/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:55:15,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:55:15,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:55:15,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:55:15,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 23:55:15,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 23:55:15,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 23:55:15,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 23:55:15,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 23:55:15,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 23:55:15,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 23:55:15,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 23:55:15,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 23:55:15,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 23:55:15,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 23:55:15,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 23:55:15,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 23:55:15,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:55:15,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:55:15,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:55:15,600 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-Separate.epf [2021-05-21 23:55:15,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:55:15,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:55:15,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:55:15,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:55:15,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:55:15,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:55:15,615 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:55:15,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:55:15,616 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:55:15,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:55:15,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:55:15,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:55:15,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:55:15,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:55:15,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:55:15,618 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:55:15,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:55:15,618 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:55:15,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:55:15,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:55:15,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:55:15,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:55:15,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:55:15,845 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:55:15,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-05-21 23:55:15,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa726811b/f6fe2fad5e5b4113af8c3969b7d9c5f4/FLAGb80703d93 [2021-05-21 23:55:16,323 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:55:16,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-05-21 23:55:16,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa726811b/f6fe2fad5e5b4113af8c3969b7d9c5f4/FLAGb80703d93 [2021-05-21 23:55:16,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa726811b/f6fe2fad5e5b4113af8c3969b7d9c5f4 [2021-05-21 23:55:16,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:55:16,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:55:16,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:55:16,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:55:16,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:55:16,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ec382e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16, skipping insertion in model container [2021-05-21 23:55:16,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:55:16,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:55:16,510 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-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-05-21 23:55:16,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:55:16,701 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:55:16,708 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-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-05-21 23:55:16,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:55:16,875 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:55:16,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16 WrapperNode [2021-05-21 23:55:16,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:55:16,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:55:16,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:55:16,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:55:16,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:55:16,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:55:16,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:55:16,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:55:16,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (1/1) ... [2021-05-21 23:55:16,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:55:16,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:55:16,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:55:16,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:55:16,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (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 [2021-05-21 23:55:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:55:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:55:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-21 23:55:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2021-05-21 23:55:17,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2021-05-21 23:55:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:55:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:55:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:55:17,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:55:17,027 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 23:55:17,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:55:17,379 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:55:17,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:55:17 BoogieIcfgContainer [2021-05-21 23:55:17,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:55:17,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:55:17,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:55:17,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:55:17,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:55:16" (1/3) ... [2021-05-21 23:55:17,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d57d820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:55:17, skipping insertion in model container [2021-05-21 23:55:17,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:55:16" (2/3) ... [2021-05-21 23:55:17,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d57d820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:55:17, skipping insertion in model container [2021-05-21 23:55:17,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:55:17" (3/3) ... [2021-05-21 23:55:17,385 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2021-05-21 23:55:17,389 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:55:17,389 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:55:17,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:55:17,390 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:55:17,419 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,420 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,420 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,420 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,420 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,420 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,420 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,420 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,421 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,422 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,423 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,424 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,424 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,424 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,424 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,424 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,424 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,424 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,425 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,425 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,425 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,425 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,425 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,425 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,426 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,426 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,426 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,427 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,427 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,427 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,428 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,428 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,428 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,428 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,428 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:55:17,434 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-05-21 23:55:17,448 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:55:17,460 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:55:17,460 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:55:17,460 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:55:17,460 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:55:17,460 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:55:17,460 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:55:17,460 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:55:17,460 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:55:17,466 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 94 transitions, 196 flow [2021-05-21 23:55:17,487 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:55:17,501 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:17,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:17,502 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:17,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1922949937, now seen corresponding path program 1 times [2021-05-21 23:55:17,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:17,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354532274] [2021-05-21 23:55:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:55:17,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:17,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354532274] [2021-05-21 23:55:17,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354532274] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:55:17,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:55:17,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 23:55:17,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344391694] [2021-05-21 23:55:17,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-21 23:55:17,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:17,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-21 23:55:17,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-21 23:55:17,713 INFO L87 Difference]: Start difference. First operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:17,728 INFO L93 Difference]: Finished difference Result 345 states and 645 transitions. [2021-05-21 23:55:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-21 23:55:17,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 23:55:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:17,745 INFO L225 Difference]: With dead ends: 345 [2021-05-21 23:55:17,745 INFO L226 Difference]: Without dead ends: 297 [2021-05-21 23:55:17,747 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-21 23:55:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-05-21 23:55:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-05-21 23:55:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.864864864864865) internal successors, (552), 296 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 552 transitions. [2021-05-21 23:55:17,799 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 552 transitions. Word has length 61 [2021-05-21 23:55:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:17,799 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 552 transitions. [2021-05-21 23:55:17,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,799 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 552 transitions. [2021-05-21 23:55:17,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:55:17,810 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:17,810 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:17,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:55:17,814 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:17,814 INFO L82 PathProgramCache]: Analyzing trace with hash 69507375, now seen corresponding path program 1 times [2021-05-21 23:55:17,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:17,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429509485] [2021-05-21 23:55:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:55:17,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:17,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429509485] [2021-05-21 23:55:17,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429509485] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:55:17,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:55:17,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 23:55:17,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705877125] [2021-05-21 