/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:57:57,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:57:57,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:57:57,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:57:57,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:57:57,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:57:57,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:57:57,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:57:57,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:57:57,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:57:57,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:57:57,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:57:57,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:57:57,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:57:57,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:57:57,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:57:57,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:57:57,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:57:57,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:57:57,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:57:58,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:57:58,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:57:58,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:57:58,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:57:58,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:57:58,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:57:58,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:57:58,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:57:58,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:57:58,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:57:58,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:57:58,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:57:58,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:57:58,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:57:58,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:57:58,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:57:58,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:57:58,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:57:58,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:57:58,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:57:58,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:57:58,022 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-McrStrategy.epf [2020-04-18 19:57:58,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:57:58,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:57:58,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:57:58,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:57:58,046 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:57:58,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:57:58,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:57:58,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:57:58,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:57:58,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:57:58,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:57:58,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:57:58,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:57:58,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:57:58,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:57:58,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:57:58,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:57:58,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:57:58,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:57:58,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:57:58,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:57:58,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:57:58,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:57:58,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:57:58,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:57:58,051 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:57:58,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:57:58,052 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:57:58,052 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:57:58,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:57:58,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:57:58,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:57:58,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:57:58,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:57:58,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:57:58,384 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:57:58,385 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 19:57:58,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54fdb3ec9/81b7990556cb43b5b3fb2606f7b4533f/FLAG080137c45 [2020-04-18 19:57:59,035 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:57:59,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 19:57:59,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54fdb3ec9/81b7990556cb43b5b3fb2606f7b4533f/FLAG080137c45 [2020-04-18 19:57:59,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54fdb3ec9/81b7990556cb43b5b3fb2606f7b4533f [2020-04-18 19:57:59,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:57:59,320 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:57:59,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:57:59,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:57:59,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:57:59,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:57:59" (1/1) ... [2020-04-18 19:57:59,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1124f4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:59, skipping insertion in model container [2020-04-18 19:57:59,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:57:59" (1/1) ... [2020-04-18 19:57:59,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:57:59,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:57:59,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:57:59,881 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:57:59,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:58:00,027 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:58:00,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00 WrapperNode [2020-04-18 19:58:00,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:58:00,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:58:00,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:58:00,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:58:00,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:58:00,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:58:00,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:58:00,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:58:00,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (1/1) ... [2020-04-18 19:58:00,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:58:00,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:58:00,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:58:00,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:58:00,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (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 [2020-04-18 19:58:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:58:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:58:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:58:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:58:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:58:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:58:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:58:00,194 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:58:00,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:58:00,601 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:58:00,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:58:00 BoogieIcfgContainer [2020-04-18 19:58:00,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:58:00,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:58:00,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:58:00,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:58:00,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:57:59" (1/3) ... [2020-04-18 