internal successors, (4088), 1513 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-06-05 17:53:01,403 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-06-05 17:53:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:01,403 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-06-05 17:53:01,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-06-05 17:53:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 17:53:01,407 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:01,408 INFO L554 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] [2021-06-05 17:53:01,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 17:53:01,410 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:01,411 INFO L82 PathProgramCache]: Analyzing trace with hash -276543295, now seen corresponding path program 1 times [2021-06-05 17:53:01,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:01,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773899703] [2021-06-05 17:53:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:01,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:01,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773899703] [2021-06-05 17:53:01,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773899703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:53:01,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:53:01,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 17:53:01,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079613253] [2021-06-05 17:53:01,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 17:53:01,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:01,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 17:53:01,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 17:53:01,533 INFO L87 Difference]: Start difference. First operand 1514 states and 4088 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:01,656 INFO L93 Difference]: Finished difference Result 2443 states and 6548 transitions. [2021-06-05 17:53:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 17:53:01,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 17:53:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:01,664 INFO L225 Difference]: With dead ends: 2443 [2021-06-05 17:53:01,664 INFO L226 Difference]: Without dead ends: 2176 [2021-06-05 17:53:01,664 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 17:53:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-05 17:53:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1544. [2021-06-05 17:53:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 2.73298768632534) internal successors, (4217), 1543 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 4217 transitions. [2021-06-05 17:53:01,694 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 4217 transitions. Word has length 42 [2021-06-05 17:53:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:01,694 INFO L482 AbstractCegarLoop]: Abstraction has 1544 states and 4217 transitions. [2021-06-05 17:53:01,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 4217 transitions. [2021-06-05 17:53:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 17:53:01,696 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:01,696 INFO L554 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] [2021-06-05 17:53:01,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 17:53:01,696 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:01,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1621234243, now seen corresponding path program 2 times [2021-06-05 17:53:01,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:01,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528100453] [2021-06-05 17:53:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:01,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:01,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528100453] [2021-06-05 17:53:01,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528100453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:53:01,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:53:01,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 17:53:01,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416458331] [2021-06-05 17:53:01,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 17:53:01,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 17:53:01,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 17:53:01,777 INFO L87 Difference]: Start difference. First operand 1544 states and 4217 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:01,851 INFO L93 Difference]: Finished difference Result 2275 states and 6028 transitions. [2021-06-05 17:53:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 17:53:01,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 17:53:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:01,858 INFO L225 Difference]: With dead ends: 2275 [2021-06-05 17:53:01,859 INFO L226 Difference]: Without dead ends: 2123 [2021-06-05 17:53:01,859 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 17:53:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2021-06-05 17:53:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1569. [2021-06-05 17:53:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1568 states have (on average 2.7244897959183674) internal successors, (4272), 1568 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 4272 transitions. [2021-06-05 17:53:01,890 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 4272 transitions. Word has length 42 [2021-06-05 17:53:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:01,890 INFO L482 AbstractCegarLoop]: Abstraction has 1569 states and 4272 transitions. [2021-06-05 17:53:01,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4272 transitions. [2021-06-05 17:53:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 17:53:01,892 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:01,892 INFO L554 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] [2021-06-05 17:53:01,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 17:53:01,892 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:01,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:01,893 INFO L82 PathProgramCache]: Analyzing trace with hash 858791553, now seen corresponding path program 3 times [2021-06-05 17:53:01,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:01,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378244699] [2021-06-05 17:53:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:01,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:01,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378244699] [2021-06-05 17:53:01,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378244699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:53:01,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:53:01,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 17:53:01,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675650087] [2021-06-05 17:53:01,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 17:53:01,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:01,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 17:53:01,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 17:53:01,996 INFO L87 Difference]: Start difference. First operand 1569 states and 4272 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:02,121 INFO L93 Difference]: Finished difference Result 2904 states and 7740 transitions. [2021-06-05 17:53:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 17:53:02,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 17:53:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:02,130 INFO L225 Difference]: With dead ends: 2904 [2021-06-05 17:53:02,130 INFO L226 Difference]: Without dead ends: 2589 [2021-06-05 17:53:02,130 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:53:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-06-05 17:53:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 1746. [2021-06-05 17:53:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1745 states have (on average 2.7283667621776506) internal successors, (4761), 1745 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4761 transitions. [2021-06-05 17:53:02,174 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4761 transitions. Word has length 42 [2021-06-05 17:53:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:02,174 INFO L482 AbstractCegarLoop]: Abstraction has 1746 states and 4761 transitions. [2021-06-05 17:53:02,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4761 transitions. [2021-06-05 17:53:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 17:53:02,176 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:02,177 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:53:02,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 17:53:02,177 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:02,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:02,178 INFO L82 PathProgramCache]: Analyzing trace with hash -502364404, now seen corresponding path program 1 times [2021-06-05 17:53:02,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:02,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844746259] [2021-06-05 17:53:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:02,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:02,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844746259] [2021-06-05 17:53:02,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844746259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:02,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703057952] [2021-06-05 17:53:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:02,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 17:53:02,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:02,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703057952] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:02,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:02,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 17:53:02,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222332503] [2021-06-05 17:53:02,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 17:53:02,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:02,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 17:53:02,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 17:53:02,561 INFO L87 Difference]: Start difference. First operand 1746 states and 4761 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:02,729 INFO L93 Difference]: Finished difference Result 3320 states and 8844 transitions. [2021-06-05 17:53:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 17:53:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 17:53:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:02,738 INFO L225 Difference]: With dead ends: 3320 [2021-06-05 17:53:02,738 INFO L226 Difference]: Without dead ends: 2786 [2021-06-05 17:53:02,739 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 182.3ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 17:53:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-06-05 17:53:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2113. [2021-06-05 17:53:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7130681818181817) internal successors, (5730), 2112 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5730 transitions. [2021-06-05 17:53:02,779 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5730 transitions. Word has length 42 [2021-06-05 17:53:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:02,779 INFO L482 AbstractCegarLoop]: Abstraction has 2113 states and 5730 transitions. [2021-06-05 17:53:02,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5730 transitions. [2021-06-05 17:53:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 17:53:02,782 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:02,782 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:53:02,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 17:53:02,997 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash -232957222, now seen corresponding path program 1 times [2021-06-05 17:53:02,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:02,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245338537] [2021-06-05 17:53:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:03,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:03,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245338537] [2021-06-05 17:53:03,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245338537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:03,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146225160] [2021-06-05 17:53:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:03,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 17:53:03,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:03,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146225160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:03,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:03,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 17:53:03,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701447049] [2021-06-05 17:53:03,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:53:03,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:03,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:53:03,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:53:03,356 INFO L87 Difference]: Start difference. First operand 2113 states and 5730 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:03,661 INFO L93 Difference]: Finished difference Result 4087 states and 10892 transitions. [2021-06-05 17:53:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 17:53:03,662 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 17:53:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:03,673 INFO L225 Difference]: With dead ends: 4087 [2021-06-05 17:53:03,673 INFO L226 Difference]: Without dead ends: 3529 [2021-06-05 17:53:03,673 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 254.2ms TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2021-06-05 17:53:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-06-05 17:53:03,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2150. [2021-06-05 17:53:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 2.7240577012563985) internal successors, (5854), 2149 states have internal predecessors, (5854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 5854 transitions. [2021-06-05 17:53:03,716 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 5854 transitions. Word has length 47 [2021-06-05 17:53:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:03,717 INFO L482 AbstractCegarLoop]: Abstraction has 2150 states and 5854 transitions. [2021-06-05 17:53:03,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 5854 transitions. [2021-06-05 17:53:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 17:53:03,720 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:03,720 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:53:03,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 17:53:03,935 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2095463568, now seen corresponding path program 2 times [2021-06-05 17:53:03,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:03,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476409527] [2021-06-05 17:53:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:04,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:04,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476409527] [2021-06-05 17:53:04,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476409527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:04,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100974208] [2021-06-05 17:53:04,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:04,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 17:53:04,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:04,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 