23:55:17,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 23:55:17,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:17,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 23:55:17,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 23:55:17,897 INFO L87 Difference]: Start difference. First operand 297 states and 552 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:17,928 INFO L93 Difference]: Finished difference Result 357 states and 672 transitions. [2021-05-21 23:55:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 23:55:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 23:55:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:17,930 INFO L225 Difference]: With dead ends: 357 [2021-05-21 23:55:17,930 INFO L226 Difference]: Without dead ends: 357 [2021-05-21 23:55:17,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 23:55:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-05-21 23:55:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 312. [2021-05-21 23:55:17,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.8713826366559485) internal successors, (582), 311 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 582 transitions. [2021-05-21 23:55:17,940 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 582 transitions. Word has length 61 [2021-05-21 23:55:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:17,940 INFO L482 AbstractCegarLoop]: Abstraction has 312 states and 582 transitions. [2021-05-21 23:55:17,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 582 transitions. [2021-05-21 23:55:17,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-21 23:55:17,941 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:17,941 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:17,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:55:17,941 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:17,942 INFO L82 PathProgramCache]: Analyzing trace with hash 518804448, now seen corresponding path program 1 times [2021-05-21 23:55:17,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:17,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866739408] [2021-05-21 23:55:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:55:18,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:18,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866739408] [2021-05-21 23:55:18,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866739408] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:18,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869397448] [2021-05-21 23:55:18,025 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 [2021-05-21 23:55:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:18,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2021-05-21 23:55:18,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 23:55:18,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869397448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:55:18,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-21 23:55:18,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-05-21 23:55:18,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124680909] [2021-05-21 23:55:18,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 23:55:18,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:18,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 23:55:18,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:55:18,303 INFO L87 Difference]: Start difference. First operand 312 states and 582 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:18,320 INFO L93 Difference]: Finished difference Result 438 states and 834 transitions. [2021-05-21 23:55:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 23:55:18,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-05-21 23:55:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:18,323 INFO L225 Difference]: With dead ends: 438 [2021-05-21 23:55:18,323 INFO L226 Difference]: Without dead ends: 438 [2021-05-21 23:55:18,323 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:55:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-05-21 23:55:18,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 330. [2021-05-21 23:55:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.878419452887538) internal successors, (618), 329 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 618 transitions. [2021-05-21 23:55:18,334 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 618 transitions. Word has length 66 [2021-05-21 23:55:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:18,334 INFO L482 AbstractCegarLoop]: Abstraction has 330 states and 618 transitions. [2021-05-21 23:55:18,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:18,334 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 618 transitions. [2021-05-21 23:55:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-21 23:55:18,336 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:18,336 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:18,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-21 23:55:18,557 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:18,557 INFO L82 PathProgramCache]: Analyzing trace with hash -393434949, now seen corresponding path program 1 times [2021-05-21 23:55:18,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:18,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989511628] [2021-05-21 23:55:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 23:55:18,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:18,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989511628] [2021-05-21 23:55:18,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989511628] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:18,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804317316] [2021-05-21 23:55:18,606 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 [2021-05-21 23:55:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-21 23:55:18,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 23:55:18,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804317316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:18,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:18,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 23:55:18,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550008642] [2021-05-21 23:55:18,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:55:18,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:55:18,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:55:18,844 INFO L87 Difference]: Start difference. First operand 330 states and 618 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:18,888 INFO L93 Difference]: Finished difference Result 458 states and 874 transitions. [2021-05-21 23:55:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 23:55:18,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-05-21 23:55:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:18,890 INFO L225 Difference]: With dead ends: 458 [2021-05-21 23:55:18,890 INFO L226 Difference]: Without dead ends: 458 [2021-05-21 23:55:18,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-21 23:55:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-05-21 23:55:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 410. [2021-05-21 23:55:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.902200488997555) internal successors, (778), 409 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 778 transitions. [2021-05-21 23:55:18,898 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 778 transitions. Word has length 74 [2021-05-21 23:55:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:18,898 INFO L482 AbstractCegarLoop]: Abstraction has 410 states and 778 transitions. [2021-05-21 23:55:18,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 778 transitions. [2021-05-21 23:55:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-21 23:55:18,899 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:18,899 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:19,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:55:19,113 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:19,113 INFO L82 PathProgramCache]: Analyzing trace with hash 402363818, now seen corresponding path program 2 times [2021-05-21 23:55:19,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:19,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650024918] [2021-05-21 23:55:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-21 23:55:19,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:19,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650024918] [2021-05-21 23:55:19,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650024918] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:19,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407885800] [2021-05-21 23:55:19,172 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 [2021-05-21 23:55:19,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 23:55:19,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:19,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-21 23:55:19,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-21 23:55:19,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407885800] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:19,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:19,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 23:55:19,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281306364] [2021-05-21 23:55:19,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:55:19,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:19,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:55:19,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:55:19,413 INFO L87 Difference]: Start difference. First operand 410 states and 778 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:19,443 INFO L93 Difference]: Finished difference Result 732 states and 1422 transitions. [2021-05-21 23:55:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 23:55:19,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-05-21 23:55:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:19,446 INFO L225 Difference]: With dead ends: 732 [2021-05-21 23:55:19,446 INFO L226 Difference]: Without dead ends: 732 [2021-05-21 23:55:19,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-21 23:55:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-05-21 23:55:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 594. [2021-05-21 23:55:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.9325463743676223) internal successors, (1146), 593 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1146 transitions. [2021-05-21 23:55:19,457 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1146 transitions. Word has length 79 [2021-05-21 23:55:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:19,459 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1146 transitions. [2021-05-21 23:55:19,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1146 transitions. [2021-05-21 23:55:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-21 23:55:19,460 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:19,460 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:19,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:55:19,679 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:19,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1060470651, now seen corresponding path program 3 times [2021-05-21 23:55:19,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:19,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45272284] [2021-05-21 23:55:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-21 23:55:19,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:19,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45272284] [2021-05-21 23:55:19,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45272284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:19,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096004424] [2021-05-21 23:55:19,750 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 [2021-05-21 23:55:19,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-21 23:55:19,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:19,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-21 23:55:19,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-21 23:55:20,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096004424] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:20,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:20,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-05-21 23:55:20,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763404963] [2021-05-21 23:55:20,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-21 23:55:20,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:20,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-21 23:55:20,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-21 23:55:20,023 INFO L87 Difference]: Start difference. First operand 594 states and 1146 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 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) [2021-05-21 23:55:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:20,710 INFO L93 Difference]: Finished difference Result 1220 states and 2398 transitions. [2021-05-21 23:55:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-21 23:55:20,710 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 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 87 [2021-05-21 23:55:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:20,713 INFO L225 Difference]: With dead ends: 1220 [2021-05-21 23:55:20,713 INFO L226 Difference]: Without dead ends: 1220 [2021-05-21 23:55:20,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 561.2ms TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 23:55:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-05-21 23:55:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 938. [2021-05-21 23:55:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.9573105656350054) internal