/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:42:54,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:42:54,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:42:54,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:42:54,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:42:54,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:42:54,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:42:54,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:42:54,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:42:54,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:42:54,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:42:54,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:42:54,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:42:54,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:42:54,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:42:54,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:42:54,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:42:54,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:42:54,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:42:54,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:42:54,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:42:54,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:42:54,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:42:54,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:42:54,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:42:54,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:42:54,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:42:54,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:42:54,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:42:54,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:42:54,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:42:54,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:42:54,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:42:54,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:42:54,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:42:54,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:42:54,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:42:54,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:42:54,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:42:54,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:42:54,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:42:54,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:42:54,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:42:54,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:42:54,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:42:54,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:42:54,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:42:54,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:42:54,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:42:54,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:42:54,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:42:54,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:42:54,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:42:54,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:42:54,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:42:54,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:42:54,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:42:54,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:42:54,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:42:54,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:42:54,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:42:54,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:42:54,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:42:54,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:42:54,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:42:54,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:42:54,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:42:54,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:42:54,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:42:54,566 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:42:54,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:42:54,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:42:54,566 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:42:54,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:42:54,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:42:54,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:42:54,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:42:54,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:42:54,904 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-16 13:42:54,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f4451399/18f40da31eb445e1a915f51a2fc906c9/FLAGe3569e07a [2020-10-16 13:42:55,546 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:42:55,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-16 13:42:55,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f4451399/18f40da31eb445e1a915f51a2fc906c9/FLAGe3569e07a [2020-10-16 13:42:55,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f4451399/18f40da31eb445e1a915f51a2fc906c9 [2020-10-16 13:42:55,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:42:55,818 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:42:55,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:42:55,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:42:55,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:42:55,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:42:55" (1/1) ... [2020-10-16 13:42:55,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93fe9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:55, skipping insertion in model container [2020-10-16 13:42:55,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:42:55" (1/1) ... [2020-10-16 13:42:55,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:42:55,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:42:56,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:42:56,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:42:56,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:42:56,549 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:42:56,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56 WrapperNode [2020-10-16 13:42:56,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:42:56,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:42:56,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:42:56,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:42:56,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:42:56,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:42:56,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:42:56,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:42:56,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... [2020-10-16 13:42:56,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:42:56,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:42:56,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:42:56,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:42:56,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 13:42:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:42:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:42:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:42:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:42:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:42:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:42:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:42:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:42:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:42:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:42:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:42:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:42:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:42:56,714 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:42:57,122 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:42:57,122 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:42:57,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:42:57 BoogieIcfgContainer [2020-10-16 13:42:57,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:42:57,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:42:57,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:42:57,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:42:57,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:42:55" (1/3) ... [2020-10-16 13:42:57,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2dbf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:42:57, skipping insertion in model container [2020-10-16 13:42:57,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:56" (2/3) ... [2020-10-16 13:42:57,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2dbf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:42:57, skipping insertion in model container [2020-10-16 13:42:57,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:42:57" (3/3) ... [2020-10-16 13:42:57,134 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-10-16 13:42:57,146 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:42:57,147 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:42:57,154 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:42:57,155 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:42:57,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,186 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,187 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,187 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,203 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,205 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:42:57,208 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:42:57,223 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:42:57,246 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:42:57,246 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:42:57,246 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:42:57,246 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:42:57,247 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:42:57,247 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:42:57,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:42:57,247 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:42:57,261 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:42:57,262 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:42:57,265 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:42:57,267 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:42:57,312 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:42:57,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:42:57,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:42:57,320 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:42:58,825 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 13:42:58,825 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 13:42:58,832 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:42:58,860 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:42:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:42:58,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:42:58,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:42:58,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:42:58,872 