/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-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:36:09,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:36:09,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:36:09,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:36:10,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:36:10,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:36:10,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:36:10,039 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 23:36:10,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:36:10,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:36:10,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:36:10,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:36:10,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:36:10,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:36:10,060 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:36:10,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:36:10,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:36:10,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:36:10,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:36:10,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:36:10,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:36:10,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:36:10,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:36:10,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:36:10,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:36:10,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:36:10,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:36:10,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:36:10,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:36:10,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:36:10,063 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:36:10,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:36:10,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:36:10,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:36:10,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:36:10,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:36:10,342 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:36:10,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-05-21 23:36:10,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287acb298/dfd941acc43841b793132297bfa38c4e/FLAGf32540b13 [2021-05-21 23:36:10,805 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:36:10,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-05-21 23:36:10,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287acb298/dfd941acc43841b793132297bfa38c4e/FLAGf32540b13 [2021-05-21 23:36:10,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287acb298/dfd941acc43841b793132297bfa38c4e [2021-05-21 23:36:10,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:36:10,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:36:10,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:36:10,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:36:10,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:36:10,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:36:10" (1/1) ... [2021-05-21 23:36:10,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6548af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:10, skipping insertion in model container [2021-05-21 23:36:10,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:36:10" (1/1) ... [2021-05-21 23:36:10,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:36:10,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:36:11,056 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-wmm/safe016_pso.oepc.i[950,963] [2021-05-21 23:36:11,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:36:11,185 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:36:11,193 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-wmm/safe016_pso.oepc.i[950,963] [2021-05-21 23:36:11,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:36:11,282 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:36:11,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11 WrapperNode [2021-05-21 23:36:11,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:36:11,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:36:11,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:36:11,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:36:11,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:36:11,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:36:11,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:36:11,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:36:11,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (1/1) ... [2021-05-21 23:36:11,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:36:11,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:36:11,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:36:11,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:36:11,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (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 23:36:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:36:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:36:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:36:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:36:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:36:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:36:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:36:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:36:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:36:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:36:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-05-21 23:36:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-05-21 23:36:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:36:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:36:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:36:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:36:11,426 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 23:36:11,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:36:11,777 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:36:11,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:36:11 BoogieIcfgContainer [2021-05-21 23:36:11,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:36:11,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:36:11,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:36:11,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:36:11,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:36:10" (1/3) ... [2021-05-21 23:36:11,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bf46ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:36:11, skipping insertion in model container [2021-05-21 23:36:11,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:36:11" (2/3) ... [2021-05-21 23:36:11,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bf46ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:36:11, skipping insertion in model container [2021-05-21 23:36:11,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:36:11" (3/3) ... [2021-05-21 23:36:11,785 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-05-21 23:36:11,789 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:36:11,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:36:11,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:36:11,789 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:36:11,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,828 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,828 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,830 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,831 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,832 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,832 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,833 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,834 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,834 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,834 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,841 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,841 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:36:11,843 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:36:11,856 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:36:11,867 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:36:11,867 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:36:11,867 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:36:11,867 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:36:11,867 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:36:11,867 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:36:11,867 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:36:11,867 