17:53:04,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:04,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100974208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:04,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:04,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 17:53:04,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239000386] [2021-06-05 17:53:04,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:53:04,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:04,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:53:04,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:53:04,241 INFO L87 Difference]: Start difference. First operand 2150 states and 5854 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:04,405 INFO L93 Difference]: Finished difference Result 3549 states and 9211 transitions. [2021-06-05 17:53:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 17:53:04,405 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 17:53:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:04,413 INFO L225 Difference]: With dead ends: 3549 [2021-06-05 17:53:04,414 INFO L226 Difference]: Without dead ends: 3157 [2021-06-05 17:53:04,414 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 163.1ms TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-06-05 17:53:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-06-05 17:53:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2260. [2021-06-05 17:53:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 2259 states have (on average 2.691013722886233) internal successors, (6079), 2259 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:04,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 6079 transitions. [2021-06-05 17:53:04,475 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 6079 transitions. Word has length 47 [2021-06-05 17:53:04,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:04,475 INFO L482 AbstractCegarLoop]: Abstraction has 2260 states and 6079 transitions. [2021-06-05 17:53:04,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 6079 transitions. [2021-06-05 17:53:04,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 17:53:04,478 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:04,478 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:53:04,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 17:53:04,693 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:04,693 INFO L82 PathProgramCache]: Analyzing trace with hash -757470784, now seen corresponding path program 3 times [2021-06-05 17:53:04,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:04,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997669322] [2021-06-05 17:53:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:04,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:04,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997669322] [2021-06-05 17:53:04,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997669322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:04,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359999278] [2021-06-05 17:53:04,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:04,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 17:53:04,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:04,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 17:53:04,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:04,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359999278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:04,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:04,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 17:53:04,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347016030] [2021-06-05 17:53:04,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:53:04,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:53:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:53:04,952 INFO L87 Difference]: Start difference. First operand 2260 states and 6079 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:05,165 INFO L93 Difference]: Finished difference Result 4390 states and 11364 transitions. [2021-06-05 17:53:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 17:53:05,166 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 17:53:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:05,172 INFO L225 Difference]: With dead ends: 4390 [2021-06-05 17:53:05,172 INFO L226 Difference]: Without dead ends: 3998 [2021-06-05 17:53:05,172 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 186.0ms TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-06-05 17:53:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-05 17:53:05,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 2423. [2021-06-05 17:53:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 2.7345169281585466) internal successors, (6623), 2422 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6623 transitions. [2021-06-05 17:53:05,219 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6623 transitions. Word has length 47 [2021-06-05 17:53:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:05,220 INFO L482 AbstractCegarLoop]: Abstraction has 2423 states and 6623 transitions. [2021-06-05 17:53:05,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6623 transitions. [2021-06-05 17:53:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 17:53:05,223 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:05,223 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:53:05,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:05,441 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:05,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1589464196, now seen corresponding path program 4 times [2021-06-05 17:53:05,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:05,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919393520] [2021-06-05 17:53:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:05,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:05,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919393520] [2021-06-05 17:53:05,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919393520] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:05,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565194986] [2021-06-05 17:53:05,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:05,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 17:53:05,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:05,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 17:53:05,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:05,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565194986] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:05,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:05,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 17:53:05,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010380931] [2021-06-05 17:53:05,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:53:05,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:05,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:53:05,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:53:05,725 INFO L87 Difference]: Start difference. First operand 2423 states and 6623 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:06,195 INFO L93 Difference]: Finished difference Result 5771 states and 15228 transitions. [2021-06-05 17:53:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:53:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 17:53:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:06,204 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 17:53:06,204 INFO L226 Difference]: Without dead ends: 4898 [2021-06-05 17:53:06,205 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 393.9ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:53:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-06-05 17:53:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2817. [2021-06-05 17:53:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2816 states have (on average 2.7169744318181817) internal successors, (7651), 2816 