/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/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:23:45,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:23:45,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:23:45,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:23:45,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:23:45,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:23:45,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:23:45,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:23:45,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:23:45,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:23:45,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:23:45,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:23:45,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:23:45,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:23:45,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:23:45,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:23:45,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:23:45,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:23:45,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:23:45,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:23:45,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:23:45,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:23:45,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:23:45,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:23:45,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 02:23:45,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:23:45,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:23:45,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:23:45,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:23:45,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:23:45,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:23:45,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:23:45,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:23:45,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:23:45,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:23:45,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:23:45,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:23:45,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:23:45,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:23:45,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:23:45,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:23:45,612 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:23:45,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:23:45,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:23:45,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:23:45,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:23:45,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:23:45,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:23:45,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:23:45,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:23:45,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:23:45,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:23:45,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:23:45,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:23:45,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:23:45,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:23:45,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:23:45,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:23:45,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:23:45,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:23:45,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:23:45,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:23:45,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:23:45,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:23:45,617 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:23:45,618 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:23:45,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:23:45,618 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:23:46,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:23:46,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:23:46,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:23:46,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:23:46,066 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:23:46,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-09-18 02:23:46,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f6187c9/4deba0819ef046b0b56eed38b3728ee0/FLAG8c9f19f5f [2020-09-18 02:23:46,759 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:23:46,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-09-18 02:23:46,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f6187c9/4deba0819ef046b0b56eed38b3728ee0/FLAG8c9f19f5f [2020-09-18 02:23:47,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f6187c9/4deba0819ef046b0b56eed38b3728ee0 [2020-09-18 02:23:47,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:23:47,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:23:47,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:23:47,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:23:47,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:23:47,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f3689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47, skipping insertion in model container [2020-09-18 02:23:47,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:23:47,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:23:47,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:23:47,671 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:23:47,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:23:47,832 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:23:47,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47 WrapperNode [2020-09-18 02:23:47,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:23:47,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:23:47,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:23:47,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:23:47,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:23:47,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:23:47,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:23:47,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:23:47,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... [2020-09-18 02:23:47,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:23:47,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:23:47,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:23:47,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:23:47,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:23:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:23:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:23:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:23:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:23:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:23:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:23:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:23:48,012 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:23:48,401 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:23:48,402 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:23:48,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:23:48 BoogieIcfgContainer [2020-09-18 02:23:48,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:23:48,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:23:48,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:23:48,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:23:48,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:23:47" (1/3) ... [2020-09-18 02:23:48,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f968bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:23:48, skipping insertion in model container [2020-09-18 02:23:48,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:47" (2/3) ... [2020-09-18 02:23:48,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f968bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:23:48, skipping insertion in model container [2020-09-18 02:23:48,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:23:48" (3/3) ... [2020-09-18 02:23:48,416 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-09-18 02:23:48,428 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:23:48,428 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:23:48,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:23:48,438 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:23:48,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,469 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,469 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,477 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,477 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,487 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,487 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,497 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,498 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:48,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 02:23:48,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:23:48,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:23:48,556 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:23:48,557 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:23:48,557 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:23:48,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:23:48,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:23:48,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:23:48,575 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:48,577 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:48,622 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:23:48,622 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:23:48,628 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 49 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. [2020-09-18 02:23:48,631 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:48,670 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:23:48,670 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:23:48,671 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 49 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. [2020-09-18 02:23:48,674 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 02:23:48,677 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:23:50,040 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 02:23:50,199 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-09-18 02:23:50,295 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-18 02:23:50,295 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-18 02:23:50,300 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-18 02:23:50,328 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 02:23:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 02:23:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:23:50,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:50,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:50,341 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:50,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-18 02:23:50,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:50,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414971001] [2020-09-18 