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:36:11,874 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 97 transitions, 214 flow [2021-05-21 23:36:16,743 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 51814 states, 51812 states have (on average 4.368717671581873) internal successors, (226352), 51813 states have internal predecessors, (226352), 0 states have call successors, (0), 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 23:36:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 51814 states, 51812 states have (on average 4.368717671581873) internal successors, (226352), 51813 states have internal predecessors, (226352), 0 states have call successors, (0), 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 23:36:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 23:36:16,862 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:16,863 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] [2021-05-21 23:36:16,863 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:16,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:16,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1675625032, now seen corresponding path program 1 times [2021-05-21 23:36:16,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:16,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633322369] [2021-05-21 23:36:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:17,218 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 23:36:17,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:17,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633322369] [2021-05-21 23:36:17,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633322369] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:17,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:17,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:36:17,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568828997] [2021-05-21 23:36:17,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:36:17,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:17,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:36:17,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:36:17,302 INFO L87 Difference]: Start difference. First operand has 51814 states, 51812 states have (on average 4.368717671581873) internal successors, (226352), 51813 states have internal predecessors, (226352), 0 states have call successors, (0), 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 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 23:36:18,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:18,691 INFO L93 Difference]: Finished difference Result 115618 states and 491448 transitions. [2021-05-21 23:36:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 23:36:18,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-05-21 23:36:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:19,132 INFO L225 Difference]: With dead ends: 115618 [2021-05-21 23:36:19,133 INFO L226 Difference]: Without dead ends: 36814 [2021-05-21 23:36:19,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 196.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:36:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36814 states. [2021-05-21 23:36:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36814 to 30478. [2021-05-21 23:36:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30478 states, 30477 states have (on average 4.128884076516718) internal successors, (125836), 30477 states have internal predecessors, (125836), 0 states have call successors, (0), 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 23:36:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30478 states to 30478 states and 125836 transitions. [2021-05-21 23:36:20,489 INFO L78 Accepts]: Start accepts. Automaton has 30478 states and 125836 transitions. Word has length 55 [2021-05-21 23:36:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:20,490 INFO L482 AbstractCegarLoop]: Abstraction has 30478 states and 125836 transitions. [2021-05-21 23:36:20,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 23:36:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 30478 states and 125836 transitions. [2021-05-21 23:36:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 23:36:20,536 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:20,536 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] [2021-05-21 23:36:20,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:36:20,537 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash -728552423, now seen corresponding path program 1 times [2021-05-21 23:36:20,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:20,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449200445] [2021-05-21 23:36:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:20,651 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 23:36:20,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:20,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449200445] [2021-05-21 23:36:20,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449200445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:20,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:20,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:36:20,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624271911] [2021-05-21 23:36:20,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:36:20,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:36:20,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:36:20,655 INFO L87 Difference]: Start difference. First operand 30478 states and 125836 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 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 23:36:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:21,253 INFO L93 Difference]: Finished difference Result 45766 states and 187560 transitions. [2021-05-21 23:36:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 23:36:21,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-05-21 23:36:21,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:21,405 INFO L225 Difference]: With dead ends: 45766 [2021-05-21 23:36:21,405 INFO L226 Difference]: Without dead ends: 36694 [2021-05-21 23:36:21,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 130.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:36:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36694 states. [2021-05-21 23:36:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36694 to 29230. [2021-05-21 23:36:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29230 states, 29229 states have (on average 4.115022751377057) internal successors, (120278), 29229 states have internal predecessors, (120278), 0 states have call successors, (0), 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 23:36:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29230 states to 29230 states and 120278 transitions. [2021-05-21 23:36:22,597 INFO L78 Accepts]: Start accepts. Automaton has 29230 states and 120278 transitions. Word has length 57 [2021-05-21 23:36:22,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:22,597 INFO L482 AbstractCegarLoop]: Abstraction has 29230 states and 120278 transitions. [2021-05-21 23:36:22,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 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 23:36:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 29230 states and 120278 transitions. [2021-05-21 23:36:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-21 23:36:22,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:22,640 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] [2021-05-21 23:36:22,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:36:22,641 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:22,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1714446202, now seen corresponding path program 1 times [2021-05-21 23:36:22,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:22,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340318837] [2021-05-21 23:36:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:22,754 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 23:36:22,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:22,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340318837] [2021-05-21 23:36:22,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340318837] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:22,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:22,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:36:22,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911902262] [2021-05-21 23:36:22,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:36:22,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:22,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:36:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:36:22,758 