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:42:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:42:58,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 13:42:58,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:42:58,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483361168] [2020-10-16 13:42:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:42:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:42:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:42:59,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483361168] [2020-10-16 13:42:59,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:42:59,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:42:59,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [994255269] [2020-10-16 13:42:59,106 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:42:59,110 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:42:59,125 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:42:59,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:42:59,129 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:42:59,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:42:59,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:42:59,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:42:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:42:59,148 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:42:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:42:59,198 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 13:42:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:42:59,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:42:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:42:59,226 INFO L225 Difference]: With dead ends: 282 [2020-10-16 13:42:59,226 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 13:42:59,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:42:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 13:42:59,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 13:42:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 13:42:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 13:42:59,296 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 13:42:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:42:59,297 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 13:42:59,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:42:59,298 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 13:42:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:42:59,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:42:59,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:42:59,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:42:59,300 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:42:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:42:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 1 times [2020-10-16 13:42:59,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:42:59,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247041665] [2020-10-16 13:42:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:42:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:42:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:42:59,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247041665] [2020-10-16 13:42:59,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:42:59,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:42:59,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [522938517] [2020-10-16 13:42:59,368 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:42:59,369 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:42:59,371 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-16 13:42:59,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:42:59,389 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:42:59,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:42:59,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:42:59,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:42:59,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:42:59,391 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 13:42:59,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:42:59,423 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-16 13:42:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:42:59,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:42:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:42:59,427 INFO L225 Difference]: With dead ends: 242 [2020-10-16 13:42:59,427 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 13:42:59,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:42:59,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 13:42:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 13:42:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 13:42:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-16 13:42:59,442 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-16 13:42:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:42:59,443 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-16 13:42:59,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:42:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-16 13:42:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:42:59,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:42:59,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:42:59,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:42:59,445 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:42:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:42:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-16 13:42:59,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:42:59,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919080244] [2020-10-16 13:42:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:42:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:42:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:42:59,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919080244] [2020-10-16 13:42:59,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:42:59,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:42:59,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [756359857] [2020-10-16 13:42:59,505 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:42:59,507 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:42:59,509 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-16 13:42:59,509 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:42:59,552 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:42:59,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:42:59,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:42:59,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:42:59,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:42:59,554 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-16 13:42:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:42:59,559 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-10-16 13:42:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:42:59,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 13:42:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:42:59,562 INFO L225 Difference]: With dead ends: 134 [2020-10-16 13:42:59,562 INFO L226 Difference]: Without dead ends: 134 [2020-10-16 13:42:59,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:42:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-16 13:42:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-16 13:42:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 13:42:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-10-16 13:42:59,574 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-10-16 13:42:59,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:42:59,575 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-10-16 13:42:59,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:42:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-10-16 13:42:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:42:59,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:42:59,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:42:59,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:42:59,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:42:59,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:42:59,578 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-10-16 13:42:59,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:42:59,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809416290] [2020-10-16 13:42:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:42:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:42:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:42:59,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809416290] [2020-10-16 13:42:59,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:42:59,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:42:59,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [70837603] [2020-10-16 13:42:59,696 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:42:59,698 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:42:59,706 INFO L258 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-10-16 13:42:59,707 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:42:59,747 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:42:59,786 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:42:59,842 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:42:59,875 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:42:59,901 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:42:59,941 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2347#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:42:59,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:42:59,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:42:59,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:42:59,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:42:59,942 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 5 states. [2020-10-16 13:43:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:43:00,004 INFO L93 Difference]: Finished difference Result 135 states and 308 transitions. [2020-10-16 13:43:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:43:00,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:43:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:43:00,006 INFO L225 Difference]: With dead ends: 135 [2020-10-16 13:43:00,006 INFO L226 Difference]: Without dead ends: 95 [2020-10-16 13:43:00,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:43:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-16 13:43:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-16 13:43:00,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-16 13:43:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 198 transitions. [2020-10-16 13:43:00,014 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 198 transitions. Word has length 13 [2020-10-16 13:43:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:43:00,014 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 198 transitions. [2020-10-16 13:43:00,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:43:00,015 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 198 transitions. [2020-10-16 13:43:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:43:00,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:43:00,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:43:00,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:43:00,017 