/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-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:44:54,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:44:54,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:44:54,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:44:54,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:44:54,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:44:54,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:44:54,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:44:54,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:44:54,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:44:54,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:44:54,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:44:54,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:44:54,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:44:54,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:44:54,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:44:54,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:44:54,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:44:54,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:44:54,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:44:54,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:44:54,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:44:54,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:44:54,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:44:54,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:44:54,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:44:54,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:44:54,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:44:54,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:44:54,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:44:54,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:44:54,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:44:54,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:44:54,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:44:54,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:44:54,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:44:54,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:44:54,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:44:54,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:44:54,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:44:54,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:44:54,548 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-SemanticLbe-McrStrategy.epf [2020-04-18 10:44:54,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:44:54,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:44:54,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:44:54,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:44:54,565 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:44:54,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:44:54,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:44:54,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:44:54,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:44:54,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:44:54,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:44:54,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:44:54,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:44:54,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:44:54,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:44:54,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:44:54,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:44:54,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:44:54,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:44:54,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:44:54,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:44:54,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:44:54,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:44:54,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:44:54,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:44:54,570 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:44:54,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:44:54,570 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:44:54,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:44:54,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:44:54,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:44:54,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:44:54,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:44:54,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:44:54,875 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:44:54,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2020-04-18 10:44:54,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b7916e0/f0b88a85691f4f288b888980bd8e1be7/FLAG2ba836db6 [2020-04-18 10:44:55,561 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:44:55,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2020-04-18 10:44:55,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b7916e0/f0b88a85691f4f288b888980bd8e1be7/FLAG2ba836db6 [2020-04-18 10:44:55,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b7916e0/f0b88a85691f4f288b888980bd8e1be7 [2020-04-18 10:44:55,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:44:55,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:44:55,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:44:55,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:44:55,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:44:55,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:44:55" (1/1) ... [2020-04-18 10:44:55,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3459bafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:55, skipping insertion in model container [2020-04-18 10:44:55,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:44:55" (1/1) ... [2020-04-18 10:44:55,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:44:55,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:44:56,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:44:56,319 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:44:56,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:44:56,455 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:44:56,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56 WrapperNode [2020-04-18 10:44:56,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:44:56,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:44:56,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:44:56,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:44:56,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:44:56,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:44:56,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:44:56,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:44:56,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... [2020-04-18 10:44:56,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:44:56,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:44:56,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:44:56,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:44:56,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:44:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:44:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:44:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:44:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:44:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:44:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:44:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:44:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:44:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:44:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:44:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:44:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:44:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:44:56,611 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 10:44:56,989 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:44:56,989 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:44:56,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:44:56 BoogieIcfgContainer [2020-04-18 10:44:56,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:44:56,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:44:56,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:44:56,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:44:56,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:44:55" (1/3) ... [2020-04-18 10:44:57,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512e262f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:44:57, skipping insertion in model container [2020-04-18 10:44:57,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:44:56" (2/3) ... [2020-04-18 10:44:57,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512e262f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:44:57, skipping insertion in model container [2020-04-18 10:44:57,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:44:56" (3/3) ... [2020-04-18 10:44:57,003 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.opt.i [2020-04-18 10:44:57,014 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:44:57,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:44:57,021 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:44:57,022 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:44:57,047 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,047 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,047 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,048 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,049 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,049 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,049 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,050 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,050 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,050 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,051 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,051 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,051 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,052 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,052 