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-06-05 17:53:06,259 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-06-05 17:53:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:06,260 INFO L482 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-06-05 17:53:06,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-06-05 17:53:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 17:53:06,263 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:06,263 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-06-05 17:53:06,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:06,473 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash 436541687, now seen corresponding path program 5 times [2021-06-05 17:53:06,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:06,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14520780] [2021-06-05 17:53:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:06,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:06,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14520780] [2021-06-05 17:53:06,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14520780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:06,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858944616] [2021-06-05 17:53:06,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:06,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 17:53:06,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:06,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 17:53:06,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:06,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858944616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:06,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:06,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 17:53:06,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440326868] [2021-06-05 17:53:06,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:53:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:06,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:53:06,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:53:06,753 INFO L87 Difference]: Start difference. First operand 2817 states and 7651 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:06,973 INFO L93 Difference]: Finished difference Result 4116 states and 10667 transitions. [2021-06-05 17:53:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 17:53:06,973 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 17:53:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:06,980 INFO L225 Difference]: With dead ends: 4116 [2021-06-05 17:53:06,980 INFO L226 Difference]: Without dead ends: 3964 [2021-06-05 17:53:06,980 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 206.8ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-06-05 17:53:06,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2021-06-05 17:53:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 2842. [2021-06-05 17:53:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2841 states have (on average 2.7124252023935234) internal successors, (7706), 2841 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 7706 transitions. [2021-06-05 17:53:07,058 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 7706 transitions. Word has length 52 [2021-06-05 17:53:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:07,058 INFO L482 AbstractCegarLoop]: Abstraction has 2842 states and 7706 transitions. [2021-06-05 17:53:07,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 7706 transitions. [2021-06-05 17:53:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 17:53:07,062 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:07,062 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-06-05 17:53:07,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:07,281 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:07,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1774534471, now seen corresponding path program 6 times [2021-06-05 17:53:07,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:07,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939048454] [2021-06-05 17:53:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:07,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:07,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939048454] [2021-06-05 17:53:07,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939048454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:07,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856639116] [2021-06-05 17:53:07,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:07,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 17:53:07,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 17:53:07,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:07,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856639116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:07,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:07,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 17:53:07,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127658999] [2021-06-05 17:53:07,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:53:07,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:07,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:53:07,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:53:07,556 INFO L87 Difference]: Start difference. First operand 2842 states and 7706 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:07,830 INFO L93 Difference]: Finished difference Result 4933 states and 12980 transitions. [2021-06-05 17:53:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 17:53:07,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 17:53:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:07,837 INFO L225 Difference]: With dead ends: 4933 [2021-06-05 17:53:07,837 INFO L226 Difference]: Without dead ends: 4629 [2021-06-05 17:53:07,838 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 254.6ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-06-05 17:53:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-06-05 17:53:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 3037. [2021-06-05 17:53:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 2.745718050065876) internal successors, (8336), 3036 states have internal predecessors, (8336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 8336 transitions. [2021-06-05 17:53:07,891 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 8336 transitions. Word has length 52 [2021-06-05 17:53:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:07,892 INFO L482 AbstractCegarLoop]: Abstraction has 3037 states and 8336 transitions. [2021-06-05 17:53:07,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 8336 transitions. [2021-06-05 17:53:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 17:53:07,895 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:07,895 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-06-05 17:53:08,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:08,114 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:08,115 INFO L82 PathProgramCache]: Analyzing trace with hash -173497845, now seen corresponding path program 7 times [2021-06-05 17:53:08,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:08,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583795] [2021-06-05 17:53:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:08,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:08,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583795] [2021-06-05 17:53:08,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:08,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168581371] [2021-06-05 17:53:08,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:08,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 17:53:08,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:08,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168581371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:08,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:08,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 