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:43:00,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:43:00,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-10-16 13:43:00,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:43:00,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429782939] [2020-10-16 13:43:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:43:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:43:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:43:00,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429782939] [2020-10-16 13:43:00,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:43:00,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:43:00,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [596964500] [2020-10-16 13:43:00,082 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:43:00,084 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:43:00,091 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 84 transitions. [2020-10-16 13:43:00,092 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:43:00,099 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:43:00,243 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2683#(not (= 3 ~__unbuffered_cnt~0)), 2684#(not (= ~__unbuffered_cnt~0 2)), 2685#(not (= ~__unbuffered_cnt~0 1)), 2686#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:43:00,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 13:43:00,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:43:00,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 13:43:00,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-16 13:43:00,245 INFO L87 Difference]: Start difference. First operand 95 states and 198 transitions. Second operand 10 states. [2020-10-16 13:43:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:43:00,315 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-10-16 13:43:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:43:00,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-16 13:43:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:43:00,316 INFO L225 Difference]: With dead ends: 92 [2020-10-16 13:43:00,316 INFO L226 Difference]: Without dead ends: 84 [2020-10-16 13:43:00,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:43:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-16 13:43:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-16 13:43:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-16 13:43:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-10-16 13:43:00,322 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 15 [2020-10-16 13:43:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:43:00,322 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-10-16 13:43:00,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 13:43:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-10-16 13:43:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:43:00,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:43:00,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:43:00,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:43:00,325 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:43:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:43:00,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-16 13:43:00,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:43:00,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394590639] [2020-10-16 13:43:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:43:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:43:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:43:00,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394590639] [2020-10-16 13:43:00,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:43:00,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:43:00,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1282198729] [2020-10-16 13:43:00,380 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:43:00,382 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:43:00,390 INFO L258 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-10-16 13:43:00,391 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:43:00,441 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:43:00,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:43:00,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:43:00,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:43:00,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:43:00,443 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-10-16 13:43:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:43:00,466 INFO L93 Difference]: Finished difference Result 143 states and 291 transitions. [2020-10-16 13:43:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:43:00,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:43:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:43:00,467 INFO L225 Difference]: With dead ends: 143 [2020-10-16 13:43:00,467 INFO L226 Difference]: Without dead ends: 65 [2020-10-16 13:43:00,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:43:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-16 13:43:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-16 13:43:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-16 13:43:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 130 transitions. [2020-10-16 13:43:00,472 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 130 transitions. Word has length 17 [2020-10-16 13:43:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:43:00,472 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 130 transitions. [2020-10-16 13:43:00,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:43:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 130 transitions. [2020-10-16 13:43:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:43:00,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:43:00,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:43:00,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:43:00,474 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:43:00,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:43:00,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1083077880, now seen corresponding path program 2 times [2020-10-16 13:43:00,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:43:00,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534282314] [2020-10-16 13:43:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:43:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:43:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:43:00,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534282314] [2020-10-16 13:43:00,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:43:00,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:43:00,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [645737365] [2020-10-16 13:43:00,512 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:43:00,514 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:43:00,524 INFO L258 McrAutomatonBuilder]: Finished intersection with 62 states and 114 transitions. [2020-10-16 13:43:00,524 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:43:00,633 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:43:00,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:43:00,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:43:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:43:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:43:00,634 INFO L87 Difference]: Start difference. First operand 65 states and 130 transitions. Second operand 4 states. [2020-10-16 13:43:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:43:00,650 INFO L93 Difference]: Finished difference Result 64 states and 129 transitions. [2020-10-16 13:43:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:43:00,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:43:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:43:00,651 INFO L225 Difference]: With dead ends: 64 [2020-10-16 13:43:00,651 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:43:00,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:43:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:43:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:43:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:43:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:43:00,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:43:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:43:00,653 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:43:00,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:43:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:43:00,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:43:00,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:43:00,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:43:00 BasicIcfg [2020-10-16 13:43:00,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:43:00,660 INFO L168 Benchmark]: Toolchain (without parser) took 4841.10 ms. Allocated memory was 142.6 MB in the beginning and 275.3 MB in the end (delta: 132.6 MB). Free memory was 104.3 MB in the beginning and 233.3 MB in the end (delta: -129.1 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:43:00,661 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:43:00,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.73 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 104.1 MB in the beginning and 160.5 MB in the end (delta: -56.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:43:00,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.97 ms. Allocated memory is still 203.9 MB. Free memory was 160.5 MB in the beginning and 158.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:43:00,664 INFO L168 Benchmark]: Boogie Preprocessor took 28.17 ms. Allocated memory is still 203.9 MB. Free memory was 158.6 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:43:00,664 INFO L168 Benchmark]: RCFGBuilder took 497.79 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 134.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:43:00,665 INFO L168 Benchmark]: TraceAbstraction took 3531.34 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 134.1 MB in the beginning and 233.3 MB in the end (delta: -99.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:43:00,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.73 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 104.1 MB in the beginning and 160.5 MB in the end (delta: -56.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.97 ms. Allocated memory is still 203.9 MB. Free memory was 160.5 MB in the beginning and 158.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.17 ms. Allocated memory is still 203.9 MB. Free memory was 158.6 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.79 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 134.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3531.34 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 134.1 MB in the beginning and 233.3 MB in the end (delta: -99.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 678 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 31 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 130 SDtfs, 111 SDslu, 203 SDs, 0 SdLazy, 112 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...