INFO L87 Difference]: Start difference. First operand 29230 states and 120278 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 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 23:36:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:23,465 INFO L93 Difference]: Finished difference Result 50986 states and 207167 transitions. [2021-05-21 23:36:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 23:36:23,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-05-21 23:36:23,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:23,576 INFO L225 Difference]: With dead ends: 50986 [2021-05-21 23:36:23,577 INFO L226 Difference]: Without dead ends: 29028 [2021-05-21 23:36:23,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:36:23,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29028 states. [2021-05-21 23:36:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29028 to 24052. [2021-05-21 23:36:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24052 states, 24051 states have (on average 4.042576192258118) internal successors, (97228), 24051 states have internal predecessors, (97228), 0 states have call successors, (0), 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 23:36:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24052 states to 24052 states and 97228 transitions. [2021-05-21 23:36:24,370 INFO L78 Accepts]: Start accepts. Automaton has 24052 states and 97228 transitions. Word has length 59 [2021-05-21 23:36:24,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:24,370 INFO L482 AbstractCegarLoop]: Abstraction has 24052 states and 97228 transitions. [2021-05-21 23:36:24,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 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 23:36:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 24052 states and 97228 transitions. [2021-05-21 23:36:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:36:24,406 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:24,406 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 23:36:24,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:36:24,407 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:24,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1714578911, now seen corresponding path program 1 times [2021-05-21 23:36:24,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:24,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556203715] [2021-05-21 23:36:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:24,483 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 23:36:24,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:24,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556203715] [2021-05-21 23:36:24,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556203715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:24,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:24,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:36:24,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748412858] [2021-05-21 23:36:24,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:36:24,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:24,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:36:24,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:36:24,485 INFO L87 Difference]: Start difference. First operand 24052 states and 97228 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 23:36:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:24,668 INFO L93 Difference]: Finished difference Result 25332 states and 102012 transitions. [2021-05-21 23:36:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:36:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 23:36:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:24,732 INFO L225 Difference]: With dead ends: 25332 [2021-05-21 23:36:24,732 INFO L226 Difference]: Without dead ends: 23092 [2021-05-21 23:36:24,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:36:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23092 states. [2021-05-21 23:36:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23092 to 22068. [2021-05-21 23:36:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22068 states, 22067 states have (on average 4.027552453890425) internal successors, (88876), 22067 states have internal predecessors, (88876), 0 states have call successors, (0), 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 23:36:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22068 states to 22068 states and 88876 transitions. [2021-05-21 23:36:25,407 INFO L78 Accepts]: Start accepts. Automaton has 22068 states and 88876 transitions. Word has length 61 [2021-05-21 23:36:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:25,408 INFO L482 AbstractCegarLoop]: Abstraction has 22068 states and 88876 transitions. [2021-05-21 23:36:25,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 23:36:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22068 states and 88876 transitions. [2021-05-21 23:36:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-21 23:36:25,441 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:25,441 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] [2021-05-21 23:36:25,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:36:25,441 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:25,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1579705773, now seen corresponding path program 1 times [2021-05-21 23:36:25,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:25,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855664023] [2021-05-21 23:36:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:25,520 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 23:36:25,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:25,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855664023] [2021-05-21 23:36:25,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855664023] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:25,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:25,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:36:25,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197490246] [2021-05-21 23:36:25,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:36:25,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:36:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:36:25,522 INFO L87 Difference]: Start difference. First operand 22068 states and 88876 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 23:36:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:26,059 INFO L93 Difference]: Finished difference Result 46036 states and 181948 transitions. [2021-05-21 23:36:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 23:36:26,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-05-21 23:36:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:26,117 INFO L225 Difference]: With dead ends: 46036 [2021-05-21 23:36:26,117 INFO L226 Difference]: Without dead ends: 21276 [2021-05-21 23:36:26,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-05-21 23:36:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21276 states. [2021-05-21 23:36:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21276 to 16412. [2021-05-21 23:36:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16412 states, 16411 states have (on average 3.888245688867223) internal successors, (63810), 16411 states have internal predecessors, (63810), 0 states have call successors, (0), 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 23:36:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16412 states to 16412 states and 63810 transitions. [2021-05-21 23:36:26,498 INFO L78 Accepts]: Start accepts. Automaton has 16412 states and 63810 transitions. Word has length 62 [2021-05-21 23:36:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:26,498 INFO L482 AbstractCegarLoop]: Abstraction has 16412 states and 63810 transitions. [2021-05-21 23:36:26,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 23:36:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16412 states and 63810 transitions. [2021-05-21 23:36:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-21 23:36:26,523 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:26,523 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] [2021-05-21 23:36:26,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:36:26,523 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1358272108, now seen corresponding path program 1 times [2021-05-21 23:36:26,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:26,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525431524] [2021-05-21 23:36:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:26,755 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2021-05-21 