17:53:08,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721873011] [2021-06-05 17:53:08,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:53:08,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:08,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:53:08,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:53:08,363 INFO L87 Difference]: Start difference. First operand 3037 states and 8336 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:08,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:08,882 INFO L93 Difference]: Finished difference Result 6026 states and 16276 transitions. [2021-06-05 17:53:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:53:08,882 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 17:53:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:08,890 INFO L225 Difference]: With dead ends: 6026 [2021-06-05 17:53:08,891 INFO L226 Difference]: Without dead ends: 5350 [2021-06-05 17:53:08,891 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 437.6ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:53:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2021-06-05 17:53:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 3186. [2021-06-05 17:53:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 2.778335949764521) internal successors, (8849), 3185 states have internal predecessors, (8849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 8849 transitions. [2021-06-05 17:53:08,948 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 8849 transitions. Word has length 52 [2021-06-05 17:53:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:08,948 INFO L482 AbstractCegarLoop]: Abstraction has 3186 states and 8849 transitions. [2021-06-05 17:53:08,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 8849 transitions. [2021-06-05 17:53:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 17:53:08,952 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:08,952 INFO L554 BasicCegarLoop]: trace histogram [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] [2021-06-05 17:53:09,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 17:53:09,165 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash 595336299, now seen corresponding path program 1 times [2021-06-05 17:53:09,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:09,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930221528] [2021-06-05 17:53:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:09,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:09,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930221528] [2021-06-05 17:53:09,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930221528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:09,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698605509] [2021-06-05 17:53:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:09,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 17:53:09,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:09,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698605509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:09,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:09,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 17:53:09,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136597483] [2021-06-05 17:53:09,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:53:09,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:09,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:53:09,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:53:09,406 INFO L87 Difference]: Start difference. First operand 3186 states and 8849 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:09,594 INFO L93 Difference]: Finished difference Result 4617 states and 12244 transitions. [2021-06-05 17:53:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 17:53:09,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 17:53:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:09,614 INFO L225 Difference]: With dead ends: 4617 [2021-06-05 17:53:09,615 INFO L226 Difference]: Without dead ends: 4465 [2021-06-05 17:53:09,616 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 188.6ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-06-05 17:53:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2021-06-05 17:53:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 3236. [2021-06-05 17:53:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 2.7693972179289026) internal successors, (8959), 3235 states have internal predecessors, (8959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 8959 transitions. [2021-06-05 17:53:09,663 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 8959 transitions. Word has length 52 [2021-06-05 17:53:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:09,663 INFO L482 AbstractCegarLoop]: Abstraction has 3236 states and 8959 transitions. [2021-06-05 17:53:09,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 8959 transitions. [2021-06-05 17:53:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 17:53:09,667 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:09,667 INFO L554 BasicCegarLoop]: trace histogram [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] [2021-06-05 17:53:09,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-05 17:53:09,888 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:09,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1068664517, now seen corresponding path program 2 times [2021-06-05 17:53:09,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:09,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950088162] [2021-06-05 17:53:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:09,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:09,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950088162] [2021-06-05 17:53:09,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950088162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:09,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056552827] [2021-06-05 17:53:09,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:09,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 17:53:09,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:09,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 17:53:10,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:10,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056552827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:10,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:10,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 17:53:10,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712328859] [2021-06-05 17:53:10,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:53:10,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:10,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:53:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:53:10,129 INFO L87 Difference]: Start difference. First operand 3236 states and 8959 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:10,313 INFO L93 Difference]: Finished difference Result 4457 states and 11924 transitions. [2021-06-05 17:53:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 17:53:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 17:53:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:10,319 INFO L225 Difference]: With dead ends: 4457 [2021-06-05 17:53:10,319 INFO L226 Difference]: Without dead ends: 4305 [2021-06-05 17:53:10,319 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 188.2ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-06-05 17:53:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2021-06-05 17:53:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 3235. [2021-06-05 17:53:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 2.7680890538033394) internal successors, (8952), 3234 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 8952 transitions. [2021-06-05 17:53:10,366 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 8952 transitions. Word