19:58:00,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2716e833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:58:00, skipping insertion in model container [2020-04-18 19:58:00,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:58:00" (2/3) ... [2020-04-18 19:58:00,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2716e833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:58:00, skipping insertion in model container [2020-04-18 19:58:00,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:58:00" (3/3) ... [2020-04-18 19:58:00,614 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-04-18 19:58:00,624 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:58:00,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:58:00,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:58:00,633 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:58:00,658 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,659 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,659 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,659 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,660 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,660 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,661 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,661 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,661 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,662 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,662 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,662 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,663 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,663 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,663 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,664 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,664 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,664 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,668 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,669 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,669 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,669 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,676 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,677 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,677 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,677 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,680 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,680 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,680 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,680 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:58:00,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:58:00,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:58:00,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:58:00,722 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:58:00,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:58:00,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:58:00,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:58:00,723 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:58:00,723 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:58:00,736 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 19:58:01,223 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8471 states. [2020-04-18 19:58:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states. [2020-04-18 19:58:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:58:01,254 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:58:01,256 INFO L425 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] [2020-04-18 19:58:01,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:58:01,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:01,264 INFO L82 PathProgramCache]: Analyzing trace with hash -218349271, now seen corresponding path program 1 times [2020-04-18 19:58:01,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:58:01,272 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [852895999] [2020-04-18 19:58:01,289 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:01,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:58:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:58:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:58:01,309 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:58:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:01,310 INFO L82 PathProgramCache]: Analyzing trace with hash -218349271, now seen corresponding path program 2 times [2020-04-18 19:58:01,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:01,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983549429] [2020-04-18 19:58:01,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:01,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983549429] [2020-04-18 19:58:01,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:01,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:58:01,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:01,866 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:01,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:58:01,879 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:01,941 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:58:01,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:58:01,947 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-04-18 19:58:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:02,052 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:58:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:58:02,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:02,054 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [852895999] [2020-04-18 19:58:02,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:58:02,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:58:02,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [852895999] [2020-04-18 19:58:02,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:58:02,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:58:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:58:02,063 INFO L87 Difference]: Start difference. First operand 8471 states. Second operand 6 states. [2020-04-18 19:58:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:02,464 INFO L93 Difference]: Finished difference Result 20809 states and 71911 transitions. [2020-04-18 19:58:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:58:02,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 19:58:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:58:02,535 INFO L225 Difference]: With dead ends: 20809 [2020-04-18 19:58:02,536 INFO L226 Difference]: Without dead ends: 6418 [2020-04-18 19:58:02,538 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:58:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2020-04-18 19:58:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 5170. [2020-04-18 19:58:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5170 states. [2020-04-18 19:58:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 17281 transitions. [2020-04-18 19:58:02,953 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 17281 transitions. Word has length 35 [2020-04-18 19:58:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:58:02,956 INFO L479 AbstractCegarLoop]: Abstraction has 5170 states and 17281 transitions. [2020-04-18 19:58:02,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:58:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 17281 transitions. [2020-04-18 19:58:02,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:58:02,974 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:58:02,983 INFO L425 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] [2020-04-18 19:58:02,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:58:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1227475734, now seen corresponding path program 1 times [2020-04-18 19:58:02,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:58:02,985 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1428667426] [2020-04-18 19:58:02,987 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:02,991 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 117 transitions. [2020-04-18 19:58:02,995 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 19:58:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:58:02,998 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:58:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:02,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1227475734, now