/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:52:54,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:52:54,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:52:54,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:52:54,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 19:52:54,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 19:52:54,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 19:52:54,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 19:52:54,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:52:54,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:52:54,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:52:54,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:52:54,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:52:54,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:52:54,899 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:52:54,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:52:54,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:52:54,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:52:54,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:52:54,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:52:54,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:52:54,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:52:54,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:52:54,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:52:54,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:52:54,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:52:54,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:52:54,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:52:54,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:52:54,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:52:54,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:52:55,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:52:55,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:52:55,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:52:55,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:52:55,127 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:52:55,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-06-05 19:52:55,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63a56ce7/0cd2afd0be204b47b9deda6010d03929/FLAG07beae460 [2021-06-05 19:52:55,649 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:52:55,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-06-05 19:52:55,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63a56ce7/0cd2afd0be204b47b9deda6010d03929/FLAG07beae460 [2021-06-05 19:52:55,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63a56ce7/0cd2afd0be204b47b9deda6010d03929 [2021-06-05 19:52:55,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:52:55,681 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:52:55,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:52:55,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:52:55,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:52:55,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:52:55" (1/1) ... [2021-06-05 19:52:55,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9013ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:55, skipping insertion in model container [2021-06-05 19:52:55,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:52:55" (1/1) ... [2021-06-05 19:52:55,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:52:55,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:52:55,887 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/safe015_pso.oepc.i[950,963] [2021-06-05 19:52:56,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:52:56,022 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:52:56,030 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/safe015_pso.oepc.i[950,963] [2021-06-05 19:52:56,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:52:56,110 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:52:56,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56 WrapperNode [2021-06-05 19:52:56,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:52:56,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:52:56,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:52:56,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:52:56,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:52:56,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:52:56,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:52:56,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:52:56,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... [2021-06-05 19:52:56,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:52:56,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:52:56,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:52:56,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:52:56,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:52:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:52:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:52:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:52:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:52:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:52:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:52:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:52:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:52:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:52:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:52:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:52:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:52:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:52:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:52:56,221 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:52:56,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:52:56,476 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:52:56,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:52:56 BoogieIcfgContainer [2021-06-05 19:52:56,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:52:56,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:52:56,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:52:56,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:52:56,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:52:55" (1/3) ... [2021-06-05 19:52:56,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7259b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:52:56, skipping insertion in model container [2021-06-05 19:52:56,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:56" (2/3) ... [2021-06-05 19:52:56,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7259b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:52:56, skipping insertion in model container [2021-06-05 19:52:56,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:52:56" (3/3) ... [2021-06-05 19:52:56,482 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2021-06-05 19:52:56,486 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:52:56,486 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:52:56,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:52:56,487 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:52:56,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,506 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,509 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,509 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,512 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,512 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,513 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,513 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,516 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,516 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,516 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,517 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,518 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,518 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:56,520 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:52:56,541 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:52:56,562 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:52:56,563 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:52:56,563 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:52:56,563 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:52:56,563 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:52:56,563 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:52:56,563 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:52:56,563 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:52:56,574 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-05 19:52:57,021 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 19:52:57,081 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:57,082 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:57,082 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:57,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:57,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-06-05 19:52:57,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:57,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489249143] [2021-06-05 19:52:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:57,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:57,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489249143] [2021-06-05 19:52:57,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489249143] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:57,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:57,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:52:57,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250806016] [2021-06-05 19:52:57,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:52:57,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:57,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:52:57,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:52:57,429 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:57,815 INFO L93 Difference]: Finished difference Result 21088 states and 72805 transitions. [2021-06-05 19:52:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:57,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 19:52:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:57,918 INFO L225 Difference]: With dead ends: 21088 [2021-06-05 19:52:57,918 INFO L226 Difference]: Without dead ends: 7140 [2021-06-05 19:52:57,919 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-06-05 19:52:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6006. [2021-06-05 19:52:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6006 states, 6005 states have (on average 3.33488759367194) internal successors, (20026), 6005 states have internal predecessors, (20026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6006 states to 6006 states and 20026 transitions. [2021-06-05 19:52:58,194 INFO L78 Accepts]: Start accepts. Automaton has 6006 states and 20026 transitions. Word has length 48 [2021-06-05 19:52:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:58,197 INFO L482 AbstractCegarLoop]: Abstraction has 6006 states and 20026 transitions. [2021-06-05 19:52:58,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6006 states and 20026 transitions. [2021-06-05 19:52:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 19:52:58,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:58,213 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:58,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:52:58,214 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:58,216 INFO L82 PathProgramCache]: Analyzing trace with hash -396116582, now seen corresponding path program 1 times [2021-06-05 19:52:58,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:58,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843660454] [2021-06-05 19:52:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:58,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:58,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843660454] [2021-06-05 19:52:58,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843660454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:58,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:58,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:58,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023718838] [2021-06-05 19:52:58,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:58,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:58,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:58,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:58,386 INFO L87 Difference]: Start difference. First operand 6006 states and 20026 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:58,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:58,661 INFO L93 Difference]: Finished difference Result 8410 states and 27696 transitions. [2021-06-05 19:52:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:52:58,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-06-05 19:52:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:58,694 INFO L225 Difference]: With dead ends: 8410 [2021-06-05 19:52:58,694 INFO L226 Difference]: Without dead ends: 6474 [2021-06-05 19:52:58,696 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:52:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2021-06-05 19:52:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5338. [2021-06-05 19:52:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.3041034288926365) internal successors, (17634), 5337 states have internal predecessors, (17634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 17634 transitions. [2021-06-05 19:52:58,870 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 17634 transitions. Word has length 50 [2021-06-05 19:52:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:58,870 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 17634 transitions. [2021-06-05 19:52:58,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 17634 transitions. [2021-06-05 19:52:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 19:52:58,879 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:58,879 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:58,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:52:58,880 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1823781980, now seen corresponding path program 1 times [2021-06-05 19:52:58,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:58,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291203282] [2021-06-05 19:52:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:58,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:58,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291203282] [2021-06-05 19:52:58,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291203282] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:58,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:58,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:58,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148125488] [2021-06-05 19:52:58,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:58,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:58,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:58,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:58,965 INFO L87 Difference]: Start difference. First operand 5338 states and 17634 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:59,193 INFO L93 Difference]: Finished difference Result 7210 states and 23597 transitions. [2021-06-05 19:52:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:52:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-06-05 19:52:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:59,215 INFO L225 Difference]: With dead ends: 7210 [2021-06-05 19:52:59,216 INFO L226 Difference]: Without dead ends: 5886 [2021-06-05 19:52:59,216 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 172.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:52:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-06-05 19:52:59,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 4551. [2021-06-05 19:52:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 4550 states have (on average 3.291208791208791) internal successors, (14975), 4550 states have internal predecessors, (14975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 14975 transitions. [2021-06-05 19:52:59,321 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 14975 transitions. Word has length 51 [2021-06-05 19:52:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:59,322 INFO L482 AbstractCegarLoop]: Abstraction has 4551 states and 14975 transitions. [2021-06-05 19:52:59,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 14975 transitions. [2021-06-05 19:52:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 19:52:59,330 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:59,330 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:59,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:52:59,330 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:59,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1772356823, now seen corresponding path program 1 times [2021-06-05 19:52:59,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:59,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521916696] [2021-06-05 19:52:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:59,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:59,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521916696] [2021-06-05 19:52:59,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521916696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:59,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:59,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:52:59,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727117130] [2021-06-05 19:52:59,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:52:59,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:59,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:52:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:52:59,455 INFO L87 Difference]: Start difference. First operand 4551 states and 14975 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:59,543 INFO L93 Difference]: Finished difference Result 5143 states and 16830 transitions. [2021-06-05 19:52:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 19:52:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:59,555 INFO L225 Difference]: With dead ends: 5143 [2021-06-05 19:52:59,555 INFO L226 Difference]: Without dead ends: 4443 [2021-06-05 19:52:59,555 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2021-06-05 19:52:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4427. [2021-06-05 19:52:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.2790329868956167) internal successors, (14513), 4426 states have internal predecessors, (14513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14513 transitions. [2021-06-05 19:52:59,653 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14513 transitions. Word has length 52 [2021-06-05 19:52:59,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:59,653 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14513 transitions. [2021-06-05 19:52:59,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14513 transitions. [2021-06-05 19:52:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:52:59,662 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:59,662 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:59,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:52:59,662 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:59,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1730681128, now seen corresponding path program 1 times [2021-06-05 19:52:59,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:59,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749824022] [2021-06-05 19:52:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:59,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:59,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749824022] [2021-06-05 19:52:59,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749824022] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:59,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:59,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:59,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771759973] [2021-06-05 19:52:59,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:59,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:59,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:59,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:59,731 INFO L87 Difference]: Start difference. First operand 4427 states and 14513 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:59,974 INFO L93 Difference]: Finished difference Result 6233 states and 20189 transitions. [2021-06-05 19:52:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:52:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-06-05 19:52:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:59,987 INFO L225 Difference]: With dead ends: 6233 [2021-06-05 19:52:59,987 INFO L226 Difference]: Without dead ends: 5349 [2021-06-05 19:52:59,988 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 181.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:53:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-06-05 19:53:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4205. [2021-06-05 19:53:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2649857278782113) internal successors, (13726), 4204 states have internal predecessors, (13726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13726 transitions. [2021-06-05 19:53:00,083 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13726 transitions. Word has length 54 [2021-06-05 19:53:00,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:00,083 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13726 transitions. [2021-06-05 19:53:00,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13726 transitions. [2021-06-05 19:53:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:53:00,092 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:00,092 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:00,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:53:00,092 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:00,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:00,092 INFO L82 PathProgramCache]: Analyzing trace with hash 245526365, now seen corresponding path program 1 times [2021-06-05 19:53:00,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:00,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879677052] [2021-06-05 19:53:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:00,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:00,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879677052] [2021-06-05 19:53:00,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879677052] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:00,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:00,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:53:00,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952295916] [2021-06-05 19:53:00,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:53:00,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:53:00,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:53:00,159 INFO L87 Difference]: Start difference. First operand 4205 states and 13726 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:00,252 INFO L93 Difference]: Finished difference Result 7461 states and 24155 transitions. [2021-06-05 19:53:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:53:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-06-05 19:53:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:00,267 INFO L225 Difference]: With dead ends: 7461 [2021-06-05 19:53:00,267 INFO L226 Difference]: Without dead ends: 5277 [2021-06-05 19:53:00,268 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 19:53:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2021-06-05 19:53:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 4205. [2021-06-05 19:53:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2516650808753567) internal successors, (13670), 4204 states have internal predecessors, (13670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13670 transitions. [2021-06-05 19:53:00,402 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13670 transitions. Word has length 54 [2021-06-05 19:53:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:00,402 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13670 transitions. [2021-06-05 19:53:00,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13670 transitions. [2021-06-05 19:53:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:53:00,412 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:00,412 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:00,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:53:00,413 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash 192553753, now seen corresponding path program 2 times [2021-06-05 19:53:00,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:00,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972423898] [2021-06-05 19:53:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:00,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:00,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972423898] [2021-06-05 19:53:00,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972423898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:00,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:00,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:53:00,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639959378] [2021-06-05 19:53:00,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:53:00,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:00,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:53:00,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:53:00,487 INFO L87 Difference]: Start difference. First operand 4205 states and 13670 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:00,577 INFO L93 Difference]: Finished difference Result 5341 states and 17118 transitions. [2021-06-05 19:53:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 19:53:00,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-06-05 19:53:00,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:00,584 INFO L225 Difference]: With dead ends: 5341 [2021-06-05 19:53:00,584 INFO L226 Difference]: Without dead ends: 2597 [2021-06-05 19:53:00,585 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 19:53:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-06-05 19:53:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2405. [2021-06-05 19:53:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 3.074459234608985) internal successors, (7391), 2404 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 7391 transitions. [2021-06-05 19:53:00,635 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 7391 transitions. Word has length 54 [2021-06-05 19:53:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:00,635 INFO L482 AbstractCegarLoop]: Abstraction has 2405 states and 7391 transitions. [2021-06-05 19:53:00,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 7391 transitions. [2021-06-05 19:53:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:53:00,639 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:00,639 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:00,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:53:00,639 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:00,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:00,640 INFO L82 PathProgramCache]: Analyzing trace with hash -663113566, now seen corresponding path program 1 times [2021-06-05 19:53:00,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:00,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441395330] [2021-06-05 19:53:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:00,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:00,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441395330] [2021-06-05 19:53:00,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441395330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:00,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:00,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:53:00,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118150605] [2021-06-05 19:53:00,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:53:00,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:53:00,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:53:00,708 INFO L87 Difference]: Start difference. First operand 2405 states and 7391 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-06-05 19:53:00,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:00,795 INFO L93 Difference]: Finished difference Result 2882 states and 8749 transitions. [2021-06-05 19:53:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:53:00,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 [2021-06-05 19:53:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:00,801 INFO L225 Difference]: With dead ends: 2882 [2021-06-05 19:53:00,801 INFO L226 Difference]: Without dead ends: 2186 [2021-06-05 19:53:00,802 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:53:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2021-06-05 19:53:00,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2186. [2021-06-05 19:53:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 3.0187643020594965) internal successors, (6596), 2185 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 6596 transitions. [2021-06-05 19:53:00,840 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 6596 transitions. Word has length 55 [2021-06-05 19:53:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:00,840 INFO L482 AbstractCegarLoop]: Abstraction has 2186 states and 6596 transitions. [2021-06-05 19:53:00,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-06-05 19:53:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6596 transitions. [2021-06-05 19:53:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 19:53:00,859 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:00,860 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:00,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 19:53:00,860 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:00,860 INFO L82 PathProgramCache]: Analyzing trace with hash 328653495, now seen corresponding path program 1 times [2021-06-05 19:53:00,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:00,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785050999] [2021-06-05 19:53:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:00,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:00,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785050999] [2021-06-05 19:53:00,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785050999] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:00,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:00,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:53:00,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658502164] [2021-06-05 19:53:00,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:53:00,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:00,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:53:00,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:53:00,937 INFO L87 Difference]: Start difference. First operand 2186 states and 6596 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:01,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:01,021 INFO L93 Difference]: Finished difference Result 2123 states and 6230 transitions. [2021-06-05 19:53:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:53:01,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-06-05 19:53:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:01,024 INFO L225 Difference]: With dead ends: 2123 [2021-06-05 19:53:01,024 INFO L226 Difference]: Without dead ends: 1571 [2021-06-05 19:53:01,024 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:53:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-06-05 19:53:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2021-06-05 19:53:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 2.875796178343949) internal successors, (4515), 1570 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 4515 transitions. [2021-06-05 19:53:01,045 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 4515 transitions. Word has length 56 [2021-06-05 19:53:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:01,045 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 4515 transitions. [2021-06-05 19:53:01,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 4515 transitions. [2021-06-05 19:53:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 19:53:01,047 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:01,047 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:01,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 19:53:01,048 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:01,048 INFO L82 PathProgramCache]: Analyzing trace with hash -372773896, now seen corresponding path program 1 times [2021-06-05 19:53:01,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:01,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410267476] [2021-06-05 19:53:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:01,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:01,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410267476] [2021-06-05 19:53:01,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410267476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:01,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:01,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:53:01,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987438007] [2021-06-05 19:53:01,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:53:01,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:01,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:53:01,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:53:01,102 INFO L87 Difference]: Start difference. First operand 1571 states and 4515 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:01,162 INFO L93 Difference]: Finished difference Result 1139 states and 3192 transitions. [2021-06-05 19:53:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 19:53:01,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-06-05 19:53:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:01,163 INFO L225 Difference]: With dead ends: 1139 [2021-06-05 19:53:01,163 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:53:01,163 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:53:01,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:53:01,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:53:01,163 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) [2021-06-05 19:53:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:53:01,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-06-05 19:53:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:01,164 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:53:01,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:53:01,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:53:01,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 19:53:01,165 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:53:01,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:53:01 BasicIcfg [2021-06-05 19:53:01,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:53:01,167 INFO L168 Benchmark]: Toolchain (without parser) took 5486.15 ms. Allocated memory was 323.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 285.3 MB in the beginning and 1.2 GB in the end (delta: -935.5 MB). Peak memory consumption was 227.6 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:01,168 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 323.0 MB. Free memory is still 303.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:53:01,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.16 ms. Allocated memory is still 323.0 MB. Free memory was 285.2 MB in the beginning and 283.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:01,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.77 ms. Allocated memory is still 323.0 MB. Free memory was 283.8 MB in the beginning and 281.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:01,168 INFO L168 Benchmark]: Boogie Preprocessor took 14.33 ms. Allocated memory is still 323.0 MB. Free memory was 281.8 MB in the beginning and 280.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:53:01,168 INFO L168 Benchmark]: RCFGBuilder took 325.77 ms. Allocated memory is still 323.0 MB. Free memory was 280.7 MB in the beginning and 254.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:01,169 INFO L168 Benchmark]: TraceAbstraction took 4688.76 ms. Allocated memory was 323.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 254.5 MB in the beginning and 1.2 GB in the end (delta: -966.4 MB). Peak memory consumption was 197.6 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:01,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 323.0 MB. Free memory is still 303.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 428.16 ms. Allocated memory is still 323.0 MB. Free memory was 285.2 MB in the beginning and 283.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.77 ms. Allocated memory is still 323.0 MB. Free memory was 283.8 MB in the beginning and 281.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.33 ms. Allocated memory is still 323.0 MB. Free memory was 281.8 MB in the beginning and 280.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 325.77 ms. Allocated memory is still 323.0 MB. Free memory was 280.7 MB in the beginning and 254.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4688.76 ms. Allocated memory was 323.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 254.5 MB in the beginning and 1.2 GB in the end (delta: -966.4 MB). Peak memory consumption was 197.6 MB. 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4603.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 141.6ms, AutomataDifference: 1892.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 457.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1120 SDtfs, 1710 SDslu, 3821 SDs, 0 SdLazy, 493 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 356.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1024.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 980.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 6029 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.7ms SsaConstructionTime, 119.7ms SatisfiabilityAnalysisTime, 846.3ms InterpolantComputationTime, 532 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 2698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...