successors, (1834), 937 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1834 transitions. [2021-05-21 23:55:20,729 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1834 transitions. Word has length 87 [2021-05-21 23:55:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:20,729 INFO L482 AbstractCegarLoop]: Abstraction has 938 states and 1834 transitions. [2021-05-21 23:55:20,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 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) [2021-05-21 23:55:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1834 transitions. [2021-05-21 23:55:20,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-05-21 23:55:20,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:20,731 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:20,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:55:20,947 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1607478993, now seen corresponding path program 4 times [2021-05-21 23:55:20,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:20,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752055179] [2021-05-21 23:55:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-05-21 23:55:21,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:21,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752055179] [2021-05-21 23:55:21,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752055179] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:21,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901571129] [2021-05-21 23:55:21,031 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 [2021-05-21 23:55:21,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 23:55:21,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:21,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-21 23:55:21,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-05-21 23:55:21,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901571129] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:21,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:21,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-05-21 23:55:21,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519820121] [2021-05-21 23:55:21,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 23:55:21,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:21,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 23:55:21,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:55:21,243 INFO L87 Difference]: Start difference. First operand 938 states and 1834 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:21,318 INFO L93 Difference]: Finished difference Result 1194 states and 2346 transitions. [2021-05-21 23:55:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 23:55:21,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-05-21 23:55:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:21,322 INFO L225 Difference]: With dead ends: 1194 [2021-05-21 23:55:21,322 INFO L226 Difference]: Without dead ends: 1194 [2021-05-21 23:55:21,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-05-21 23:55:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-05-21 23:55:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1098. [2021-05-21 23:55:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.9635369188696445) internal successors, (2154), 1097 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2154 transitions. [2021-05-21 23:55:21,337 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2154 transitions. Word has length 100 [2021-05-21 23:55:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:21,337 INFO L482 AbstractCegarLoop]: Abstraction has 1098 states and 2154 transitions. [2021-05-21 23:55:21,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2154 transitions. [2021-05-21 23:55:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-21 23:55:21,338 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:21,339 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:21,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-21 23:55:21,553 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:21,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:21,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1071562496, now seen corresponding path program 5 times [2021-05-21 23:55:21,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:21,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149586185] [2021-05-21 23:55:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-05-21 23:55:21,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:21,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149586185] [2021-05-21 23:55:21,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149586185] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:21,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781328975] [2021-05-21 23:55:21,642 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 [2021-05-21 23:55:21,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-05-21 23:55:21,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:21,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-21 23:55:21,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-05-21 23:55:21,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781328975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:21,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:21,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-05-21 23:55:21,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735124933] [2021-05-21 23:55:21,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-21 23:55:21,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:21,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-21 23:55:21,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:55:21,851 INFO L87 Difference]: Start difference. First operand 1098 states and 2154 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2021-05-21 23:55:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:21,946 INFO L93 Difference]: Finished difference Result 1354 states and 2666 transitions. [2021-05-21 23:55:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 23:55:21,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 105 [2021-05-21 23:55:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:21,949 INFO L225 Difference]: With dead ends: 1354 [2021-05-21 23:55:21,949 INFO L226 Difference]: Without dead ends: 1354 [2021-05-21 23:55:21,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-05-21 23:55:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-05-21 23:55:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1258. [2021-05-21 23:55:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 1.9681782020684169) internal successors, (2474), 1257 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2474 transitions. [2021-05-21 23:55:21,965 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2474 transitions. Word has length 105 [2021-05-21 23:55:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:21,965 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 2474 transitions. [2021-05-21 23:55:21,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2021-05-21 23:55:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2474 transitions. [2021-05-21 23:55:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-21 23:55:21,967 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:21,967 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:22,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:55:22,181 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:22,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1117647921, now seen corresponding path program 6 times [2021-05-21 23:55:22,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:22,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098218616] [2021-05-21 23:55:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-05-21 23:55:22,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:22,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098218616] [2021-05-21 23:55:22,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098218616] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:22,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355365484] [2021-05-21 23:55:22,258 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 [2021-05-21 23:55:22,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-21 23:55:22,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:22,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-21 23:55:22,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-05-21 23:55:22,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355365484] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:22,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:22,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2021-05-21 23:55:22,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815337800] [2021-05-21 23:55:22,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-21 23:55:22,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:22,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-21 23:55:22,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-05-21 23:55:22,528 INFO L87 Difference]: Start difference. First operand 1258 states and 2474 transitions. Second operand has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:25,762 INFO L93 Difference]: Finished difference Result 2158 states and 4274 transitions. [2021-05-21 23:55:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2021-05-21 23:55:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-05-21 23:55:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:25,767 INFO L225 Difference]: With dead ends: 2158 [2021-05-21 23:55:25,767 INFO L226 Difference]: Without dead ends: 2158 [2021-05-21 23:55:25,773 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16756 ImplicationChecksByTransitivity, 2906.6ms TimeCoverageRelationStatistics Valid=7859, Invalid=30361, Unknown=0, NotChecked=0, Total=38220 [2021-05-21 23:55:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-05-21 23:55:25,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1762. [2021-05-21 23:55:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1761 states have (on average 1.9772856331629756) internal successors, (3482), 1761 states have internal predecessors, (3482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 3482 transitions. [2021-05-21 23:55:25,795 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 3482 transitions. Word has length 110 [2021-05-21 23:55:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:25,795 INFO L482 AbstractCegarLoop]: Abstraction has 1762 states and 3482 transitions. [2021-05-21 23:55:25,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 3482 transitions. [2021-05-21 23:55:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-21 23:55:25,798 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:25,798 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:26,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:55:26,002 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:26,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:26,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1276635771, now seen corresponding path program 7 times [2021-05-21 23:55:26,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:26,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189779252] [2021-05-21 23:55:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-05-21 23:55:26,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:26,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189779252] [2021-05-21 23:55:26,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189779252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:26,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215410580] [2021-05-21 23:55:26,112 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 [2021-05-21 23:55:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:26,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-21 23:55:26,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-05-21 23:55:26,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215410580] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:26,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:26,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-05-21 23:55:26,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038809578] [2021-05-21 23:55:26,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 23:55:26,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:26,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 23:55:26,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-05-21 23:55:26,351 INFO L87 Difference]: Start difference. First operand 1762 states and 3482 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:26,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:26,473 INFO L93 Difference]: Finished difference Result 2082 states and 4122 transitions. [2021-05-21 23:55:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 23:55:26,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-05-21 23:55:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:26,477 INFO L225 Difference]: With dead ends: 2082 [2021-05-21 23:55:26,478 INFO L226 Difference]: Without dead ends: 2082 [2021-05-21 23:55:26,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 147.2ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-05-21 23:55:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-05-21 23:55:26,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1962. [2021-05-21 23:55:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.979602243753187) internal successors, (3882), 1961 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 3882 transitions. [2021-05-21 23:55:26,517 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 3882 transitions. Word has length 123 [2021-05-21 23:55:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:26,518 INFO L482 AbstractCegarLoop]: Abstraction has 1962 states and 3882 transitions. [2021-05-21 