/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:58:42,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:58:42,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:58:42,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:58:42,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:58:42,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:58:42,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:58:42,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:58:42,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:58:42,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:58:42,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:58:42,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:58:42,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:58:42,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:58:42,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:58:42,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:58:42,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:58:42,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:58:42,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:58:42,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:58:42,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:58:42,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:58:42,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:58:42,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:58:42,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 00:58:42,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:58:42,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:58:42,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:58:42,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:58:42,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:58:42,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:58:42,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:58:42,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:58:42,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:58:42,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:58:42,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:58:42,615 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 [2020-09-16 00:58:42,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:58:42,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:58:42,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:58:42,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:58:42,656 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:58:42,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:58:42,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:58:42,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:58:42,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:58:42,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:58:42,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:58:42,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:58:42,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:58:42,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:58:42,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:58:42,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:58:42,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:58:42,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:58:42,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:58:42,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:58:42,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:58:42,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:58:42,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:58:42,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:58:42,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:58:42,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:58:42,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:58:42,661 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:58:42,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:58:42,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:58:42,661 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:58:43,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:58:43,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:58:43,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:58:43,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:58:43,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:58:43,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-16 00:58:43,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9d3dc7d6/63e90a746003469fb1fe40b67e651ce0/FLAG13daf0f92 [2020-09-16 00:58:43,815 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:58:43,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-16 00:58:43,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9d3dc7d6/63e90a746003469fb1fe40b67e651ce0/FLAG13daf0f92 [2020-09-16 00:58:44,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9d3dc7d6/63e90a746003469fb1fe40b67e651ce0 [2020-09-16 00:58:44,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:58:44,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:58:44,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:58:44,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:58:44,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:58:44,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67abc2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44, skipping insertion in model container [2020-09-16 00:58:44,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:58:44,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:58:44,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:58:44,688 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:58:44,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:58:44,837 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:58:44,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44 WrapperNode [2020-09-16 00:58:44,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:58:44,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:58:44,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:58:44,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:58:44,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:58:44,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:58:44,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:58:44,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:58:44,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (1/1) ... [2020-09-16 00:58:44,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:58:44,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:58:44,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:58:44,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:58:44,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (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 [2020-09-16 00:58:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:58:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:58:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:58:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:58:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:58:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:58:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:58:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:58:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 00:58:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 00:58:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:58:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:58:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:58:45,022 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:58:45,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:58:45,377 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:58:45,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:58:45 BoogieIcfgContainer [2020-09-16 00:58:45,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:58:45,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:58:45,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:58:45,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:58:45,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:58:44" (1/3) ... [2020-09-16 00:58:45,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7670c35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:58:45, skipping insertion in model container [2020-09-16 00:58:45,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:58:44" (2/3) ... [2020-09-16 00:58:45,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7670c35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:58:45, skipping insertion in model container [2020-09-16 00:58:45,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:58:45" (3/3) ... [2020-09-16 00:58:45,393 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-09-16 00:58:45,404 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:58:45,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:58:45,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:58:45,414 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:58:45,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,453 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,453 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,477 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,477 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,478 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:58:45,511 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 00:58:45,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:58:45,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:58:45,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:58:45,540 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:58:45,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:58:45,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:58:45,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:58:45,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:58:45,560 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-16 00:58:45,563 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 00:58:45,617 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 00:58:45,617 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:58:45,624 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 00:58:45,627 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 00:58:45,650 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 00:58:45,650 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:58:45,651 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 00:58:45,653 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 00:58:45,655 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:58:46,885 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-09-16 00:58:46,885 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-09-16 00:58:46,891 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-16 00:58:46,929 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-16 00:58:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-16 00:58:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 00:58:46,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:46,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:46,946 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:46,954 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-09-16 00:58:46,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:46,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84932917] [2020-09-16 