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,052 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,052 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,057 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,057 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,057 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,058 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,067 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,067 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,068 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,068 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,087 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,087 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,087 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,088 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:44:57,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:44:57,130 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:44:57,130 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:44:57,131 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:44:57,131 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:44:57,131 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:44:57,131 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:44:57,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:44:57,132 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:44:57,151 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 10:44:57,153 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 10:44:57,216 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 10:44:57,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:44:57,221 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:44:57,224 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 10:44:57,244 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 10:44:57,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:44:57,245 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:44:57,247 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:44:57,248 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:44:58,814 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 10:44:58,929 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 10:44:58,929 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 10:44:58,933 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 10:44:58,966 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 10:44:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 10:44:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:44:58,980 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:44:58,981 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:44:58,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:44:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 10:44:59,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:44:59,002 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [386235607] [2020-04-18 10:44:59,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:44:59,043 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:44:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:44:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:44:59,046 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:44:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:59,046 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 2 times [2020-04-18 10:44:59,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:44:59,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248078275] [2020-04-18 10:44:59,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:44:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:44:59,344 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 10:44:59,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248078275] [2020-04-18 10:44:59,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:44:59,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:44:59,349 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:44:59,351 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:44:59,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:44:59,358 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:44:59,361 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:44:59,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:44:59,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:44:59,369 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 10:44:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:44:59,374 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:44:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:44:59,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:44:59,375 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [386235607] [2020-04-18 10:44:59,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:44:59,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:44:59,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [386235607] [2020-04-18 10:44:59,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 10:44:59,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:44:59,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:44:59,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:44:59,385 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 10:44:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:44:59,411 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 10:44:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 10:44:59,413 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 10:44:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:44:59,430 INFO L225 Difference]: With dead ends: 362 [2020-04-18 10:44:59,430 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 10:44:59,431 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:44:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 10:44:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 10:44:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 10:44:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 10:44:59,506 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 10:44:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:44:59,507 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 10:44:59,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 10:44:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 10:44:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:44:59,509 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:44:59,509 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:44:59,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:44:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 10:44:59,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:44:59,511 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [627915043] [2020-04-18 10:44:59,511 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:44:59,512 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:44:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 10:44:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:44:59,513 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:44:59,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 2 times [2020-04-18 10:44:59,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:44:59,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307982380] [2020-04-18 10:44:59,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:44:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:44:59,626 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 10:44:59,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307982380] [2020-04-18 10:44:59,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:44:59,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:44:59,627 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:44:59,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:44:59,629 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:44:59,629 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:44:59,639 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:44:59,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:44:59,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:44:59,640 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 10:44:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:44:59,655 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 10:44:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 10:44:59,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:44:59,655 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [627915043] [2020-04-18 10:44:59,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:44:59,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:44:59,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [627915043] [2020-04-18 10:44:59,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:44:59,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:44:59,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:44:59,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:44:59,658 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 10:44:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:44:59,689 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 10:44:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:44:59,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:44:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:44:59,694 INFO L225 Difference]: With dead ends: 330 [2020-04-18 10:44:59,694 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 10:44:59,695 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:44:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 10:44:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 10:44:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 10:44:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 10:44:59,731 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 10:44:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:44:59,732 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 10:44:59,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:44:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 10:44:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:44:59,736 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:44:59,736 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:44:59,737 