23:55:26,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 3882 transitions. [2021-05-21 23:55:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-05-21 23:55:26,520 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:26,520 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:26,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-21 23:55:26,736 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:26,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:26,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1626379628, now seen corresponding path program 8 times [2021-05-21 23:55:26,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:26,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384918401] [2021-05-21 23:55:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-05-21 23:55:26,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:26,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384918401] [2021-05-21 23:55:26,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384918401] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:26,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478912056] [2021-05-21 23:55:26,868 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 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 [2021-05-21 23:55:26,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 23:55:26,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-21 23:55:26,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-05-21 23:55:27,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478912056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:27,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:27,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-05-21 23:55:27,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096232848] [2021-05-21 23:55:27,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 23:55:27,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:27,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 23:55:27,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-05-21 23:55:27,099 INFO L87 Difference]: Start difference. First operand 1962 states and 3882 transitions. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:27,257 INFO L93 Difference]: Finished difference Result 2282 states and 4522 transitions. [2021-05-21 23:55:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-21 23:55:27,257 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-05-21 23:55:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:27,262 INFO L225 Difference]: With dead ends: 2282 [2021-05-21 23:55:27,262 INFO L226 Difference]: Without dead ends: 2282 [2021-05-21 23:55:27,263 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-05-21 23:55:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2021-05-21 23:55:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2162. [2021-05-21 23:55:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2161 states have (on average 1.98149005090236) internal successors, (4282), 2161 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 4282 transitions. [2021-05-21 23:55:27,288 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 4282 transitions. Word has length 128 [2021-05-21 23:55:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:27,288 INFO L482 AbstractCegarLoop]: Abstraction has 2162 states and 4282 transitions. [2021-05-21 23:55:27,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 4282 transitions. [2021-05-21 23:55:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-21 23:55:27,291 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:27,291 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:27,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:55:27,509 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1177688347, now seen corresponding path program 9 times [2021-05-21 23:55:27,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:27,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55017802] [2021-05-21 23:55:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-05-21 23:55:27,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:27,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55017802] [2021-05-21 23:55:27,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55017802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:27,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823111063] [2021-05-21 23:55:27,639 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 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 [2021-05-21 23:55:27,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-05-21 23:55:27,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:27,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-21 23:55:27,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-05-21 23:55:27,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823111063] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:27,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:27,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-05-21 23:55:27,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149700442] [2021-05-21 23:55:27,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-21 23:55:27,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:27,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-21 23:55:27,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-05-21 23:55:27,952 INFO L87 Difference]: Start difference. First operand 2162 states and 4282 transitions. Second operand has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:37,072 INFO L93 Difference]: Finished difference Result 3336 states and 6630 transitions. [2021-05-21 23:55:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-05-21 23:55:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-05-21 23:55:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:37,079 INFO L225 Difference]: With dead ends: 3336 [2021-05-21 23:55:37,079 INFO L226 Difference]: Without dead ends: 3336 [2021-05-21 23:55:37,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66570 ImplicationChecksByTransitivity, 8539.3ms TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-05-21 23:55:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-05-21 23:55:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2826. [2021-05-21 23:55:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2825 states have (on average 1.9858407079646017) internal successors, (5610), 2825 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 5610 transitions. [2021-05-21 23:55:37,117 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 5610 transitions. Word has length 133 [2021-05-21 23:55:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:37,117 INFO L482 AbstractCegarLoop]: Abstraction has 2826 states and 5610 transitions. [2021-05-21 23:55:37,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 5610 transitions. [2021-05-21 23:55:37,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-05-21 23:55:37,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:37,121 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:37,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:55:37,337 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:37,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:37,338 INFO L82 PathProgramCache]: Analyzing trace with hash 556479399, now seen corresponding path program 10 times [2021-05-21 23:55:37,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:37,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648780551] [2021-05-21 23:55:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-05-21 23:55:37,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:37,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648780551] [2021-05-21 23:55:37,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648780551] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:37,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733159498] [2021-05-21 23:55:37,487 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 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 [2021-05-21 23:55:37,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 23:55:37,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-21 23:55:37,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-05-21 23:55:37,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733159498] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:37,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:37,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-05-21 23:55:37,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386528012] [2021-05-21 23:55:37,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-21 23:55:37,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:37,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-21 23:55:37,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-05-21 23:55:37,745 INFO L87 Difference]: Start difference. First operand 2826 states and 5610 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:37,986 INFO L93 Difference]: Finished difference Result 3210 states and 6378 transitions. [2021-05-21 23:55:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 23:55:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-05-21 23:55:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:37,993 INFO L225 Difference]: With dead ends: 3210 [2021-05-21 23:55:37,993 INFO L226 Difference]: Without dead ends: 3210 [2021-05-21 23:55:37,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 264.5ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 23:55:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-05-21 23:55:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3066. [2021-05-21 23:55:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3065 states have (on average 1.9869494290375205) internal successors, (6090), 3065 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 6090 transitions. [2021-05-21 23:55:38,025 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 6090 transitions. Word has length 146 [2021-05-21 23:55:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:38,025 INFO L482 AbstractCegarLoop]: Abstraction has 3066 states and 6090 transitions. [2021-05-21 23:55:38,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 6090 transitions. [2021-05-21 23:55:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-21 23:55:38,029 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:38,029 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:38,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-21 23:55:38,245 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1605028246, now seen corresponding path program 11 times [2021-05-21 23:55:38,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:38,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753916340] [2021-05-21 23:55:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-05-21 23:55:38,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:38,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753916340] [2021-05-21 23:55:38,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753916340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:38,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366477299] [2021-05-21 23:55:38,417 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 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 [2021-05-21 23:55:38,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-05-21 23:55:38,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:38,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-21 23:55:38,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-05-21 23:55:38,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366477299] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:38,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:38,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2021-05-21 23:55:38,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77443216] [2021-05-21 23:55:38,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-21 23:55:38,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:38,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-21 23:55:38,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-05-21 23:55:38,837 INFO L87 Difference]: Start difference. First operand 3066 states and 6090 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:55:56,412 INFO L93 Difference]: Finished difference Result 4444 states and 8846 transitions. [2021-05-21 23:55:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 545 states. [2021-05-21 23:55:56,412 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-05-21 23:55:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:55:56,422 INFO L225 Difference]: With dead ends: 4444 [2021-05-21 23:55:56,422 INFO L226 Difference]: Without dead ends: 4444 [2021-05-21 23:55:56,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151458 ImplicationChecksByTransitivity, 16846.0ms TimeCoverageRelationStatistics Valid=57699, Invalid=255341, Unknown=0, NotChecked=0, Total=313040 [2021-05-21 23:55:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2021-05-21 23:55:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3850. [2021-05-21 23:55:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 1.9896076903091713) internal successors, (7658), 3849 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 7658 transitions. [2021-05-21 23:55:56,473 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 7658 transitions. Word has length 151 [2021-05-21 23:55:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:55:56,473 INFO L482 AbstractCegarLoop]: Abstraction has 3850 states and 7658 transitions. [2021-05-21 23:55:56,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:55:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 7658 transitions. [2021-05-21 23:55:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-05-21 23:55:56,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:55:56,478 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:55:56,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-21 23:55:56,694 