23:36:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:36:26,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:26,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525431524] [2021-05-21 23:36:26,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525431524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:26,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:26,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:36:26,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425822744] [2021-05-21 23:36:26,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:36:26,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:26,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:36:26,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:36:26,779 INFO L87 Difference]: Start difference. First operand 16412 states and 63810 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 23:36:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:27,043 INFO L93 Difference]: Finished difference Result 25564 states and 98786 transitions. [2021-05-21 23:36:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 23:36:27,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-05-21 23:36:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:27,093 INFO L225 Difference]: With dead ends: 25564 [2021-05-21 23:36:27,093 INFO L226 Difference]: Without dead ends: 19804 [2021-05-21 23:36:27,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 295.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:36:27,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19804 states. [2021-05-21 23:36:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19804 to 15084. [2021-05-21 23:36:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15084 states, 15083 states have (on average 3.872571769541868) internal successors, (58410), 15083 states have internal predecessors, (58410), 0 states have call successors, (0), 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 23:36:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15084 states to 15084 states and 58410 transitions. [2021-05-21 23:36:27,484 INFO L78 Accepts]: Start accepts. Automaton has 15084 states and 58410 transitions. Word has length 62 [2021-05-21 23:36:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:27,484 INFO L482 AbstractCegarLoop]: Abstraction has 15084 states and 58410 transitions. [2021-05-21 23:36:27,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 23:36:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 15084 states and 58410 transitions. [2021-05-21 23:36:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-21 23:36:27,509 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:27,509 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] [2021-05-21 23:36:27,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:36:27,510 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:27,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1753261216, now seen corresponding path program 1 times [2021-05-21 23:36:27,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:27,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536183131] [2021-05-21 23:36:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:27,575 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 23:36:27,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:27,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536183131] [2021-05-21 23:36:27,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536183131] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:27,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:27,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:36:27,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106070180] [2021-05-21 23:36:27,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:36:27,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:27,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:36:27,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:36:27,577 INFO L87 Difference]: Start difference. First operand 15084 states and 58410 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:36:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:27,732 INFO L93 Difference]: Finished difference Result 20124 states and 76962 transitions. [2021-05-21 23:36:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:36:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-05-21 23:36:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:27,930 INFO L225 Difference]: With dead ends: 20124 [2021-05-21 23:36:27,931 INFO L226 Difference]: Without dead ends: 9479 [2021-05-21 23:36:27,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:36:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9479 states. [2021-05-21 23:36:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9479 to 9479. [2021-05-21 23:36:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9479 states, 9478 states have (on average 3.8269677147077443) internal successors, (36272), 9478 states have internal predecessors, (36272), 0 states have call successors, (0), 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 23:36:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9479 states to 9479 states and 36272 transitions. [2021-05-21 23:36:28,091 INFO L78 Accepts]: Start accepts. Automaton has 9479 states and 36272 transitions. Word has length 63 [2021-05-21 23:36:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:28,091 INFO L482 AbstractCegarLoop]: Abstraction has 9479 states and 36272 transitions. [2021-05-21 23:36:28,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:36:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9479 states and 36272 transitions. [2021-05-21 23:36:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-21 23:36:28,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:28,104 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] [2021-05-21 23:36:28,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 23:36:28,104 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:28,105 INFO L82 PathProgramCache]: Analyzing trace with hash 261023848, now seen corresponding path program 2 times [2021-05-21 23:36:28,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:28,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923141679] [2021-05-21 23:36:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:28,157 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 23:36:28,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:28,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923141679] [2021-05-21 23:36:28,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923141679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:28,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:28,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:36:28,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621027962] [2021-05-21 23:36:28,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:36:28,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:28,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:36:28,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:36:28,158 INFO L87 Difference]: Start difference. First operand 9479 states and 36272 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:36:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:28,281 INFO L93 Difference]: Finished difference Result 12330 states and 46729 transitions. [2021-05-21 23:36:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:36:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-05-21 23:36:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:28,302 INFO L225 Difference]: With dead ends: 12330 [2021-05-21 23:36:28,302 INFO L226 Difference]: Without dead ends: 9130 [2021-05-21 23:36:28,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:36:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9130 states. [2021-05-21 23:36:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9130 to 9130. [2021-05-21 23:36:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9130 states, 9129 states have (on average 3.8041406506736775) internal successors, (34728), 9129 states have internal predecessors, (34728), 0 states have call successors, (0), 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 23:36:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9130 states to 9130 states and 34728 transitions. [2021-05-21 23:36:28,463 INFO L78 Accepts]: Start accepts. Automaton has 9130 states and 34728 transitions. Word has length 63 [2021-05-21 23:36:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:28,463 INFO L482 AbstractCegarLoop]: Abstraction has 9130 states and 34728 transitions. [2021-05-21 23:36:28,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:36:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 9130 states and 34728 transitions. [2021-05-21 23:36:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-21 23:36:28,476 