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:44:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:59,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-18 10:44:59,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:44:59,738 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [264461703] [2020-04-18 10:44:59,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:44:59,739 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 10:44:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 10:44:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:44:59,742 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:44:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:59,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 2 times [2020-04-18 10:44:59,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:44:59,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968186452] [2020-04-18 10:44:59,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:44:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:44:59,826 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 10:44:59,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968186452] [2020-04-18 10:44:59,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:44:59,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:44:59,827 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:44:59,828 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:44:59,829 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 10:44:59,829 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:44:59,849 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:44:59,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:44:59,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:44:59,850 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2020-04-18 10:44:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:44:59,869 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2020-04-18 10:44:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-04-18 10:44:59,870 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:44:59,870 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [264461703] [2020-04-18 10:44:59,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:44:59,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:44:59,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [264461703] [2020-04-18 10:44:59,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:44:59,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:44:59,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:44:59,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:44:59,873 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-04-18 10:44:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:44:59,927 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-18 10:44:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:44:59,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 10:44:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:44:59,930 INFO L225 Difference]: With dead ends: 290 [2020-04-18 10:44:59,930 INFO L226 Difference]: Without dead ends: 242 [2020-04-18 10:44:59,930 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:44:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-18 10:44:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-18 10:44:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-18 10:44:59,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-18 10:44:59,950 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-18 10:44:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:44:59,951 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-18 10:44:59,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:44:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-18 10:44:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:44:59,952 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:44:59,953 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:44:59,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:44:59,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:59,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1535940786, now seen corresponding path program 1 times [2020-04-18 10:44:59,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:44:59,956 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [99803557] [2020-04-18 10:44:59,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:44:59,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 52 transitions. [2020-04-18 10:44:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-04-18 10:44:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:44:59,958 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:44:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:44:59,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1535940786, now seen corresponding path program 2 times [2020-04-18 10:44:59,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:44:59,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801013525] [2020-04-18 10:44:59,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:45:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:45:00,087 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 10:45:00,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801013525] [2020-04-18 10:45:00,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:45:00,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:45:00,089 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:45:00,091 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:45:00,094 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-04-18 10:45:00,094 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:45:00,150 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:45:00,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:45:00,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:45:00,151 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2020-04-18 10:45:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:45:00,175 INFO L93 Difference]: Finished difference Result 30 states and 52 transitions. [2020-04-18 10:45:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 52 transitions. [2020-04-18 10:45:00,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:45:00,176 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [99803557] [2020-04-18 10:45:00,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:45:00,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:45:00,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [99803557] [2020-04-18 10:45:00,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:45:00,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:45:00,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:45:00,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:45:00,178 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 6 states. [2020-04-18 10:45:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:45:00,226 INFO L93 Difference]: Finished difference Result 290 states and 777 transitions. [2020-04-18 10:45:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:45:00,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 10:45:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:45:00,228 INFO L225 Difference]: With dead ends: 290 [2020-04-18 10:45:00,228 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 10:45:00,229 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:45:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 10:45:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 10:45:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 10:45:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-04-18 10:45:00,240 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 11 [2020-04-18 10:45:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:45:00,241 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-04-18 10:45:00,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:45:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-04-18 10:45:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:45:00,242 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:45:00,243 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:45:00,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:45:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:45:00,243 INFO L82 PathProgramCache]: Analyzing trace with hash -762243594, now seen corresponding path program 1 times [2020-04-18 10:45:00,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:45:00,245 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [752441007] [2020-04-18 10:45:00,246 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:45:00,247 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 140 transitions. [2020-04-18 10:45:00,249 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 10:45:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:45:00,250 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:45:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:45:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1574640642, now seen corresponding path program 2 times [2020-04-18 10:45:00,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:45:00,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244513775] [2020-04-18 10:45:00,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:45:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:45:00,348 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 10:45:00,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244513775] [2020-04-18 10:45:00,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:45:00,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:45:00,350 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:45:00,354 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:45:00,360 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 70 transitions. [2020-04-18 10:45:00,360 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:45:00,380 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:45:00,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:45:00,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:45:00,381 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 5 states. [2020-04-18 10:45:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:45:00,405 INFO L93 Difference]: Finished difference Result 62 states and 140 transitions. [2020-04-18 