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:55:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:55:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1225339166, now seen corresponding path program 12 times [2021-05-21 23:55:56,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:55:56,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083261312] [2021-05-21 23:55:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:55:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:55:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-05-21 23:55:56,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:55:56,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083261312] [2021-05-21 23:55:56,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083261312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:56,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364988873] [2021-05-21 23:55:56,886 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 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 [2021-05-21 23:55:57,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-05-21 23:55:57,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:55:57,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-21 23:55:57,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:55:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-05-21 23:55:57,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364988873] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:55:57,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:55:57,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 38 [2021-05-21 23:55:57,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223686554] [2021-05-21 23:55:57,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-21 23:55:57,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:55:57,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-21 23:55:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-05-21 23:55:57,378 INFO L87 Difference]: Start difference. First operand 3850 states and 7658 transitions. Second operand has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:25,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:56:25,226 INFO L93 Difference]: Finished difference Result 5362 states and 10682 transitions. [2021-05-21 23:56:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 701 states. [2021-05-21 23:56:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-05-21 23:56:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:56:25,232 INFO L225 Difference]: With dead ends: 5362 [2021-05-21 23:56:25,232 INFO L226 Difference]: Without dead ends: 5362 [2021-05-21 23:56:25,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253004 ImplicationChecksByTransitivity, 26747.2ms TimeCoverageRelationStatistics Valid=92780, Invalid=422026, Unknown=0, NotChecked=0, Total=514806 [2021-05-21 23:56:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-05-21 23:56:25,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 4714. [2021-05-21 23:56:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4714 states, 4713 states have (on average 1.991512836834288) internal successors, (9386), 4713 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 9386 transitions. [2021-05-21 23:56:25,290 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 9386 transitions. Word has length 164 [2021-05-21 23:56:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:56:25,290 INFO L482 AbstractCegarLoop]: Abstraction has 4714 states and 9386 transitions. [2021-05-21 23:56:25,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 9386 transitions. [2021-05-21 23:56:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-21 23:56:25,296 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:56:25,296 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:56:25,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-21 23:56:25,509 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:56:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:56:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1616708884, now seen corresponding path program 13 times [2021-05-21 23:56:25,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:56:25,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690201661] [2021-05-21 23:56:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:56:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:56:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-05-21 23:56:25,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:56:25,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690201661] [2021-05-21 23:56:25,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690201661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:56:25,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849544807] [2021-05-21 23:56:25,734 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 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 [2021-05-21 23:56:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:56:25,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-21 23:56:25,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:56:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-05-21 23:56:26,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849544807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:56:26,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:56:26,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-05-21 23:56:26,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098286271] [2021-05-21 23:56:26,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-21 23:56:26,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:56:26,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-21 23:56:26,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-05-21 23:56:26,056 INFO L87 Difference]: Start difference. First operand 4714 states and 9386 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:56:26,415 INFO L93 Difference]: Finished difference Result 5226 states and 10410 transitions. [2021-05-21 23:56:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 23:56:26,415 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-05-21 23:56:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:56:26,420 INFO L225 Difference]: With dead ends: 5226 [2021-05-21 23:56:26,420 INFO L226 Difference]: Without dead ends: 5226 [2021-05-21 23:56:26,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 443.9ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 23:56:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-05-21 23:56:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 5034. [2021-05-21 23:56:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5033 states have (on average 1.9920524538048878) internal successors, (10026), 5033 states have internal predecessors, (10026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 10026 transitions. [2021-05-21 23:56:26,467 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 10026 transitions. Word has length 177 [2021-05-21 23:56:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:56:26,467 INFO L482 AbstractCegarLoop]: Abstraction has 5034 states and 10026 transitions. [2021-05-21 23:56:26,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 10026 transitions. [2021-05-21 23:56:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-05-21 23:56:26,473 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:56:26,473 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:56:26,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:56:26,688 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:56:26,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:56:26,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1954781411, now seen corresponding path program 14 times [2021-05-21 23:56:26,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:56:26,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071955038] [2021-05-21 23:56:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:56:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:56:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-05-21 23:56:26,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:56:26,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071955038] [2021-05-21 23:56:26,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071955038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:56:26,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55521578] [2021-05-21 23:56:26,942 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:56:27,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 23:56:27,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:56:27,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-21 23:56:27,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:56:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-05-21 23:56:27,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55521578] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:56:27,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:56:27,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-05-21 23:56:27,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053693290] [2021-05-21 23:56:27,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-21 23:56:27,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:56:27,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-21 23:56:27,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-05-21 23:56:27,248 INFO L87 Difference]: Start difference. First operand 5034 states and 10026 transitions. Second operand has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:56:27,653 INFO L93 Difference]: Finished difference Result 5546 states and 11050 transitions. [2021-05-21 23:56:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 23:56:27,654 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-05-21 23:56:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:56:27,659 INFO L225 Difference]: With dead ends: 5546 [2021-05-21 23:56:27,659 INFO L226 Difference]: Without dead ends: 5546 [2021-05-21 23:56:27,660 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 516.8ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 23:56:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-05-21 23:56:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 5354. [2021-05-21 23:56:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 1.9925275546422567) internal successors, (10666), 5353 states have internal predecessors, (10666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 10666 transitions. [2021-05-21 23:56:27,704 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 10666 transitions. Word has length 182 [2021-05-21 23:56:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:56:27,705 INFO L482 AbstractCegarLoop]: Abstraction has 5354 states and 10666 transitions. [2021-05-21 23:56:27,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:56:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 10666 transitions. [2021-05-21 23:56:27,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-21 23:56:27,710 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:56:27,710 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:56:27,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-21 23:56:27,926 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:56:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:56:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1102843508, now seen corresponding path program 15 times [2021-05-21 23:56:27,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:56:27,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161121689] [2021-05-21 23:56:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:56:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:56:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-05-21 23:56:28,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:56:28,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161121689] [2021-05-21 23:56:28,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161121689] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:56:28,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479737230] [2021-05-21 23:56:28,223 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:56:28,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-05-21 23:56:28,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:56:28,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-21 23:56:28,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:56:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-05-21 23:56:28,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479737230] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:56:28,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:56:28,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 46 [2021-05-21 23:56:28,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081553285] [2021-05-21 23:56:28,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-21 23:56:28,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:56:28,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-21 23:56:28,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1736, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 23:56:28,737 INFO L87 Difference]: Start difference. First operand 5354 states and 10666 transitions. Second operand has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:57:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:57:24,126 INFO L93 Difference]: Finished difference Result 7140 states and 14238 transitions. [2021-05-21 23:57:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2021-05-21 23:57:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2021-05-21 23:57:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:57:24,132 INFO L225 Difference]: With dead ends: 7140 [2021-05-21 23:57:24,133 INFO L226 Difference]: Without dead ends: 7140 [2021-05-21 23:57:24,172 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2193 GetRequests, 1161 SyntacticMatches, 0 SemanticMatches, 1032 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534325 