has length 52 [2021-06-05 17:53:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:10,366 INFO L482 AbstractCegarLoop]: Abstraction has 3235 states and 8952 transitions. [2021-06-05 17:53:10,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 8952 transitions. [2021-06-05 17:53:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 17:53:10,370 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:10,370 INFO L554 BasicCegarLoop]: trace histogram [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] [2021-06-05 17:53:10,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-05 17:53:10,587 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:10,587 INFO L82 PathProgramCache]: Analyzing trace with hash 515469461, now seen corresponding path program 3 times [2021-06-05 17:53:10,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:10,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009849148] [2021-06-05 17:53:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:10,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:10,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009849148] [2021-06-05 17:53:10,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009849148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:10,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090830037] [2021-06-05 17:53:10,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:10,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 17:53:10,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:10,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 17:53:10,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:10,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090830037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:10,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:10,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 17:53:10,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782618788] [2021-06-05 17:53:10,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:53:10,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:10,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:53:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:53:10,820 INFO L87 Difference]: Start difference. First operand 3235 states and 8952 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:11,126 INFO L93 Difference]: Finished difference Result 5327 states and 14287 transitions. [2021-06-05 17:53:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 17:53:11,126 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 17:53:11,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:11,131 INFO L225 Difference]: With dead ends: 5327 [2021-06-05 17:53:11,132 INFO L226 Difference]: Without dead ends: 5175 [2021-06-05 17:53:11,132 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 278.6ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-06-05 17:53:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2021-06-05 17:53:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 3363. [2021-06-05 17:53:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.796252230814991) internal successors, (9401), 3362 states have internal predecessors, (9401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 9401 transitions. [2021-06-05 17:53:11,187 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 9401 transitions. Word has length 52 [2021-06-05 17:53:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:11,187 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 9401 transitions. [2021-06-05 17:53:11,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 9401 transitions. [2021-06-05 17:53:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 17:53:11,192 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:11,193 INFO L554 BasicCegarLoop]: trace histogram [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] [2021-06-05 17:53:11,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-05 17:53:11,411 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1432562855, now seen corresponding path program 4 times [2021-06-05 17:53:11,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:11,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136756530] [2021-06-05 17:53:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:11,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:11,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136756530] [2021-06-05 17:53:11,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136756530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:11,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888729606] [2021-06-05 17:53:11,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:11,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 17:53:11,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:11,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 17:53:11,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:11,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888729606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:11,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:11,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 17:53:11,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429251762] [2021-06-05 17:53:11,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:53:11,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:11,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:53:11,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:53:11,638 INFO L87 Difference]: Start difference. First operand 3363 states and 9401 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:12,113 INFO L93 Difference]: Finished difference Result 6683 states and 18179 transitions. [2021-06-05 17:53:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:53:12,113 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 17:53:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:12,120 INFO L225 Difference]: With dead ends: 6683 [2021-06-05 17:53:12,120 INFO L226 Difference]: Without dead ends: 6253 [2021-06-05 17:53:12,121 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 419.9ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:53:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2021-06-05 17:53:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3417. [2021-06-05 17:53:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:12,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-06-05 17:53:12,212 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 52 [2021-06-05 17:53:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:12,213 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-06-05 17:53:12,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:12,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-06-05 17:53:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 17:53:12,218 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:12,218 INFO L554 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:53:12,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 17:53:12,429 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:12,429 INFO L82 PathProgramCache]: Analyzing trace with hash -261717828, now seen corresponding path program 8 times [2021-06-05 17:53:12,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:12,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341457248] [2021-06-05 17:53:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:12,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:12,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341457248] [2021-06-05 17:53:12,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341457248] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:12,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642969961] [2021-06-05 17:53:12,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:12,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 17:53:12,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:12,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 17:53:12,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 