00:58:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:47,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84932917] [2020-09-16 00:58:47,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:47,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:58:47,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1628217675] [2020-09-16 00:58:47,218 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:47,221 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:47,239 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 00:58:47,240 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:47,242 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:58:47,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 00:58:47,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:47,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 00:58:47,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 00:58:47,265 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-16 00:58:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:47,292 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-16 00:58:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 00:58:47,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-16 00:58:47,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:47,315 INFO L225 Difference]: With dead ends: 362 [2020-09-16 00:58:47,316 INFO L226 Difference]: Without dead ends: 298 [2020-09-16 00:58:47,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 00:58:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-16 00:58:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-16 00:58:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-16 00:58:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-16 00:58:47,433 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-16 00:58:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:47,435 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-16 00:58:47,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 00:58:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-16 00:58:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:58:47,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:47,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:47,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:58:47,439 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:47,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-09-16 00:58:47,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:47,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056105112] [2020-09-16 00:58:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:47,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056105112] [2020-09-16 00:58:47,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:47,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:58:47,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1705751031] [2020-09-16 00:58:47,627 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:47,629 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:47,635 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-16 00:58:47,635 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:47,636 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:58:47,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:58:47,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:58:47,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:58:47,639 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-09-16 00:58:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:47,683 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-09-16 00:58:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:58:47,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 00:58:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:47,687 INFO L225 Difference]: With dead ends: 217 [2020-09-16 00:58:47,688 INFO L226 Difference]: Without dead ends: 217 [2020-09-16 00:58:47,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:58:47,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-16 00:58:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-09-16 00:58:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-16 00:58:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-09-16 00:58:47,721 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-09-16 00:58:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:47,722 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-09-16 00:58:47,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:58:47,722 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-09-16 00:58:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 00:58:47,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:47,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:47,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:58:47,724 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:47,725 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-09-16 00:58:47,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:47,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152672955] [2020-09-16 00:58:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:47,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152672955] [2020-09-16 00:58:47,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:47,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:58:47,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [156767185] [2020-09-16 00:58:47,797 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:47,798 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:47,800 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-16 00:58:47,800 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:47,868 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:58:47,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:58:47,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:47,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:58:47,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:58:47,870 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-09-16 00:58:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:47,895 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-09-16 00:58:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:58:47,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 00:58:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:47,897 INFO L225 Difference]: With dead ends: 136 [2020-09-16 00:58:47,898 INFO L226 Difference]: Without dead ends: 136 [2020-09-16 00:58:47,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:58:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-16 00:58:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-16 00:58:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-16 00:58:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-09-16 00:58:47,907 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-09-16 00:58:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:47,907 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-09-16 00:58:47,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:58:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-09-16 00:58:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 00:58:47,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:47,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:47,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:58:47,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:47,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-09-16 00:58:47,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:47,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972961180] [2020-09-16 00:58:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:47,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972961180] [2020-09-16 00:58:47,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:47,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:58:47,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [474087648] [2020-09-16 00:58:47,985 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:47,987 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:47,990 INFO L274 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-09-16 00:58:47,990 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:48,010 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2835#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 00:58:48,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 00:58:48,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 00:58:48,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 00:58:48,011 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-09-16 00:58:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:48,043 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-09-16 00:58:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:58:48,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-16 00:58:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:48,045 INFO L225 Difference]: With dead ends: 109 [2020-09-16 00:58:48,045 INFO L226 Difference]: Without dead ends: 109 [2020-09-16 00:58:48,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-16 00:58:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-16 00:58:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-16 00:58:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-16 00:58:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-09-16 00:58:48,052 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-09-16 00:58:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:48,052 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-09-16 00:58:48,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 00:58:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-09-16 00:58:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 00:58:48,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:48,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:48,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:58:48,055 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:48,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:48,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-09-16 00:58:48,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:48,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356279167] [2020-09-16 00:58:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:48,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356279167] [2020-09-16 00:58:48,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:48,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:58:48,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1552393246] [2020-09-16 00:58:48,182 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:48,184 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:48,192 INFO L274 McrAutomatonBuilder]: Finished intersection with 48 states and 75 transitions. [2020-09-16 00:58:48,193 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:48,227 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:58:48,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:58:48,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:48,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:58:48,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:58:48,229 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-09-16 00:58:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:48,286 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-09-16 00:58:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:58:48,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-16 00:58:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:48,288 INFO L225 Difference]: With dead