ImplicationChecksByTransitivity, 53334.5ms TimeCoverageRelationStatistics Valid=187686, Invalid=880436, Unknown=0, NotChecked=0, Total=1068122 [2021-05-21 23:57:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-05-21 23:57:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6378. [2021-05-21 23:57:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6377 states have (on average 1.9937274580523758) internal successors, (12714), 6377 states have internal predecessors, (12714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:57:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 12714 transitions. [2021-05-21 23:57:24,226 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 12714 transitions. Word has length 187 [2021-05-21 23:57:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:57:24,226 INFO L482 AbstractCegarLoop]: Abstraction has 6378 states and 12714 transitions. [2021-05-21 23:57:24,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:57:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 12714 transitions. [2021-05-21 23:57:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-05-21 23:57:24,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:57:24,233 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:57:24,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-21 23:57:24,449 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:57:24,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:57:24,449 INFO L82 PathProgramCache]: Analyzing trace with hash 493157464, now seen corresponding path program 16 times [2021-05-21 23:57:24,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:57:24,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480544367] [2021-05-21 23:57:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:57:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:57:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-05-21 23:57:24,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:57:24,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480544367] [2021-05-21 23:57:24,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480544367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:57:24,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454455688] [2021-05-21 23:57:24,749 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:57:24,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 23:57:24,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:57:24,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-21 23:57:24,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:57:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-05-21 23:57:25,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454455688] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:57:25,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:57:25,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-05-21 23:57:25,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982824555] [2021-05-21 23:57:25,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-21 23:57:25,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:57:25,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-21 23:57:25,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 23:57:25,066 INFO L87 Difference]: Start difference. First operand 6378 states and 12714 transitions. Second operand has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:57:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:57:25,667 INFO L93 Difference]: Finished difference Result 6954 states and 13866 transitions. [2021-05-21 23:57:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 23:57:25,669 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-05-21 23:57:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:57:25,674 INFO L225 Difference]: With dead ends: 6954 [2021-05-21 23:57:25,674 INFO L226 Difference]: Without dead ends: 6954 [2021-05-21 23:57:25,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 730.3ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 23:57:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6954 states. [2021-05-21 23:57:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6954 to 6738. [2021-05-21 23:57:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.9940626391568947) internal successors, (13434), 6737 states have internal predecessors, (13434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:57:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 13434 transitions. [2021-05-21 23:57:25,732 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 13434 transitions. Word has length 200 [2021-05-21 23:57:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:57:25,733 INFO L482 AbstractCegarLoop]: Abstraction has 6738 states and 13434 transitions. [2021-05-21 23:57:25,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:57:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 13434 transitions. [2021-05-21 23:57:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-21 23:57:25,740 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:57:25,740 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:57:25,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:57:25,953 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:57:25,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:57:25,953 INFO L82 PathProgramCache]: Analyzing trace with hash -771856121, now seen corresponding path program 17 times [2021-05-21 23:57:25,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:57:25,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061238113] [2021-05-21 23:57:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:57:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:57:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-05-21 23:57:26,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:57:26,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061238113] [2021-05-21 23:57:26,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061238113] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:57:26,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271678720] [2021-05-21 23:57:26,316 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:57:26,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-05-21 23:57:26,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:57:26,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-21 23:57:26,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:57:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-05-21 23:57:26,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271678720] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:57:26,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:57:26,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 19] total 52 [2021-05-21 23:57:26,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107456504] [2021-05-21 23:57:26,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-21 23:57:26,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:57:26,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-21 23:57:26,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 23:57:26,901 INFO L87 Difference]: Start difference. First operand 6738 states and 13434 transitions. Second operand has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:57:29,203 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-21 23:58:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:58:55,946 INFO L93 Difference]: Finished difference Result 8728 states and 17414 transitions. [2021-05-21 23:58:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1301 states. [2021-05-21 23:58:55,946 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2021-05-21 23:58:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:58:55,951 INFO L225 Difference]: With dead ends: 8728 [2021-05-21 23:58:55,951 INFO L226 Difference]: Without dead ends: 8728 [2021-05-21 23:58:56,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2785 GetRequests, 1462 SyntacticMatches, 0 SemanticMatches, 1323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886582 ImplicationChecksByTransitivity, 85598.3ms TimeCoverageRelationStatistics Valid=303321, Invalid=1450979, Unknown=0, NotChecked=0, Total=1754300 [2021-05-21 23:58:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2021-05-21 23:58:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 7882. [2021-05-21 23:58:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7882 states, 7881 states have (on average 1.9949245019667554) internal successors, (15722), 7881 states have internal predecessors, (15722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:58:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7882 states to 7882 states and 15722 transitions. [2021-05-21 23:58:56,072 INFO L78 Accepts]: Start accepts. Automaton has 7882 states and 15722 transitions. Word has length 205 [2021-05-21 23:58:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:58:56,072 INFO L482 AbstractCegarLoop]: Abstraction has 7882 states and 15722 transitions. [2021-05-21 23:58:56,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:58:56,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7882 states and 15722 transitions. [2021-05-21 23:58:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-05-21 23:58:56,080 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:58:56,080 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:58:56,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:58:56,296 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:58:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:58:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash -522613101, now seen corresponding path program 18 times [2021-05-21 23:58:56,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:58:56,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231304633] [2021-05-21 23:58:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:58:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:58:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-05-21 23:58:56,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:58:56,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231304633] [2021-05-21 23:58:56,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231304633] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:58:56,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448024440] [2021-05-21 23:58:56,716 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 23:58:56,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-05-21 23:58:56,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 23:58:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-21 23:58:56,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 23:58:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-05-21 23:58:57,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448024440] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 23:58:57,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 23:58:57,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 21] total 56 [2021-05-21 23:58:57,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599144453] [2021-05-21 23:58:57,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-21 23:58:57,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:58:57,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-21 23:58:57,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2601, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 23:58:57,453 INFO L87 Difference]: Start difference. First operand 7882 states and 15722 transitions. Second operand has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:01:03,578 INFO L93 Difference]: Finished difference Result 10006 states and 19970 transitions. [2021-05-22 00:01:03,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1538 states. [2021-05-22 00:01:03,578 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-05-22 00:01:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:01:03,584 INFO L225 Difference]: With dead ends: 10006 [2021-05-22 00:01:03,584 INFO L226 Difference]: Without dead ends: 10006 [2021-05-22 00:01:03,680 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3270 GetRequests, 1708 SyntacticMatches, 0 SemanticMatches, 1562 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243135 ImplicationChecksByTransitivity, 121516.1ms TimeCoverageRelationStatistics Valid=418136, Invalid=2026396, Unknown=0, NotChecked=0, Total=2444532 [2021-05-22 00:01:03,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2021-05-22 00:01:03,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 9106. [2021-05-22 00:01:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9106 states, 9105 states have (on average 1.9956068094453596) internal successors, (18170), 9105 states have internal predecessors, (18170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 18170 transitions. [2021-05-22 00:01:03,760 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 18170 transitions. Word has length 218 [2021-05-22 00:01:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:01:03,760 INFO L482 AbstractCegarLoop]: Abstraction has 9106 states and 18170 transitions. [2021-05-22 00:01:03,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 18170 transitions. [2021-05-22 00:01:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-22 00:01:03,768 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:01:03,769 INFO L521 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:01:03,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:01:03,991 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:01:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:01:03,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1286709155, now seen corresponding path program 19 times [2021-05-22 00:01:03,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:01:03,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420275043] [2021-05-22 00:01:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:01:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:01:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-05-22 