10:45:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 140 transitions. [2020-04-18 10:45:00,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:45:00,406 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [752441007] [2020-04-18 10:45:00,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:45:00,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:45:00,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [752441007] [2020-04-18 10:45:00,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:45:00,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:45:00,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:45:00,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:45:00,408 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 5 states. [2020-04-18 10:45:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:45:00,445 INFO L93 Difference]: Finished difference Result 170 states and 409 transitions. [2020-04-18 10:45:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:45:00,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 10:45:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:45:00,446 INFO L225 Difference]: With dead ends: 170 [2020-04-18 10:45:00,446 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 10:45:00,447 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:45:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 10:45:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 10:45:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 10:45:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-18 10:45:00,451 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-04-18 10:45:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:45:00,454 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-18 10:45:00,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:45:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-18 10:45:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:45:00,455 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:45:00,455 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:45:00,456 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:45:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:45:00,456 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-18 10:45:00,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:45:00,457 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [845992722] [2020-04-18 10:45:00,458 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:45:00,460 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 220 transitions. [2020-04-18 10:45:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 10:45:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:45:00,462 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:45:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:45:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1571173060, now seen corresponding path program 2 times [2020-04-18 10:45:00,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:45:00,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467659490] [2020-04-18 10:45:00,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:45:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:45:00,567 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 10:45:00,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467659490] [2020-04-18 10:45:00,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:45:00,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:45:00,568 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:45:00,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:45:00,575 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 93 transitions. [2020-04-18 10:45:00,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:45:00,621 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 10:45:00,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:45:00,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:45:00,622 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 7 states. [2020-04-18 10:45:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:45:00,694 INFO L93 Difference]: Finished difference Result 110 states and 256 transitions. [2020-04-18 10:45:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 256 transitions. [2020-04-18 10:45:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:45:00,695 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:45:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:45:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1942674216, now seen corresponding path program 3 times [2020-04-18 10:45:00,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:45:00,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601762161] [2020-04-18 10:45:00,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:45:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:45:00,787 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 10:45:00,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601762161] [2020-04-18 10:45:00,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:45:00,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:45:00,789 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:45:00,790 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:45:00,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 71 transitions. [2020-04-18 10:45:00,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:45:00,844 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:45:00,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:45:00,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:45:00,845 INFO L87 Difference]: Start difference. First operand 110 states and 256 transitions. Second operand 7 states. [2020-04-18 10:45:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:45:00,884 INFO L93 Difference]: Finished difference Result 110 states and 256 transitions. [2020-04-18 10:45:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 256 transitions. [2020-04-18 10:45:00,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:45:00,885 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [845992722] [2020-04-18 10:45:00,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:45:00,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:45:00,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [845992722] [2020-04-18 10:45:00,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 10:45:00,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:45:00,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 10:45:00,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:45:00,887 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 11 states. [2020-04-18 10:45:01,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:45:01,072 INFO L93 Difference]: Finished difference Result 68 states and 144 transitions. [2020-04-18 10:45:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 10:45:01,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 10:45:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:45:01,073 INFO L225 Difference]: With dead ends: 68 [2020-04-18 10:45:01,074 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:45:01,074 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-04-18 10:45:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:45:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:45:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:45:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:45:01,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 10:45:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:45:01,076 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:45:01,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 10:45:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:45:01,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:45:01,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:45:01 BasicIcfg [2020-04-18 10:45:01,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:45:01,082 INFO L168 Benchmark]: Toolchain (without parser) took 5313.93 ms. Allocated memory was 134.2 MB in the beginning and 257.4 MB in the end (delta: 123.2 MB). Free memory was 97.2 MB in the beginning and 146.2 MB in the end (delta: -49.0 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:45:01,083 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 10:45:01,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.21 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 95.3 MB in the beginning and 156.6 MB in the end (delta: -61.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:45:01,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.52 ms. Allocated memory is still 200.3 MB. Free memory was 156.6 MB in the beginning and 154.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:45:01,085 INFO L168 Benchmark]: Boogie Preprocessor took 26.14 ms. Allocated memory is still 200.3 MB. Free memory was 154.4 MB in the beginning and 152.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 10:45:01,086 INFO L168 Benchmark]: RCFGBuilder took 459.30 ms. Allocated memory is still 200.3 MB. Free memory was 152.9 MB in the beginning and 130.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:45:01,087 INFO L168 Benchmark]: TraceAbstraction took 4084.75 ms. Allocated memory was 200.3 MB in the beginning and 257.4 MB in the end (delta: 57.1 MB). Free memory was 130.1 MB in the beginning and 146.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:45:01,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.21 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 95.3 MB in the beginning and 156.6 MB in the end (delta: -61.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.52 ms. Allocated memory is still 200.3 MB. Free memory was 156.6 MB in the beginning and 154.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.14 ms. Allocated memory is still 200.3 MB. Free memory was 154.4 MB in the beginning and 152.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.30 ms. Allocated memory is still 200.3 MB. Free memory was 152.9 MB in the beginning and 130.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4084.75 ms. Allocated memory was 200.3 MB in the beginning and 257.4 MB in the end (delta: 57.1 MB). Free memory was 130.1 MB in the beginning and 146.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 121 SDtfs, 211 SDslu, 205 SDs, 0 SdLazy, 127 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...