ends: 174 [2020-09-16 00:58:48,288 INFO L226 Difference]: Without dead ends: 136 [2020-09-16 00:58:48,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:58:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-16 00:58:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-09-16 00:58:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-16 00:58:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-09-16 00:58:48,300 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-09-16 00:58:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:48,301 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-09-16 00:58:48,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:58:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-09-16 00:58:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 00:58:48,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:48,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:48,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 00:58:48,303 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-09-16 00:58:48,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:48,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353067681] [2020-09-16 00:58:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:48,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353067681] [2020-09-16 00:58:48,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:48,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:58:48,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [792799463] [2020-09-16 00:58:48,371 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:48,373 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:48,382 INFO L274 McrAutomatonBuilder]: Finished intersection with 54 states and 91 transitions. [2020-09-16 00:58:48,382 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:48,394 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:58:48,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:58:48,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:58:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:58:48,396 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 4 states. [2020-09-16 00:58:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:48,419 INFO L93 Difference]: Finished difference Result 135 states and 287 transitions. [2020-09-16 00:58:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:58:48,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-16 00:58:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:48,421 INFO L225 Difference]: With dead ends: 135 [2020-09-16 00:58:48,421 INFO L226 Difference]: Without dead ends: 55 [2020-09-16 00:58:48,422 INFO L675 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 [2020-09-16 00:58:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-16 00:58:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-16 00:58:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-16 00:58:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-09-16 00:58:48,425 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 18 [2020-09-16 00:58:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:48,425 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-09-16 00:58:48,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:58:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-09-16 00:58:48,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 00:58:48,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:48,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:48,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 00:58:48,427 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:48,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:48,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1837863529, now seen corresponding path program 3 times [2020-09-16 00:58:48,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:48,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476572387] [2020-09-16 00:58:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:48,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476572387] [2020-09-16 00:58:48,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:48,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:58:48,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [770289004] [2020-09-16 00:58:48,500 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:48,502 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:48,511 INFO L274 McrAutomatonBuilder]: Finished intersection with 55 states and 90 transitions. [2020-09-16 00:58:48,511 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:48,532 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:58:48,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:58:48,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:58:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:58:48,534 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 5 states. [2020-09-16 00:58:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:48,617 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2020-09-16 00:58:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:58:48,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-16 00:58:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:48,618 INFO L225 Difference]: With dead ends: 89 [2020-09-16 00:58:48,618 INFO L226 Difference]: Without dead ends: 42 [2020-09-16 00:58:48,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 00:58:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-16 00:58:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-16 00:58:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-16 00:58:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-16 00:58:48,621 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 18 [2020-09-16 00:58:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:48,622 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-16 00:58:48,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:58:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-16 00:58:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 00:58:48,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:58:48,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:58:48,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 00:58:48,623 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:58:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:58:48,624 INFO L82 PathProgramCache]: Analyzing trace with hash 784811111, now seen corresponding path program 4 times [2020-09-16 00:58:48,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:58:48,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941413351] [2020-09-16 00:58:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:58:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:58:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:58:48,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941413351] [2020-09-16 00:58:48,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:58:48,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:58:48,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1230514208] [2020-09-16 00:58:48,695 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:58:48,697 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:58:48,710 INFO L274 McrAutomatonBuilder]: Finished intersection with 68 states and 120 transitions. [2020-09-16 00:58:48,710 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:58:48,733 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:58:48,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:58:48,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:58:48,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:58:48,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:58:48,734 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 5 states. [2020-09-16 00:58:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:58:48,766 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-16 00:58:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:58:48,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-16 00:58:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:58:48,766 INFO L225 Difference]: With dead ends: 41 [2020-09-16 00:58:48,767 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:58:48,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:58:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:58:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:58:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:58:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:58:48,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-16 00:58:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:58:48,768 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:58:48,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:58:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:58:48,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:58:48,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 00:58:48,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:58:48 BasicIcfg [2020-09-16 00:58:48,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:58:48,778 INFO L168 Benchmark]: Toolchain (without parser) took 4676.09 ms. Allocated memory was 146.3 MB in the beginning and 249.6 MB in the end (delta: 103.3 MB). Free memory was 99.7 MB in the beginning and 185.5 MB in the end (delta: -85.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-16 00:58:48,779 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:58:48,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.93 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 99.0 MB in the beginning and 161.3 MB in the end (delta: -62.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-16 00:58:48,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.89 ms. Allocated memory is still 204.5 MB. Free memory was 160.6 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 00:58:48,781 INFO L168 Benchmark]: Boogie Preprocessor took 30.77 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 00:58:48,782 INFO L168 Benchmark]: RCFGBuilder took 454.46 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 135.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:58:48,783 INFO L168 Benchmark]: TraceAbstraction took 3390.09 ms. Allocated memory was 204.5 MB in the beginning and 249.6 MB in the end (delta: 45.1 MB). Free memory was 134.5 MB in the beginning and 185.5 MB in the end (delta: -51.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:58:48,787 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.93 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 99.0 MB in the beginning and 161.3 MB in the end (delta: -62.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.89 ms. Allocated memory is still 204.5 MB. Free memory was 160.6 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.77 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.46 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 135.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3390.09 ms. Allocated memory was 204.5 MB in the beginning and 249.6 MB in the end (delta: 45.1 MB). Free memory was 134.5 MB in the beginning and 185.5 MB in the end (delta: -51.0 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 LbeTime: 1.3s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 620 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 153 SDtfs, 86 SDslu, 254 SDs, 0 SdLazy, 90 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s 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, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...