02:23:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:50,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414971001] [2020-09-18 02:23:50,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:50,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:23:50,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1341708187] [2020-09-18 02:23:50,644 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:50,647 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:50,665 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:23:50,665 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:50,667 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:50,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:50,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:50,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:50,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:50,692 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 02:23:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:50,734 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-18 02:23:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:50,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:23:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:50,755 INFO L225 Difference]: With dead ends: 294 [2020-09-18 02:23:50,755 INFO L226 Difference]: Without dead ends: 230 [2020-09-18 02:23:50,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-18 02:23:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-18 02:23:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-18 02:23:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-18 02:23:50,833 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-18 02:23:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:50,834 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-18 02:23:50,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-18 02:23:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:23:50,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:50,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:50,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:23:50,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:50,837 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-18 02:23:50,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:50,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144236940] [2020-09-18 02:23:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:50,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144236940] [2020-09-18 02:23:50,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:50,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:23:50,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [27583025] [2020-09-18 02:23:50,919 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:50,920 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:50,923 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 02:23:50,923 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:50,967 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:50,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:50,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:50,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:50,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:50,970 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-18 02:23:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:50,979 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-18 02:23:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:50,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 02:23:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:50,982 INFO L225 Difference]: With dead ends: 202 [2020-09-18 02:23:50,983 INFO L226 Difference]: Without dead ends: 202 [2020-09-18 02:23:50,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-18 02:23:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-18 02:23:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-18 02:23:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-18 02:23:51,003 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-18 02:23:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:51,003 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-18 02:23:51,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-18 02:23:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 02:23:51,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:51,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:51,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:23:51,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:51,006 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-18 02:23:51,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:51,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310607453] [2020-09-18 02:23:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:51,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310607453] [2020-09-18 02:23:51,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:51,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:23:51,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1412936547] [2020-09-18 02:23:51,074 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:51,076 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:51,077 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-18 02:23:51,077 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:51,084 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:51,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:51,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:51,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:51,086 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-18 02:23:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:51,113 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-18 02:23:51,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:51,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 02:23:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:51,117 INFO L225 Difference]: With dead ends: 266 [2020-09-18 02:23:51,117 INFO L226 Difference]: Without dead ends: 140 [2020-09-18 02:23:51,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-18 02:23:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-18 02:23:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-18 02:23:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-18 02:23:51,142 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-18 02:23:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:51,143 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-18 02:23:51,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-18 02:23:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:23:51,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:51,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:51,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:23:51,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-18 02:23:51,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:51,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978945821] [2020-09-18 02:23:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:51,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978945821] [2020-09-18 02:23:51,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:51,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:23:51,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [605851223] [2020-09-18 02:23:51,270 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:51,271 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:51,273 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-18 02:23:51,273 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:51,279 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:51,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:51,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:51,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:51,281 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-18 02:23:51,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:51,319 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-18 02:23:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:23:51,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 02:23:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:51,321 INFO L225 Difference]: With dead ends: 165 [2020-09-18 02:23:51,322 INFO L226 Difference]: Without dead ends: 113 [2020-09-18 02:23:51,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-18 02:23:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-18 02:23:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-18 02:23:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-18 02:23:51,329 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-18 02:23:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:51,329 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-18 02:23:51,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-18 02:23:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:23:51,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:51,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:51,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:23:51,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:51,332 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-18 02:23:51,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:51,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532040801] [2020-09-18 02:23:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:51,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532040801] [2020-09-18 02:23:51,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:51,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:51,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [391967228] [2020-09-18 02:23:51,429 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:51,434 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:51,453 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-18 02:23:51,453 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:51,469 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2994#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:23:51,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:23:51,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:51,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:23:51,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:23:51,470 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-18 02:23:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:51,526 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-18 02:23:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:23:51,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-18 02:23:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:51,527 INFO L225 Difference]: With dead ends: 111 [2020-09-18 02:23:51,528 INFO L226 Difference]: Without dead ends: 80 [2020-09-18 02:23:51,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:23:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-18 02:23:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-18 02:23:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-18 02:23:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-18 02:23:51,532 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-18 02:23:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:51,533 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-18 02:23:51,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:23:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-18 