seen corresponding path program 2 times [2020-04-18 19:58:02,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:03,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127566755] [2020-04-18 19:58:03,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:03,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127566755] [2020-04-18 19:58:03,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:03,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:58:03,206 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:03,209 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:03,220 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 93 transitions. [2020-04-18 19:58:03,221 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:03,255 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:58:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:03,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:58:03,256 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 6 states. [2020-04-18 19:58:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:03,311 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2020-04-18 19:58:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 117 transitions. [2020-04-18 19:58:03,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:03,312 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1428667426] [2020-04-18 19:58:03,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:58:03,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:58:03,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1428667426] [2020-04-18 19:58:03,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:58:03,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:58:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:58:03,314 INFO L87 Difference]: Start difference. First operand 5170 states and 17281 transitions. Second operand 6 states. [2020-04-18 19:58:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:03,471 INFO L93 Difference]: Finished difference Result 5970 states and 19826 transitions. [2020-04-18 19:58:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:58:03,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 19:58:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:58:03,513 INFO L225 Difference]: With dead ends: 5970 [2020-04-18 19:58:03,514 INFO L226 Difference]: Without dead ends: 4990 [2020-04-18 19:58:03,524 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:58:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4990 states. [2020-04-18 19:58:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4990 to 4990. [2020-04-18 19:58:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4990 states. [2020-04-18 19:58:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 16597 transitions. [2020-04-18 19:58:03,798 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 16597 transitions. Word has length 37 [2020-04-18 19:58:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:58:03,799 INFO L479 AbstractCegarLoop]: Abstraction has 4990 states and 16597 transitions. [2020-04-18 19:58:03,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:58:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 16597 transitions. [2020-04-18 19:58:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:58:03,808 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:58:03,809 INFO L425 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] [2020-04-18 19:58:03,809 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:58:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -955803966, now seen corresponding path program 1 times [2020-04-18 19:58:03,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:58:03,810 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1904836584] [2020-04-18 19:58:03,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:03,812 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 85 transitions. [2020-04-18 19:58:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 19:58:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:58:03,813 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:58:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:03,814 INFO L82 PathProgramCache]: Analyzing trace with hash -955803966, now seen corresponding path program 2 times [2020-04-18 19:58:03,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:03,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305606041] [2020-04-18 19:58:03,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:03,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305606041] [2020-04-18 19:58:03,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:03,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:58:03,914 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:03,917 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:03,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 61 transitions. [2020-04-18 19:58:03,921 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:03,951 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:58:03,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:03,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:58:03,952 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 6 states. [2020-04-18 19:58:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:04,012 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-04-18 19:58:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2020-04-18 19:58:04,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:04,013 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1904836584] [2020-04-18 19:58:04,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:58:04,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:58:04,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1904836584] [2020-04-18 19:58:04,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:58:04,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:58:04,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:58:04,015 INFO L87 Difference]: Start difference. First operand 4990 states and 16597 transitions. Second operand 6 states. [2020-04-18 19:58:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:04,125 INFO L93 Difference]: Finished difference Result 5550 states and 18330 transitions. [2020-04-18 19:58:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:58:04,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 19:58:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:58:04,158 INFO L225 Difference]: With dead ends: 5550 [2020-04-18 19:58:04,158 INFO L226 Difference]: Without dead ends: 4570 [2020-04-18 19:58:04,159 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:58:04,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2020-04-18 19:58:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4514. [2020-04-18 19:58:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4514 states. [2020-04-18 19:58:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 14915 transitions. [2020-04-18 19:58:04,303 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 14915 transitions. Word has length 37 [2020-04-18 19:58:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:58:04,304 INFO L479 AbstractCegarLoop]: Abstraction has 4514 states and 14915 transitions. [2020-04-18 19:58:04,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:58:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 14915 transitions. [2020-04-18 19:58:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:58:04,315 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:58:04,316 INFO L425 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] [2020-04-18 19:58:04,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:58:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash -63726013, now seen corresponding path program 1 times [2020-04-18 19:58:04,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:58:04,317 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [46108633] [2020-04-18 19:58:04,319 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:04,324 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 319 transitions. [2020-04-18 19:58:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-04-18 19:58:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:58:04,328 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:58:04,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:04,329 INFO L82 PathProgramCache]: Analyzing trace with hash -63726013, now seen corresponding path program 2 times [2020-04-18 19:58:04,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:04,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499595590] [2020-04-18 19:58:04,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:04,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499595590] [2020-04-18 19:58:04,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:04,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:58:04,692 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:04,694 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:04,705 INFO L259 McrAutomatonBuilder]: Finished intersection with 108 states and 199 transitions. [2020-04-18 19:58:04,706 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:04,762 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:58:04,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:04,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:58:04,763 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 6 states. [2020-04-18 19:58:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:04,821 INFO L93 Difference]: Finished difference Result 156 states and 319 transitions. [2020-04-18 19:58:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 319 transitions. [2020-04-18 19:58:04,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:04,823 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [46108633] [2020-04-18 19:58:04,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:58:04,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:58:04,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [46108633] [2020-04-18 19:58:04,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:58:04,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:58:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:58:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:58:04,824 INFO L87 Difference]: Start difference. First operand 4514 states and 14915 transitions. Second operand 6 states. [2020-04-18 19:58:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:04,950 INFO L93 Difference]: Finished difference Result 5689 states and 18403 transitions. [2020-04-18 19:58:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:58:04,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-04-18 19:58:04,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:58:04,968 INFO L225 Difference]: With dead ends: 5689 [2020-04-18 19:58:04,968 INFO L226 Difference]: Without dead ends: 4029 [2020-04-18 19:58:04,969 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:58:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2020-04-18 19:58:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 4029. [2020-04-18 19:58:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4029 states. [2020-04-18 19:58:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4029 states to 4029 states and 13005 transitions. [2020-04-18 19:58:05,090 INFO L78 Accepts]: Start accepts. Automaton has 4029 states and 13005 transitions. Word has length 39 [2020-04-18 19:58:05,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:58:05,090 INFO L479 AbstractCegarLoop]: Abstraction has 4029 states and 13005 transitions. [2020-04-18 19:58:05,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:58:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4029 states and 13005 transitions. [2020-04-18 19:58:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:58:05,100 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:58:05,100 INFO L425 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] [2020-04-18 19:58:05,101 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:58:05,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:05,101 INFO L82 PathProgramCache]: Analyzing trace with hash 585243076, now seen corresponding path program 1 times [2020-04-18 19:58:05,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:58:05,102 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1826284029] [2020-04-18 19:58:05,103 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:05,108 INFO L259 McrAutomatonBuilder]: Finished intersection with 250 states and 553 transitions. [2020-04-18 19:58:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states. [2020-04-18 19:58:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:58:05,111 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:58:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash 585243076, now seen corresponding path program 2 times [2020-04-18 19:58:05,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:05,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460199180] [2020-04-18 19:58:05,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:05,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460199180] [2020-04-18 19:58:05,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:05,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:58:05,224 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:05,228 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:05,239 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 177 transitions. [2020-04-18 19:58:05,239 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:05,274 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:58:05,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:58:05,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:58:05,275 INFO L87 Difference]: Start difference. First operand 250 states. Second operand 7 states. [2020-04-18 19:58:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:05,385 INFO L93 Difference]: Finished difference Result 250 states and 553 transitions. [2020-04-18 19:58:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 553 transitions. [2020-04-18 19:58:05,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:05,386 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1826284029] [2020-04-18 19:58:05,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:58:05,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:58:05,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1826284029] [2020-04-18 19:58:05,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:58:05,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:58:05,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:58:05,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:58:05,388 INFO L87 Difference]: Start difference. First operand 4029 states and 13005 transitions. Second operand 7 states. [2020-04-18 19:58:05,792 WARN L192 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-04-18 19:58:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:05,829 INFO L93 Difference]: Finished difference Result 4029 states and 12543 transitions. [2020-04-18 19:58:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:58:05,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 19:58:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:58:05,838 INFO L225 Difference]: With dead ends: 4029 [2020-04-18 19:58:05,838 INFO L226 Difference]: Without dead ends: 2637 [2020-04-18 19:58:05,839 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:58:05,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2020-04-18 19:58:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2573. [2020-04-18 19:58:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-04-18 19:58:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 7833 transitions. [2020-04-18 19:58:05,906 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 7833 transitions. Word has length 41 [2020-04-18 19:58:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:58:05,906 INFO L479 AbstractCegarLoop]: Abstraction has 2573 states and 7833 transitions. [2020-04-18 19:58:05,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:58:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 7833 transitions. [2020-04-18 19:58:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:05,913 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:58:05,914 INFO L425 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] [2020-04-18 19:58:05,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:58:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash 69081353, now seen corresponding path program 1 times [2020-04-18 19:58:05,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:58:05,919 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1664773178] [2020-04-18 19:58:05,921 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:05,930 