00:01:04,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:01:04,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420275043] [2021-05-22 00:01:04,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420275043] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:01:04,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100209666] [2021-05-22 00:01:04,430 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:01:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:01:04,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-22 00:01:04,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:01:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-05-22 00:01:04,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100209666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:01:04,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:01:04,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-05-22 00:01:04,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523975038] [2021-05-22 00:01:04,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-22 00:01:04,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:01:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-22 00:01:04,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-05-22 00:01:04,785 INFO L87 Difference]: Start difference. First operand 9106 states and 18170 transitions. Second operand has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:01:05,498 INFO L93 Difference]: Finished difference Result 9810 states and 19578 transitions. [2021-05-22 00:01:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-22 00:01:05,499 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-05-22 00:01:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:01:05,506 INFO L225 Difference]: With dead ends: 9810 [2021-05-22 00:01:05,506 INFO L226 Difference]: Without dead ends: 9810 [2021-05-22 00:01:05,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 926.5ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-05-22 00:01:05,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9810 states. [2021-05-22 00:01:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9810 to 9546. [2021-05-22 00:01:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9546 states, 9545 states have (on average 1.995809324253536) internal successors, (19050), 9545 states have internal predecessors, (19050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9546 states to 9546 states and 19050 transitions. [2021-05-22 00:01:05,773 INFO L78 Accepts]: Start accepts. Automaton has 9546 states and 19050 transitions. Word has length 231 [2021-05-22 00:01:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:01:05,773 INFO L482 AbstractCegarLoop]: Abstraction has 9546 states and 19050 transitions. [2021-05-22 00:01:05,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 9546 states and 19050 transitions. [2021-05-22 00:01:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-05-22 00:01:05,782 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:01:05,783 INFO L521 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:01:05,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-22 00:01:05,999 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:01:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:01:05,999 INFO L82 PathProgramCache]: Analyzing trace with hash 528686542, now seen corresponding path program 20 times [2021-05-22 00:01:05,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:01:05,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312720841] [2021-05-22 00:01:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:01:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:01:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-05-22 00:01:06,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:01:06,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312720841] [2021-05-22 00:01:06,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312720841] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:01:06,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967302338] [2021-05-22 00:01:06,489 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:01:06,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:01:06,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:01:06,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-22 00:01:06,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:01:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-05-22 00:01:06,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967302338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:01:06,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:01:06,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-05-22 00:01:06,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73805395] [2021-05-22 00:01:06,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-22 00:01:06,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:01:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-22 00:01:06,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-05-22 00:01:06,863 INFO L87 Difference]: Start difference. First operand 9546 states and 19050 transitions. Second operand has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:01:07,680 INFO L93 Difference]: Finished difference Result 9986 states and 19930 transitions. [2021-05-22 00:01:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-22 00:01:07,680 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2021-05-22 00:01:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:01:07,686 INFO L225 Difference]: With dead ends: 9986 [2021-05-22 00:01:07,686 INFO L226 Difference]: Without dead ends: 9986 [2021-05-22 00:01:07,687 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1048.4ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-05-22 00:01:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2021-05-22 00:01:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2021-05-22 00:01:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9985 states have (on average 1.9959939909864797) internal successors, (19930), 9985 states have internal predecessors, (19930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 19930 transitions. [2021-05-22 00:01:07,760 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 19930 transitions. Word has length 236 [2021-05-22 00:01:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:01:07,760 INFO L482 AbstractCegarLoop]: Abstraction has 9986 states and 19930 transitions. [2021-05-22 00:01:07,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:01:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 19930 transitions. [2021-05-22 00:01:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-22 00:01:07,768 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:01:07,768 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:01:07,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-22 00:01:07,969 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:01:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:01:07,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2022711037, now seen corresponding path program 21 times [2021-05-22 00:01:07,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:01:07,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170310448] [2021-05-22 00:01:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:01:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:01:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:01:08,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:01:08,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170310448] [2021-05-22 00:01:08,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170310448] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:01:08,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876245034] [2021-05-22 00:01:08,603 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:01:08,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-05-22 00:01:08,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:01:08,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-22 00:01:08,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:01:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-05-22 00:01:09,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876245034] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:01:09,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:01:09,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 23] total 67 [2021-05-22 00:01:09,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084652516] [2021-05-22 00:01:09,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-22 00:01:09,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:01:09,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-22 00:01:09,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=3671, Unknown=0, NotChecked=0, Total=4422 [2021-05-22 00:01:09,446 INFO L87 Difference]: Start difference. First operand 9986 states and 19930 transitions. Second operand has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:02:13,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:02:13,548 INFO L93 Difference]: Finished difference Result 170472 states and 340902 transitions. [2021-05-22 00:02:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1102 states. [2021-05-22 00:02:13,550 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2021-05-22 00:02:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:02:13,743 INFO L225 Difference]: With dead ends: 170472 [2021-05-22 00:02:13,743 INFO L226 Difference]: Without dead ends: 170472 [2021-05-22 00:02:13,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2400 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 1123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635937 ImplicationChecksByTransitivity, 56079.1ms TimeCoverageRelationStatistics Valid=255553, Invalid=1008947, Unknown=0, NotChecked=0, Total=1264500 [2021-05-22 00:02:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170472 states. [2021-05-22 00:02:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170472 to 10890. [2021-05-22 00:02:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10890 states, 10889 states have (on average 1.9963265680962439) internal successors, (21738), 10889 states have internal predecessors, (21738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:02:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10890 states to 10890 states and 21738 transitions. [2021-05-22 00:02:14,405 INFO L78 Accepts]: Start accepts. Automaton has 10890 states and 21738 transitions. Word has length 241 [2021-05-22 00:02:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:02:14,405 INFO L482 AbstractCegarLoop]: Abstraction has 10890 states and 21738 transitions. [2021-05-22 00:02:14,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:02:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 10890 states and 21738 transitions. [2021-05-22 00:02:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-22 00:02:14,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:02:14,414 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:02:14,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:02:14,615 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:02:14,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:02:14,615 INFO L82 PathProgramCache]: Analyzing trace with hash -17430824, now seen corresponding path program 22 times [2021-05-22 00:02:14,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:02:14,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756886711] [2021-05-22 00:02:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:02:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:02:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 1421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:02:15,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:02:15,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756886711] [2021-05-22 00:02:15,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756886711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:02:15,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776353225] [2021-05-22 00:02:15,393 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:02:15,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-22 00:02:15,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:02:15,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-22 00:02:15,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:02:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-05-22 00:02:16,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776353225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:02:16,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:02:16,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 25] total 71 [2021-05-22 00:02:16,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000305306] [2021-05-22 00:02:16,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-22 00:02:16,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:02:16,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-22 00:02:16,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=4148, Unknown=0, NotChecked=0, Total=4970 [2021-05-22 00:02:16,251 INFO L87 Difference]: Start difference. First operand 10890 states and 21738 transitions. Second operand has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:03:40,755 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-05-22 00:03:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:03:51,852 INFO L93 Difference]: Finished difference Result 211585 states and 423128 transitions. [2021-05-22 00:03:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1363 states. [2021-05-22 00:03:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2021-05-22 00:03:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:03:52,034 INFO L225 Difference]: With dead ends: 211585 [2021-05-22 00:03:52,034 INFO L226 Difference]: Without dead ends: 211585 [2021-05-22 00:03:52,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2928 