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:28,477 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] [2021-05-21 23:36:28,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 23:36:28,477 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:28,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1335715918, now seen corresponding path program 1 times [2021-05-21 23:36:28,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:28,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074098328] [2021-05-21 23:36:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:28,543 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 23:36:28,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:28,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074098328] [2021-05-21 23:36:28,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074098328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:28,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:28,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:36:28,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683130631] [2021-05-21 23:36:28,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:36:28,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:36:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:36:28,545 INFO L87 Difference]: Start difference. First operand 9130 states and 34728 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 23:36:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:28,683 INFO L93 Difference]: Finished difference Result 10600 states and 39578 transitions. [2021-05-21 23:36:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:36:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-05-21 23:36:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:28,701 INFO L225 Difference]: With dead ends: 10600 [2021-05-21 23:36:28,701 INFO L226 Difference]: Without dead ends: 7660 [2021-05-21 23:36:28,701 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 72.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:36:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7660 states. [2021-05-21 23:36:28,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7660 to 7660. [2021-05-21 23:36:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7660 states, 7659 states have (on average 3.7181094137615878) internal successors, (28477), 7659 states have internal predecessors, (28477), 0 states have call successors, (0), 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 23:36:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7660 states to 7660 states and 28477 transitions. [2021-05-21 23:36:28,931 INFO L78 Accepts]: Start accepts. Automaton has 7660 states and 28477 transitions. Word has length 64 [2021-05-21 23:36:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:28,931 INFO L482 AbstractCegarLoop]: Abstraction has 7660 states and 28477 transitions. [2021-05-21 23:36:28,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 23:36:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 7660 states and 28477 transitions. [2021-05-21 23:36:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-21 23:36:28,941 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:28,941 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] [2021-05-21 23:36:28,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 23:36:28,941 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:28,942 INFO L82 PathProgramCache]: Analyzing trace with hash 530155275, now seen corresponding path program 1 times [2021-05-21 23:36:28,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:28,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376537667] [2021-05-21 23:36:28,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:29,010 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 23:36:29,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:29,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376537667] [2021-05-21 23:36:29,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376537667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:29,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:29,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:36:29,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222950680] [2021-05-21 23:36:29,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:36:29,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:29,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:36:29,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:36:29,011 INFO L87 Difference]: Start difference. First operand 7660 states and 28477 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:36:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:29,151 INFO L93 Difference]: Finished difference Result 7003 states and 25387 transitions. [2021-05-21 23:36:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 23:36:29,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-05-21 23:36:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:29,161 INFO L225 Difference]: With dead ends: 7003 [2021-05-21 23:36:29,161 INFO L226 Difference]: Without dead ends: 4591 [2021-05-21 23:36:29,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:36:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2021-05-21 23:36:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4591. [2021-05-21 23:36:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4591 states, 4590 states have (on average 3.555773420479303) internal successors, (16321), 4590 states have internal predecessors, (16321), 0 states have call successors, (0), 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 23:36:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 16321 transitions. [2021-05-21 23:36:29,235 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 16321 transitions. Word has length 65 [2021-05-21 23:36:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:29,235 INFO L482 AbstractCegarLoop]: Abstraction has 4591 states and 16321 transitions. [2021-05-21 23:36:29,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:36:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 16321 transitions. [2021-05-21 23:36:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-21 23:36:29,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:29,241 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] [2021-05-21 23:36:29,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 23:36:29,241 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:29,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash -59477818, now seen corresponding path program 1 times [2021-05-21 23:36:29,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:29,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767237797] [2021-05-21 23:36:29,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:29,329 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 23:36:29,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:29,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767237797] [2021-05-21 23:36:29,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767237797] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:29,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:29,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:36:29,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976724234] [2021-05-21 23:36:29,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:36:29,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:29,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:36:29,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:36:29,334 INFO L87 Difference]: Start difference. First operand 4591 states and 16321 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:36:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:29,417 INFO L93 Difference]: Finished difference Result 5944 states and 20931 transitions. [2021-05-21 23:36:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:36:29,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-05-21 23:36:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:29,427 INFO L225 Difference]: With dead ends: 5944 [2021-05-21 23:36:29,427 INFO L226 Difference]: Without dead ends: 4869 [2021-05-21 23:36:29,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-05-21 23:36:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2021-05-21 23:36:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4383. [2021-05-21 23:36:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 4382 states have (on average 3.543815609310817) internal successors, (15529), 4382 states have internal predecessors, (15529), 0 states have call successors, (0), 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 23:36:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 15529 transitions. [2021-05-21 23:36:29,496 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 15529 transitions. Word has