INFO L259 McrAutomatonBuilder]: Finished intersection with 460 states and 1131 transitions. [2020-04-18 19:58:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states. [2020-04-18 19:58:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:05,935 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:58:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1701324279, now seen corresponding path program 2 times [2020-04-18 19:58:05,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:05,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328051434] [2020-04-18 19:58:05,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:06,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328051434] [2020-04-18 19:58:06,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:06,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:58:06,068 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:06,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:06,088 INFO L259 McrAutomatonBuilder]: Finished intersection with 136 states and 257 transitions. [2020-04-18 19:58:06,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:06,191 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:58:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:58:06,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:58:06,192 INFO L87 Difference]: Start difference. First operand 460 states. Second operand 7 states. [2020-04-18 19:58:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:06,358 INFO L93 Difference]: Finished difference Result 676 states and 1605 transitions. [2020-04-18 19:58:06,358 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1605 transitions. [2020-04-18 19:58:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:06,360 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:58:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1061582793, now seen corresponding path program 3 times [2020-04-18 19:58:06,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:06,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527275329] [2020-04-18 19:58:06,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:06,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527275329] [2020-04-18 19:58:06,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:06,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:58:06,480 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:06,484 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:06,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 152 states and 284 transitions. [2020-04-18 19:58:06,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:06,531 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:58:06,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:58:06,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:58:06,532 INFO L87 Difference]: Start difference. First operand 676 states and 1605 transitions. Second operand 7 states. [2020-04-18 19:58:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:06,645 INFO L93 Difference]: Finished difference Result 700 states and 1649 transitions. [2020-04-18 19:58:06,645 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1649 transitions. [2020-04-18 19:58:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:06,647 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:58:06,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:06,648 INFO L82 PathProgramCache]: Analyzing trace with hash 69081353, now seen corresponding path program 4 times [2020-04-18 19:58:06,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:06,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932933254] [2020-04-18 19:58:06,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:06,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932933254] [2020-04-18 19:58:06,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:06,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:58:06,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:06,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:06,824 INFO L259 McrAutomatonBuilder]: Finished intersection with 140 states and 275 transitions. [2020-04-18 19:58:06,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:06,894 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:58:06,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:58:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:58:06,895 INFO L87 Difference]: Start difference. First operand 700 states and 1649 transitions. Second operand 9 states. [2020-04-18 19:58:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:07,178 INFO L93 Difference]: Finished difference Result 802 states and 1868 transitions. [2020-04-18 19:58:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1868 transitions. [2020-04-18 19:58:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:07,180 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:58:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:07,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1984088851, now seen corresponding path program 5 times [2020-04-18 19:58:07,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:07,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812984716] [2020-04-18 19:58:07,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:07,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812984716] [2020-04-18 19:58:07,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:07,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:58:07,315 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:07,319 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:07,345 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 295 transitions. [2020-04-18 19:58:07,345 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:07,432 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:58:07,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:58:07,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:58:07,433 INFO L87 Difference]: Start difference. First operand 802 states and 1868 transitions. Second operand 7 states. [2020-04-18 19:58:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:07,545 INFO L93 Difference]: Finished difference Result 886 states and 2048 transitions. [2020-04-18 19:58:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2048 transitions. [2020-04-18 19:58:07,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:07,550 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1664773178] [2020-04-18 19:58:07,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:58:07,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:58:07,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1664773178] [2020-04-18 19:58:07,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:58:07,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:58:07,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:58:07,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:58:07,553 INFO L87 Difference]: Start difference. First operand 2573 states and 7833 transitions. Second operand 12 states. [2020-04-18 19:58:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:08,034 INFO L93 Difference]: Finished difference Result 4296 states and 12931 transitions. [2020-04-18 19:58:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:58:08,034 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-04-18 19:58:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:58:08,045 INFO L225 Difference]: With dead ends: 4296 [2020-04-18 19:58:08,046 INFO L226 Difference]: Without dead ends: 2130 [2020-04-18 19:58:08,047 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:58:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-04-18 19:58:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1734. [2020-04-18 19:58:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1734 states. [2020-04-18 19:58:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 5062 transitions. [2020-04-18 19:58:08,096 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 5062 transitions. Word has length 43 [2020-04-18 19:58:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:58:08,098 INFO L479 AbstractCegarLoop]: Abstraction has 1734 states and 5062 transitions. [2020-04-18 19:58:08,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:58:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 5062 transitions. [2020-04-18 19:58:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:08,102 