17:53:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:12,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642969961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:12,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 17:53:12,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 17:53:12,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038541632] [2021-06-05 17:53:12,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 17:53:12,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:53:12,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 17:53:12,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-06-05 17:53:12,707 INFO L87 Difference]: Start difference. First operand 3417 states and 9458 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) [2021-06-05 17:53:12,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:53:12,915 INFO L93 Difference]: Finished difference Result 4904 states and 12966 transitions. [2021-06-05 17:53:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 17:53:12,915 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 57 [2021-06-05 17:53:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:53:12,920 INFO L225 Difference]: With dead ends: 4904 [2021-06-05 17:53:12,920 INFO L226 Difference]: Without dead ends: 4752 [2021-06-05 17:53:12,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 215.9ms TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2021-06-05 17:53:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-06-05 17:53:12,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 3417. [2021-06-05 17:53:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:53:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-06-05 17:53:12,969 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 57 [2021-06-05 17:53:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:53:12,970 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-06-05 17:53:12,970 INFO L483 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) [2021-06-05 17:53:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-06-05 17:53:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 17:53:12,973 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 17:53:12,973 INFO L554 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:53:13,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:13,190 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 17:53:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:53:13,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1024160518, now seen corresponding path program 9 times [2021-06-05 17:53:13,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:53:13,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497346217] [2021-06-05 17:53:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:53:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:53:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:53:13,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:53:13,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497346217] [2021-06-05 17:53:13,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497346217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 17:53:13,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574034887] [2021-06-05 17:53:13,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 17:53:13,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 17:53:13,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 17:53:13,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 17:53:13,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-06-05 18:07:43,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 18:07:43,487 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 18:07:43,489 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 18:07:43,490 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 18:07:43,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:07:43 BasicIcfg [2021-06-05 18:07:43,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 18:07:43,491 INFO L168 Benchmark]: Toolchain (without parser) took 884206.10 ms. Allocated memory was 362.8 MB in the beginning and 1.3 GB in the end (delta: 971.0 MB). Free memory was 325.5 MB in the beginning and 1.1 GB in the end (delta: -727.1 MB). Peak memory consumption was 829.5 MB. Max. memory is 16.0 GB. [2021-06-05 18:07:43,491 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 362.8 MB. Free memory was 343.5 MB in the beginning and 343.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:07:43,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.18 ms. Allocated memory is still 362.8 MB. Free memory was 325.2 MB in the beginning and 325.6 MB in the end (delta: -316.0 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-05 18:07:43,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.09 ms. Allocated memory is still 362.8 MB. Free memory was 325.6 MB in the beginning and 323.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 18:07:43,491 INFO L168 Benchmark]: Boogie Preprocessor took 23.10 ms. Allocated memory is still 362.8 MB. Free memory was 323.5 MB in the beginning and 322.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:07:43,491 INFO L168 Benchmark]: RCFGBuilder took 376.83 ms. Allocated memory is still 362.8 MB. Free memory was 322.4 MB in the beginning and 298.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 18:07:43,491 INFO L168 Benchmark]: TraceAbstraction took 883338.56 ms. Allocated memory was 362.8 MB in the beginning and 1.3 GB in the end (delta: 971.0 MB). Free memory was 298.3 MB in the beginning and 1.1 GB in the end (delta: -754.3 MB). Peak memory consumption was 801.3 MB. Max. memory is 16.0 GB. [2021-06-05 18:07:43,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 362.8 MB. Free memory was 343.5 MB in the beginning and 343.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 421.18 ms. Allocated memory is still 362.8 MB. Free memory was 325.2 MB in the beginning and 325.6 MB in the end (delta: -316.0 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.09 ms. Allocated memory is still 362.8 MB. Free memory was 325.6 MB in the beginning and 323.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.10 ms. Allocated memory is still 362.8 MB. Free memory was 323.5 MB in the beginning and 322.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 376.83 ms. Allocated memory is still 362.8 MB. Free memory was 322.4 MB in the beginning and 298.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 883338.56 ms. Allocated memory was 362.8 MB in the beginning and 1.3 GB in the end (delta: 971.0 MB). Free memory was 298.3 MB in the beginning and 1.1 GB in the end (delta: -754.3 MB). Peak memory consumption was 801.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 58 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 883245.3ms, OverallIterations: 20, TraceHistogramMax: 4, EmptinessCheckTime: 75.4ms, AutomataDifference: 4566.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1802 SDtfs, 8638 SDslu, 12532 SDs, 0 SdLazy, 2116 SolverSat, 507 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1041.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1034 GetRequests, 593 SyntacticMatches, 4 SemanticMatches, 437 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 3823.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3417occurred in iteration=18, InterpolantAutomatonStates: 392, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 976.8ms AutomataMinimizationTime, 19 MinimizatonAttempts, 22954 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 149.7ms SsaConstructionTime, 337.6ms SatisfiabilityAnalysisTime, 3281.2ms InterpolantComputationTime, 1534 NumberOfCodeBlocks, 1534 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 1502 ConstructedInterpolants, 0 QuantifiedInterpolants, 9987 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1673 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 32 InterpolantComputations, 6 PerfectInterpolantSequences, 0/148 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