02:23:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:23:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:51,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:51,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:23:51,535 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-18 02:23:51,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:51,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141602521] [2020-09-18 02:23:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:51,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141602521] [2020-09-18 02:23:51,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:51,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:23:51,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [115844278] [2020-09-18 02:23:51,620 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:51,622 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:51,625 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-18 02:23:51,625 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:51,639 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3274#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:23:51,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 02:23:51,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:51,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 02:23:51,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:23:51,640 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-18 02:23:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:51,694 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-18 02:23:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 02:23:51,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-18 02:23:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:51,696 INFO L225 Difference]: With dead ends: 75 [2020-09-18 02:23:51,696 INFO L226 Difference]: Without dead ends: 66 [2020-09-18 02:23:51,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:23:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-18 02:23:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-18 02:23:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-18 02:23:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-18 02:23:51,701 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-18 02:23:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:51,701 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-18 02:23:51,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 02:23:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-18 02:23:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:51,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:51,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:51,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:23:51,703 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-18 02:23:51,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:51,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580785097] [2020-09-18 02:23:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:51,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580785097] [2020-09-18 02:23:51,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:51,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:51,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [116657767] [2020-09-18 02:23:51,756 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:51,757 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:51,763 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-18 02:23:51,763 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:51,781 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:51,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:51,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:51,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:51,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:51,783 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-18 02:23:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:51,803 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-18 02:23:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:23:51,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:51,804 INFO L225 Difference]: With dead ends: 85 [2020-09-18 02:23:51,804 INFO L226 Difference]: Without dead ends: 48 [2020-09-18 02:23:51,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-18 02:23:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-18 02:23:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-18 02:23:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-18 02:23:51,807 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-18 02:23:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:51,808 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-18 02:23:51,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-18 02:23:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:51,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:51,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:51,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:23:51,810 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-18 02:23:51,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:51,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526287343] [2020-09-18 02:23:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:51,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526287343] [2020-09-18 02:23:51,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:51,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:51,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [209873434] [2020-09-18 02:23:51,866 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:51,867 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:51,872 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-18 02:23:51,872 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:51,895 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:51,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:51,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:51,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:51,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:51,897 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-18 02:23:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:51,920 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-18 02:23:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:23:51,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:51,922 INFO L225 Difference]: With dead ends: 73 [2020-09-18 02:23:51,922 INFO L226 Difference]: Without dead ends: 42 [2020-09-18 02:23:51,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-18 02:23:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-18 02:23:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-18 02:23:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-18 02:23:51,930 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-18 02:23:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:51,930 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-18 02:23:51,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-18 02:23:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:51,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:51,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:51,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 02:23:51,934 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-18 02:23:51,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:51,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547663886] [2020-09-18 02:23:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:52,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547663886] [2020-09-18 02:23:52,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:52,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:52,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1490588944] [2020-09-18 02:23:52,040 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:52,042 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:52,048 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-18 02:23:52,048 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:52,083 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:52,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:52,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:52,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:52,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:52,084 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-18 02:23:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:52,094 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-18 02:23:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:23:52,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:52,095 INFO L225 Difference]: With dead ends: 41 [2020-09-18 02:23:52,095 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:23:52,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:23:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:23:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:23:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:23:52,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 02:23:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:52,097 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:23:52,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:23:52,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:23:52,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 02:23:52,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:23:52 BasicIcfg [2020-09-18 02:23:52,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:23:52,106 INFO L168 Benchmark]: Toolchain (without parser) took 5070.08 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 100.7 MB in the beginning and 122.2 MB in the end (delta: -21.5 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:52,107 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 02:23:52,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.20 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 159.3 MB in the end (delta: -59.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:52,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.34 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:52,113 INFO L168 Benchmark]: Boogie Preprocessor took 29.09 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:52,114 INFO L168 Benchmark]: RCFGBuilder took 489.11 ms. Allocated memory is still 202.9 MB. Free memory was 155.3 MB in the beginning and 133.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:52,116 INFO L168 Benchmark]: TraceAbstraction took 3694.76 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 132.8 MB in the beginning and 122.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:52,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 793.20 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 159.3 MB in the end (delta: -59.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.34 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.09 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.11 ms. Allocated memory is still 202.9 MB. Free memory was 155.3 MB in the beginning and 133.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3694.76 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 132.8 MB in the beginning and 122.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 127 SDslu, 210 SDs, 0 SdLazy, 123 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...