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:58:08,103 INFO L425 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] [2020-04-18 19:58:08,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:58:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:08,104 INFO L82 PathProgramCache]: Analyzing trace with hash -111505431, now seen corresponding path program 1 times [2020-04-18 19:58:08,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:58:08,104 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [608528013] [2020-04-18 19:58:08,107 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:08,116 INFO L259 McrAutomatonBuilder]: Finished intersection with 380 states and 907 transitions. [2020-04-18 19:58:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states. [2020-04-18 19:58:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:08,120 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:58:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:08,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1656943211, now seen corresponding path program 2 times [2020-04-18 19:58:08,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:08,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776164300] [2020-04-18 19:58:08,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:08,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776164300] [2020-04-18 19:58:08,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:08,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:58:08,254 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:08,258 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:08,274 INFO L259 McrAutomatonBuilder]: Finished intersection with 132 states and 229 transitions. [2020-04-18 19:58:08,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:08,327 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:58:08,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:58:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:58:08,328 INFO L87 Difference]: Start difference. First operand 380 states. Second operand 7 states. [2020-04-18 19:58:08,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:08,599 INFO L93 Difference]: Finished difference Result 608 states and 1419 transitions. [2020-04-18 19:58:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1419 transitions. [2020-04-18 19:58:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:58:08,600 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:58:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:58:08,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2061844957, now seen corresponding path program 3 times [2020-04-18 19:58:08,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:58:08,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681254351] [2020-04-18 19:58:08,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:58:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:58:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:58:08,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681254351] [2020-04-18 19:58:08,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:58:08,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:58:08,691 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:58:08,695 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:58:08,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 232 transitions. [2020-04-18 19:58:08,711 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:58:08,790 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:58:08,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:58:08,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:58:08,791 INFO L87 Difference]: Start difference. First operand 608 states and 1419 transitions. Second operand 7 states. [2020-04-18 19:58:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:09,064 INFO L93 Difference]: Finished difference Result 608 states and 1419 transitions. [2020-04-18 19:58:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1419 transitions. [2020-04-18 19:58:09,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:09,066 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [608528013] [2020-04-18 19:58:09,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:58:09,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:58:09,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [608528013] [2020-04-18 19:58:09,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:58:09,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:58:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:58:09,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:58:09,068 INFO L87 Difference]: Start difference. First operand 1734 states and 5062 transitions. Second operand 12 states. [2020-04-18 19:58:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:58:09,568 INFO L93 Difference]: Finished difference Result 1583 states and 4451 transitions. [2020-04-18 19:58:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:58:09,569 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-04-18 19:58:09,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:58:09,569 INFO L225 Difference]: With dead ends: 1583 [2020-04-18 19:58:09,570 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:58:09,570 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:58:09,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:58:09,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:58:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:58:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:58:09,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-04-18 19:58:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:58:09,572 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:58:09,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:58:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:58:09,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:58:09,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:58:09 BasicIcfg [2020-04-18 19:58:09,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:58:09,580 INFO L168 Benchmark]: Toolchain (without parser) took 10278.99 ms. Allocated memory was 145.8 MB in the beginning and 553.1 MB in the end (delta: 407.4 MB). Free memory was 102.7 MB in the beginning and 385.6 MB in the end (delta: -282.9 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:58:09,580 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:58:09,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.40 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 159.6 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:58:09,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.22 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:58:09,583 INFO L168 Benchmark]: Boogie Preprocessor took 40.58 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:58:09,583 INFO L168 Benchmark]: RCFGBuilder took 478.49 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 134.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:58:09,584 INFO L168 Benchmark]: TraceAbstraction took 8971.32 ms. Allocated memory was 202.9 MB in the beginning and 553.1 MB in the end (delta: 350.2 MB). Free memory was 133.9 MB in the beginning and 385.6 MB in the end (delta: -251.7 MB). Peak memory consumption was 98.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:58:09,587 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.40 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 159.6 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.22 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.58 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.49 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 134.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8971.32 ms. Allocated memory was 202.9 MB in the beginning and 553.1 MB in the end (delta: 350.2 MB). Free memory was 133.9 MB in the beginning and 385.6 MB in the end (delta: -251.7 MB). Peak memory consumption was 98.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 8.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 702 SDtfs, 1185 SDslu, 2659 SDs, 0 SdLazy, 406 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 674 GetRequests, 557 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8471occurred 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: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1764 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...