GetRequests, 1542 SyntacticMatches, 0 SemanticMatches, 1386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983344 ImplicationChecksByTransitivity, 83069.4ms TimeCoverageRelationStatistics Valid=390931, Invalid=1534225, Unknown=0, NotChecked=0, Total=1925156 [2021-05-22 00:03:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211585 states. [2021-05-22 00:03:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211585 to 11794. [2021-05-22 00:03:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 11793 states have (on average 1.9966081573814976) internal successors, (23546), 11793 states have internal predecessors, (23546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:03:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 23546 transitions. [2021-05-22 00:03:52,986 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 23546 transitions. Word has length 249 [2021-05-22 00:03:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:03:52,987 INFO L482 AbstractCegarLoop]: Abstraction has 11794 states and 23546 transitions. [2021-05-22 00:03:52,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:03:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 23546 transitions. [2021-05-22 00:03:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-22 00:03:52,997 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:03:52,997 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:03:53,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-22 00:03:53,212 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:03:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:03:53,213 INFO L82 PathProgramCache]: Analyzing trace with hash -418389069, now seen corresponding path program 23 times [2021-05-22 00:03:53,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:03:53,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119485747] [2021-05-22 00:03:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:03:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:03:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:03:53,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:03:53,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119485747] [2021-05-22 00:03:53,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119485747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:03:53,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091500726] [2021-05-22 00:03:53,893 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:03:53,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2021-05-22 00:03:53,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:03:53,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-22 00:03:54,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:03:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-05-22 00:03:54,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091500726] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:03:54,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:03:54,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 27] total 75 [2021-05-22 00:03:54,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002694543] [2021-05-22 00:03:54,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-22 00:03:54,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:03:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-22 00:03:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=4653, Unknown=0, NotChecked=0, Total=5550 [2021-05-22 00:03:54,975 INFO L87 Difference]: Start difference. First operand 11794 states and 23546 transitions. Second operand has 75 states, 75 states have (on average 5.346666666666667) internal successors, (401), 75 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:06:02,430 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-05-22 00:06:09,597 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-22 00:06:19,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:06:19,411 INFO L93 Difference]: Finished difference Result 257593 states and 515144 transitions. [2021-05-22 00:06:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1665 states. [2021-05-22 00:06:19,411 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.346666666666667) internal successors, (401), 75 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2021-05-22 00:06:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:06:19,627 INFO L225 Difference]: With dead ends: 257593 [2021-05-22 00:06:19,628 INFO L226 Difference]: Without dead ends: 257593 [2021-05-22 00:06:19,883 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3538 GetRequests, 1848 SyntacticMatches, 0 SemanticMatches, 1690 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478939 ImplicationChecksByTransitivity, 123701.1ms TimeCoverageRelationStatistics Valid=583037, Invalid=2278135, Unknown=0, NotChecked=0, Total=2861172 [2021-05-22 00:06:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257593 states. [2021-05-22 00:06:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257593 to 12698. [2021-05-22 00:06:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12698 states, 12697 states have (on average 1.9968496495235095) internal successors, (25354), 12697 states have internal predecessors, (25354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:06:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12698 states to 12698 states and 25354 transitions. [2021-05-22 00:06:20,830 INFO L78 Accepts]: Start accepts. Automaton has 12698 states and 25354 transitions. Word has length 257 [2021-05-22 00:06:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:06:20,830 INFO L482 AbstractCegarLoop]: Abstraction has 12698 states and 25354 transitions. [2021-05-22 00:06:20,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 5.346666666666667) internal successors, (401), 75 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:06:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 12698 states and 25354 transitions. [2021-05-22 00:06:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-22 00:06:20,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:06:20,841 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:06:21,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:06:21,056 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:06:21,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:06:21,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1276687758, now seen corresponding path program 24 times [2021-05-22 00:06:21,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:06:21,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699636270] [2021-05-22 00:06:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:06:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:06:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1607 backedges. 0 proven. 1607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:06:22,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:06:22,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699636270] [2021-05-22 00:06:22,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699636270] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:06:22,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344992456] [2021-05-22 00:06:22,032 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:06:22,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-05-22 00:06:22,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:06:22,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-22 00:06:22,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:06:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1607 backedges. 0 proven. 637 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-05-22 00:06:23,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344992456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:06:23,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:06:23,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 29] total 79 [2021-05-22 00:06:23,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44510959] [2021-05-22 00:06:23,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-22 00:06:23,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:06:23,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-22 00:06:23,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=976, Invalid=5186, Unknown=0, NotChecked=0, Total=6162 [2021-05-22 00:06:23,118 INFO L87 Difference]: Start difference. First operand 12698 states and 25354 transitions. Second operand has 79 states, 79 states have (on average 5.2784810126582276) internal successors, (417), 79 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-05-22 00:07:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 948 states. [2021-05-22 00:07:22,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-22 00:07:22,202 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:07:22,203 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-05-22 00:07:22,204 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 00:07:22,206 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:22,206 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:22,206 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:22,206 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:22,206 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:22,206 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:22,206 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:22,206 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:07:22,207 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 94 transitions, 196 flow [2021-05-22 00:07:22,207 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:07:22,207 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-05-22 00:07:22,207 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 00:07:22,209 WARN L196 ceAbstractionStarter]: Timeout [2021-05-22 00:07:22,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 12:07:22 BasicIcfg [2021-05-22 00:07:22,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 00:07:22,209 INFO L168 Benchmark]: Toolchain (without parser) took 725856.19 ms. Allocated memory was 379.6 MB in the beginning and 4.9 GB in the end (delta: 4.5 GB). Free memory was 340.7 MB in the beginning and 3.1 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.0 GB. [2021-05-22 00:07:22,209 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 379.6 MB. Free memory was 359.6 MB in the beginning and 359.6 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 00:07:22,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.75 ms. Allocated memory is still 379.6 MB. Free memory was 340.6 MB in the beginning and 288.6 MB in the end (delta: 51.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.0 GB. [2021-05-22 00:07:22,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 379.6 MB. Free memory was 288.6 MB in the beginning and 286.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:07:22,210 INFO L168 Benchmark]: Boogie Preprocessor took 28.91 ms. Allocated memory is still 379.6 MB. Free memory was 286.2 MB in the beginning and 284.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:07:22,210 INFO L168 Benchmark]: RCFGBuilder took 424.82 ms. Allocated memory is still 379.6 MB. Free memory was 284.5 MB in the beginning and 256.7 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-05-22 00:07:22,210 INFO L168 Benchmark]: TraceAbstraction took 724827.76 ms. Allocated memory was 379.6 MB in the beginning and 4.9 GB in the end (delta: 4.5 GB). Free memory was 255.9 MB in the beginning and 3.1 GB in the end (delta: -2.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. [2021-05-22 00:07:22,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 379.6 MB. Free memory was 359.6 MB in the beginning and 359.6 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 519.75 ms. Allocated memory is still 379.6 MB. Free memory was 340.6 MB in the beginning and 288.6 MB in the end (delta: 51.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 379.6 MB. Free memory was 288.6 MB in the beginning and 286.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.91 ms. Allocated memory is still 379.6 MB. Free memory was 286.2 MB in the beginning and 284.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 424.82 ms. Allocated memory is still 379.6 MB. Free memory was 284.5 MB in the beginning and 256.7 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 724827.76 ms. Allocated memory was 379.6 MB in the beginning and 4.9 GB in the end (delta: 4.5 GB). Free memory was 255.9 MB in the beginning and 3.1 GB in the end (delta: -2.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (12698states) and FLOYD_HOARE automaton (currently 948 states, 79 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1010 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 724744.4ms, OverallIterations: 27, TraceHistogramMax: 20, EmptinessCheckTime: 145.7ms, AutomataDifference: 696539.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2873 SDtfs, 214457 SDslu, 46977 SDs, 0 SdLazy, 8891 SolverSat, 39222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15104.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26116 GetRequests, 14608 SyntacticMatches, 0 SemanticMatches, 11507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6759662 ImplicationChecksByTransitivity, 635412.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12698occurred in iteration=26, InterpolantAutomatonStates: 10214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3484.1ms AutomataMinimizationTime, 26 MinimizatonAttempts, 610985 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 504.3ms SsaConstructionTime, 1527.0ms SatisfiabilityAnalysisTime, 15287.9ms InterpolantComputationTime, 8350 NumberOfCodeBlocks, 8245 NumberOfCodeBlocksAsserted, 186 NumberOfCheckSat, 8298 ConstructedInterpolants, 0 QuantifiedInterpolants, 14728 SizeOfPredicates, 396 NumberOfNonLiveVariables, 8505 ConjunctsInSsa, 446 ConjunctsInUnsatCore, 52 InterpolantComputations, 3 PerfectInterpolantSequences, 10544/28694 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown