/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:13:42,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:13:42,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:13:42,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:13:42,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:13:42,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:13:42,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:13:42,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:13:42,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:13:42,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:13:42,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:13:42,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:13:42,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:13:42,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:13:42,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:13:42,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:13:42,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:13:42,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:13:42,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:13:42,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:13:42,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:13:42,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:13:42,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:13:42,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:13:42,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:13:42,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:13:42,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:13:42,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:13:42,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:13:42,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:13:42,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:13:42,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:13:42,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:13:42,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:13:42,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:13:42,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:13:42,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:13:42,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:13:42,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:13:42,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:13:42,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:13:42,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 23:13:42,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:13:42,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:13:42,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:13:42,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:13:42,863 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:13:42,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:13:42,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:13:42,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:13:42,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:13:42,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:13:42,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:13:42,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:13:42,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:13:42,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:13:42,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:13:42,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:13:42,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:13:42,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:13:42,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:13:42,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:13:42,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:13:42,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:13:42,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:13:42,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:13:42,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:13:42,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:13:42,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:13:42,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:13:42,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:13:42,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:13:43,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:13:43,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:13:43,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:13:43,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:13:43,340 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:13:43,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-16 23:13:43,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58321f03/623490be5da54c1bb8cdc34ac80a8dff/FLAG24f338ed6 [2020-09-16 23:13:44,064 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:13:44,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-16 23:13:44,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58321f03/623490be5da54c1bb8cdc34ac80a8dff/FLAG24f338ed6 [2020-09-16 23:13:44,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58321f03/623490be5da54c1bb8cdc34ac80a8dff [2020-09-16 23:13:44,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:13:44,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:13:44,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:13:44,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:13:44,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:13:44,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:13:44" (1/1) ... [2020-09-16 23:13:44,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231943fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:44, skipping insertion in model container [2020-09-16 23:13:44,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:13:44" (1/1) ... [2020-09-16 23:13:44,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:13:44,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:13:44,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:13:44,955 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:13:45,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:13:45,108 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:13:45,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45 WrapperNode [2020-09-16 23:13:45,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:13:45,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:13:45,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:13:45,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:13:45,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:13:45,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:13:45,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:13:45,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:13:45,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (1/1) ... [2020-09-16 23:13:45,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:13:45,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:13:45,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:13:45,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:13:45,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (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 [2020-09-16 23:13:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:13:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:13:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:13:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:13:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:13:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:13:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:13:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:13:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:13:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:13:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:13:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:13:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:13:45,307 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:13:45,673 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:13:45,673 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:13:45,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:13:45 BoogieIcfgContainer [2020-09-16 23:13:45,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:13:45,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:13:45,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:13:45,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:13:45,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:13:44" (1/3) ... [2020-09-16 23:13:45,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:13:45, skipping insertion in model container [2020-09-16 23:13:45,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:13:45" (2/3) ... [2020-09-16 23:13:45,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:13:45, skipping insertion in model container [2020-09-16 23:13:45,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:13:45" (3/3) ... [2020-09-16 23:13:45,689 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-09-16 23:13:45,700 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:13:45,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:13:45,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:13:45,711 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:13:45,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,744 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,744 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,768 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,769 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,769 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,769 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,772 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,773 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:13:45,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:13:45,828 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:13:45,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:13:45,828 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:13:45,828 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:13:45,829 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:13:45,829 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:13:45,829 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:13:45,829 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:13:45,849 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-16 23:13:45,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 23:13:45,906 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 23:13:45,906 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:13:45,917 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:13:45,922 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 23:13:45,961 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 23:13:45,961 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:13:45,963 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:13:45,965 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 23:13:45,968 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:13:47,669 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-16 23:13:47,670 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-16 23:13:47,675 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-16 23:13:47,703 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 23:13:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 23:13:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:13:47,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:47,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:47,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:47,724 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-16 23:13:47,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:47,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678343927] [2020-09-16 23:13:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:48,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678343927] [2020-09-16 23:13:48,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:48,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:13:48,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035065789] [2020-09-16 23:13:48,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:13:48,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:48,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:13:48,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:48,030 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 23:13:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:48,093 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-16 23:13:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:13:48,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 23:13:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:48,116 INFO L225 Difference]: With dead ends: 282 [2020-09-16 23:13:48,116 INFO L226 Difference]: Without dead ends: 218 [2020-09-16 23:13:48,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-16 23:13:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-16 23:13:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-16 23:13:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-16 23:13:48,194 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-16 23:13:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:48,195 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-16 23:13:48,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:13:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-16 23:13:48,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:13:48,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:48,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:48,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:13:48,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:48,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:48,198 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-09-16 23:13:48,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:48,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939546027] [2020-09-16 23:13:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:48,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939546027] [2020-09-16 23:13:48,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:48,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:13:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419227405] [2020-09-16 23:13:48,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:13:48,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:48,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:13:48,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:13:48,335 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-16 23:13:48,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:48,375 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-09-16 23:13:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:13:48,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 23:13:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:48,378 INFO L225 Difference]: With dead ends: 296 [2020-09-16 23:13:48,378 INFO L226 Difference]: Without dead ends: 200 [2020-09-16 23:13:48,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:13:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-16 23:13:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-09-16 23:13:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-16 23:13:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-09-16 23:13:48,404 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-09-16 23:13:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:48,404 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-09-16 23:13:48,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:13:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-09-16 23:13:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 23:13:48,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:48,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:48,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:13:48,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:48,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-09-16 23:13:48,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:48,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883850919] [2020-09-16 23:13:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:48,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883850919] [2020-09-16 23:13:48,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:48,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:13:48,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767309997] [2020-09-16 23:13:48,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:13:48,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:48,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:13:48,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:13:48,482 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-09-16 23:13:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:48,529 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-09-16 23:13:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:13:48,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-16 23:13:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:48,533 INFO L225 Difference]: With dead ends: 314 [2020-09-16 23:13:48,533 INFO L226 Difference]: Without dead ends: 182 [2020-09-16 23:13:48,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:13:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-16 23:13:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-09-16 23:13:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-16 23:13:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-09-16 23:13:48,546 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-09-16 23:13:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:48,549 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-09-16 23:13:48,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:13:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-09-16 23:13:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:13:48,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:48,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:48,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:13:48,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:48,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-16 23:13:48,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:48,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253901291] [2020-09-16 23:13:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:48,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253901291] [2020-09-16 23:13:48,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:48,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:13:48,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713861266] [2020-09-16 23:13:48,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:13:48,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:48,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:13:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:48,609 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-09-16 23:13:48,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:48,622 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-09-16 23:13:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:13:48,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-16 23:13:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:48,624 INFO L225 Difference]: With dead ends: 176 [2020-09-16 23:13:48,624 INFO L226 Difference]: Without dead ends: 86 [2020-09-16 23:13:48,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-16 23:13:48,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-16 23:13:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-16 23:13:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-09-16 23:13:48,632 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-09-16 23:13:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:48,633 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-09-16 23:13:48,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:13:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-09-16 23:13:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:13:48,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:48,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:48,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:13:48,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:48,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1787778239, now seen corresponding path program 1 times [2020-09-16 23:13:48,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:48,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192979256] [2020-09-16 23:13:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:48,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192979256] [2020-09-16 23:13:48,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:48,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:13:48,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776842698] [2020-09-16 23:13:48,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:13:48,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:48,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:13:48,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:48,735 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand 3 states. [2020-09-16 23:13:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:48,741 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-09-16 23:13:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:13:48,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-16 23:13:48,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:48,742 INFO L225 Difference]: With dead ends: 80 [2020-09-16 23:13:48,742 INFO L226 Difference]: Without dead ends: 80 [2020-09-16 23:13:48,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-16 23:13:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-16 23:13:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-16 23:13:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-09-16 23:13:48,751 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-09-16 23:13:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:48,753 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-09-16 23:13:48,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:13:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-09-16 23:13:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:13:48,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:48,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:48,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:13:48,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-09-16 23:13:48,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:48,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579823010] [2020-09-16 23:13:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:48,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579823010] [2020-09-16 23:13:48,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:48,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:13:48,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068400049] [2020-09-16 23:13:48,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:13:48,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:48,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:13:48,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:13:48,819 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-09-16 23:13:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:48,838 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-09-16 23:13:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:13:48,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 23:13:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:48,840 INFO L225 Difference]: With dead ends: 104 [2020-09-16 23:13:48,840 INFO L226 Difference]: Without dead ends: 68 [2020-09-16 23:13:48,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:13:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-16 23:13:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-16 23:13:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-16 23:13:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-16 23:13:48,845 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-09-16 23:13:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:48,845 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-16 23:13:48,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:13:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-16 23:13:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:13:48,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:48,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:48,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:13:48,847 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:48,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:48,847 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-09-16 23:13:48,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:48,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379536314] [2020-09-16 23:13:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:48,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379536314] [2020-09-16 23:13:48,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:48,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:13:48,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947294498] [2020-09-16 23:13:48,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:13:48,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:13:48,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:13:48,924 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-16 23:13:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:48,956 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-16 23:13:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:13:48,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 23:13:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:48,958 INFO L225 Difference]: With dead ends: 81 [2020-09-16 23:13:48,958 INFO L226 Difference]: Without dead ends: 59 [2020-09-16 23:13:48,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:13:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-16 23:13:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-16 23:13:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-16 23:13:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-16 23:13:48,962 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-16 23:13:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:48,962 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-16 23:13:48,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:13:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-16 23:13:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:13:48,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:48,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:48,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:13:48,964 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-09-16 23:13:48,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:48,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537663561] [2020-09-16 23:13:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:49,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537663561] [2020-09-16 23:13:49,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:49,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:13:49,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166008339] [2020-09-16 23:13:49,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:13:49,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:13:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:13:49,036 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-16 23:13:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:49,074 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-16 23:13:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:13:49,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-16 23:13:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:49,075 INFO L225 Difference]: With dead ends: 60 [2020-09-16 23:13:49,075 INFO L226 Difference]: Without dead ends: 45 [2020-09-16 23:13:49,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:13:49,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-16 23:13:49,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-16 23:13:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-16 23:13:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-16 23:13:49,079 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-16 23:13:49,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:49,079 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-16 23:13:49,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:13:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-16 23:13:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 23:13:49,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:49,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:49,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:13:49,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-16 23:13:49,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:49,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996820491] [2020-09-16 23:13:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:49,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996820491] [2020-09-16 23:13:49,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:49,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:13:49,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626391975] [2020-09-16 23:13:49,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:13:49,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:49,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:13:49,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:13:49,200 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-16 23:13:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:49,263 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-16 23:13:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:13:49,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-16 23:13:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:49,264 INFO L225 Difference]: With dead ends: 42 [2020-09-16 23:13:49,264 INFO L226 Difference]: Without dead ends: 36 [2020-09-16 23:13:49,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:13:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-16 23:13:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-16 23:13:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-16 23:13:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-16 23:13:49,267 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-16 23:13:49,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:49,268 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-16 23:13:49,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:13:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-16 23:13:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 23:13:49,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:13:49,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:13:49,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 23:13:49,269 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:13:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:13:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-09-16 23:13:49,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:13:49,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148418604] [2020-09-16 23:13:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:13:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:13:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:13:49,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148418604] [2020-09-16 23:13:49,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:13:49,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:13:49,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189937052] [2020-09-16 23:13:49,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:13:49,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:13:49,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:13:49,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:49,314 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-16 23:13:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:13:49,318 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-16 23:13:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:13:49,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-16 23:13:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:13:49,319 INFO L225 Difference]: With dead ends: 35 [2020-09-16 23:13:49,319 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:13:49,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:13:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:13:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:13:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:13:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:13:49,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 23:13:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:13:49,321 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:13:49,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:13:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:13:49,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:13:49,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-16 23:13:49,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:13:49 BasicIcfg [2020-09-16 23:13:49,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:13:49,329 INFO L168 Benchmark]: Toolchain (without parser) took 5012.96 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 100.7 MB in the beginning and 142.5 MB in the end (delta: -41.8 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2020-09-16 23:13:49,330 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-16 23:13:49,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.19 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 161.8 MB in the end (delta: -61.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-16 23:13:49,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.39 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-16 23:13:49,333 INFO L168 Benchmark]: Boogie Preprocessor took 37.43 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:13:49,334 INFO L168 Benchmark]: RCFGBuilder took 464.60 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 136.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-16 23:13:49,335 INFO L168 Benchmark]: TraceAbstraction took 3646.23 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 135.4 MB in the beginning and 142.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-09-16 23:13:49,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 786.19 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 161.8 MB in the end (delta: -61.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.39 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.43 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.60 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 136.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3646.23 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 135.4 MB in the beginning and 142.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 193 SDtfs, 137 SDslu, 200 SDs, 0 SdLazy, 124 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3668 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...