length 67 [2021-05-21 23:36:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:29,496 INFO L482 AbstractCegarLoop]: Abstraction has 4383 states and 15529 transitions. [2021-05-21 23:36:29,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:36:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 15529 transitions. [2021-05-21 23:36:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-21 23:36:29,502 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:36:29,502 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, 1, 1, 1, 1, 1, 1] [2021-05-21 23:36:29,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 23:36:29,502 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:36:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:36:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1749123924, now seen corresponding path program 2 times [2021-05-21 23:36:29,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:36:29,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766543610] [2021-05-21 23:36:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:36:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:36:29,582 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 23:36:29,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:36:29,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766543610] [2021-05-21 23:36:29,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766543610] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:36:29,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:36:29,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 23:36:29,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568444213] [2021-05-21 23:36:29,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 23:36:29,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:36:29,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 23:36:29,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-21 23:36:29,583 INFO L87 Difference]: Start difference. First operand 4383 states and 15529 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:36:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:36:29,680 INFO L93 Difference]: Finished difference Result 3087 states and 10696 transitions. [2021-05-21 23:36:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:36:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-05-21 23:36:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:36:29,680 INFO L225 Difference]: With dead ends: 3087 [2021-05-21 23:36:29,680 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:36:29,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:36:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:36:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:36:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 23:36:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:36:29,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2021-05-21 23:36:29,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:36:29,681 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:36:29,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:36:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:36:29,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:36:29,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 23:36:29,682 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:36:29,683 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 23:36:29,686 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:36:29,686 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:36:29,686 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:36:29,686 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:36:29,686 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:36:29,686 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:36:29,686 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:36:29,686 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:36:29,687 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 97 transitions, 214 flow [2021-05-21 23:36:34,247 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 51814 states, 51812 states have (on average 4.368717671581873) internal successors, (226352), 51813 states have internal predecessors, (226352), 0 states have call successors, (0), 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 23:36:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 51814 states, 51812 states have (on average 4.368717671581873) internal successors, (226352), 51813 states have internal predecessors, (226352), 0 states have call successors, (0), 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 23:36:34,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:36:34,427 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:36:34,427 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:36:34,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:36:34 BasicIcfg [2021-05-21 23:36:34,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:36:34,429 INFO L168 Benchmark]: Toolchain (without parser) took 23597.62 ms. Allocated memory was 346.0 MB in the beginning and 10.6 GB in the end (delta: 10.2 GB). Free memory was 308.4 MB in the beginning and 8.7 GB in the end (delta: -8.4 GB). Peak memory consumption was 1.9 GB. Max. memory is 16.0 GB. [2021-05-21 23:36:34,429 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 326.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:36:34,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.28 ms. Allocated memory is still 346.0 MB. Free memory was 308.2 MB in the beginning and 307.7 MB in the end (delta: 534.2 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-05-21 23:36:34,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 346.0 MB. Free memory was 307.7 MB in the beginning and 305.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:36:34,430 INFO L168 Benchmark]: Boogie Preprocessor took 25.99 ms. Allocated memory is still 346.0 MB. Free memory was 305.6 MB in the beginning and 303.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:36:34,430 INFO L168 Benchmark]: RCFGBuilder took 423.64 ms. Allocated memory is still 346.0 MB. Free memory was 303.5 MB in the beginning and 277.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-05-21 23:36:34,430 INFO L168 Benchmark]: TraceAbstraction took 22647.36 ms. Allocated memory was 346.0 MB in the beginning and 10.6 GB in the end (delta: 10.2 GB). Free memory was 277.3 MB in the beginning and 8.7 GB in the end (delta: -8.4 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.0 GB. [2021-05-21 23:36:34,431 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 346.0 MB. Free memory is still 326.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 450.28 ms. Allocated memory is still 346.0 MB. Free memory was 308.2 MB in the beginning and 307.7 MB in the end (delta: 534.2 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 346.0 MB. Free memory was 307.7 MB in the beginning and 305.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.99 ms. Allocated memory is still 346.0 MB. Free memory was 305.6 MB in the beginning and 303.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 423.64 ms. Allocated memory is still 346.0 MB. Free memory was 303.5 MB in the beginning and 277.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 22647.36 ms. Allocated memory was 346.0 MB in the beginning and 10.6 GB in the end (delta: 10.2 GB). Free memory was 277.3 MB in the beginning and 8.7 GB in the end (delta: -8.4 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 126 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17816.4ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 371.0ms, AutomataDifference: 5648.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4876.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1609 SDtfs, 2769 SDslu, 5755 SDs, 0 SdLazy, 557 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 378.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1370.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51814occurred in iteration=0, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5464.1ms AutomataMinimizationTime, 12 MinimizatonAttempts, 29870 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.4ms SsaConstructionTime, 180.7ms SatisfiabilityAnalysisTime, 1106.3ms InterpolantComputationTime, 745 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 733 ConstructedInterpolants, 0 QuantifiedInterpolants, 3263 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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 9 procedures, 126 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4740.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 179.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4561.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51814occurred in iteration=0, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...