/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:41:53,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:41:53,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:41:53,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:41:53,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:41:53,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:41:53,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:41:53,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:41:53,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:41:53,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:41:53,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:41:53,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:41:53,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:41:53,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:41:53,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:41:53,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:41:53,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:41:53,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:41:53,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:41:53,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:41:53,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:41:53,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:41:53,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:41:53,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:41:53,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:41:53,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:41:53,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:41:53,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:41:53,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:41:53,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:41:53,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:41:53,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:41:53,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:41:53,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:41:53,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:41:53,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:41:53,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:41:53,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:41:53,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:41:53,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:41:53,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:41:53,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:41:53,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:41:53,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:41:53,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:41:53,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:41:53,637 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:41:53,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:41:53,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:41:53,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:41:53,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:41:53,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:41:53,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:41:53,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:41:53,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:41:53,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:41:53,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:41:53,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:41:53,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:41:53,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:41:53,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:41:53,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:41:53,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:41:53,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:41:53,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:41:53,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:41:53,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:41:53,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:41:53,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:41:53,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:41:53,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:41:53,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:41:53,964 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:41:53,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:41:53,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:41:53,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:41:53,988 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:41:53,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-04-17 17:41:54,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8684aeea/fc5416ab391c4a1897088bc30ca91af6/FLAG8045fbe6e [2020-04-17 17:41:54,598 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:41:54,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-04-17 17:41:54,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8684aeea/fc5416ab391c4a1897088bc30ca91af6/FLAG8045fbe6e [2020-04-17 17:41:54,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8684aeea/fc5416ab391c4a1897088bc30ca91af6 [2020-04-17 17:41:54,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:41:54,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:41:54,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:41:54,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:41:54,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:41:54,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:41:54" (1/1) ... [2020-04-17 17:41:54,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297684a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:54, skipping insertion in model container [2020-04-17 17:41:54,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:41:54" (1/1) ... [2020-04-17 17:41:54,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:41:55,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:41:55,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:41:55,572 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:41:55,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:41:55,709 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:41:55,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55 WrapperNode [2020-04-17 17:41:55,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:41:55,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:41:55,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:41:55,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:41:55,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:41:55,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:41:55,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:41:55,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:41:55,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... [2020-04-17 17:41:55,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:41:55,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:41:55,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:41:55,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:41:55,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:41:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:41:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:41:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:41:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:41:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:41:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:41:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:41:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:41:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:41:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:41:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:41:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:41:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:41:55,863 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:41:56,270 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:41:56,271 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:41:56,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:41:56 BoogieIcfgContainer [2020-04-17 17:41:56,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:41:56,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:41:56,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:41:56,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:41:56,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:41:54" (1/3) ... [2020-04-17 17:41:56,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e30e663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:41:56, skipping insertion in model container [2020-04-17 17:41:56,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:55" (2/3) ... [2020-04-17 17:41:56,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e30e663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:41:56, skipping insertion in model container [2020-04-17 17:41:56,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:41:56" (3/3) ... [2020-04-17 17:41:56,293 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2020-04-17 17:41:56,303 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:41:56,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:41:56,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:41:56,314 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:41:56,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,340 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,341 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,341 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,342 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,342 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,342 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,343 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,343 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,343 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,344 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,344 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,345 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,345 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,345 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,349 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,350 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,350 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,356 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,356 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,357 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,357 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,360 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,360 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,360 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,360 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:56,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:41:56,405 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:41:56,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:41:56,405 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:41:56,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:41:56,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:41:56,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:41:56,407 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:41:56,407 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:41:56,421 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-17 17:41:56,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 17:41:56,468 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 17:41:56,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:41:56,473 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 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. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:41:56,476 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 17:41:56,497 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 17:41:56,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:41:56,498 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 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. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:41:56,500 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-17 17:41:56,501 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:41:57,943 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 17:41:58,248 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-17 17:41:58,249 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-17 17:41:58,252 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 17:41:58,274 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-17 17:41:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-17 17:41:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:41:58,284 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:58,285 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:58,285 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:58,291 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-17 17:41:58,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:58,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740048809] [2020-04-17 17:41:58,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:58,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740048809] [2020-04-17 17:41:58,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:58,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:41:58,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721909615] [2020-04-17 17:41:58,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:41:58,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:58,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:41:58,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:41:58,627 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-17 17:41:58,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:58,693 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2020-04-17 17:41:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:41:58,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 17:41:58,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:58,732 INFO L225 Difference]: With dead ends: 226 [2020-04-17 17:41:58,733 INFO L226 Difference]: Without dead ends: 178 [2020-04-17 17:41:58,735 INFO L678 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 [2020-04-17 17:41:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-17 17:41:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-17 17:41:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-17 17:41:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 474 transitions. [2020-04-17 17:41:58,820 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 474 transitions. Word has length 8 [2020-04-17 17:41:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:58,821 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 474 transitions. [2020-04-17 17:41:58,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:41:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 474 transitions. [2020-04-17 17:41:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:41:58,823 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:58,823 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:58,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 1 times [2020-04-17 17:41:58,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:58,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796083736] [2020-04-17 17:41:58,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:58,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796083736] [2020-04-17 17:41:58,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:58,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:41:58,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600620545] [2020-04-17 17:41:58,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:41:58,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:58,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:41:58,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:41:58,897 INFO L87 Difference]: Start difference. First operand 178 states and 474 transitions. Second operand 3 states. [2020-04-17 17:41:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:58,907 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-04-17 17:41:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:41:58,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 17:41:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:58,913 INFO L225 Difference]: With dead ends: 168 [2020-04-17 17:41:58,913 INFO L226 Difference]: Without dead ends: 168 [2020-04-17 17:41:58,914 INFO L678 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 [2020-04-17 17:41:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-04-17 17:41:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-04-17 17:41:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-04-17 17:41:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-04-17 17:41:58,937 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-04-17 17:41:58,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:58,937 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-04-17 17:41:58,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:41:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-04-17 17:41:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:41:58,939 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:58,939 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:58,939 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:58,940 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-04-17 17:41:58,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:58,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389444097] [2020-04-17 17:41:58,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:59,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389444097] [2020-04-17 17:41:59,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:59,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:41:59,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512277192] [2020-04-17 17:41:59,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:41:59,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:41:59,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:41:59,016 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 4 states. [2020-04-17 17:41:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:59,057 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-04-17 17:41:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:41:59,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 17:41:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:59,059 INFO L225 Difference]: With dead ends: 240 [2020-04-17 17:41:59,059 INFO L226 Difference]: Without dead ends: 138 [2020-04-17 17:41:59,060 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-17 17:41:59,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-17 17:41:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-17 17:41:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-04-17 17:41:59,072 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 10 [2020-04-17 17:41:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:59,072 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-04-17 17:41:59,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:41:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-04-17 17:41:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:41:59,074 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:59,074 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:59,074 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:59,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 2 times [2020-04-17 17:41:59,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:59,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255711870] [2020-04-17 17:41:59,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:59,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255711870] [2020-04-17 17:41:59,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:59,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:41:59,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674417652] [2020-04-17 17:41:59,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:41:59,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:59,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:41:59,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:41:59,132 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-04-17 17:41:59,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:59,138 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-04-17 17:41:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:41:59,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 17:41:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:59,140 INFO L225 Difference]: With dead ends: 132 [2020-04-17 17:41:59,140 INFO L226 Difference]: Without dead ends: 132 [2020-04-17 17:41:59,141 INFO L678 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 [2020-04-17 17:41:59,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-17 17:41:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-17 17:41:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-17 17:41:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-04-17 17:41:59,150 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-04-17 17:41:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:59,151 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-04-17 17:41:59,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:41:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-04-17 17:41:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:41:59,152 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:59,153 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:59,153 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-04-17 17:41:59,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:59,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061737429] [2020-04-17 17:41:59,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:59,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061737429] [2020-04-17 17:41:59,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:59,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:41:59,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085890676] [2020-04-17 17:41:59,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:41:59,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:59,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:41:59,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:41:59,238 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-04-17 17:41:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:59,258 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-04-17 17:41:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:41:59,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:41:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:59,260 INFO L225 Difference]: With dead ends: 144 [2020-04-17 17:41:59,260 INFO L226 Difference]: Without dead ends: 60 [2020-04-17 17:41:59,260 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-17 17:41:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-17 17:41:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-17 17:41:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-17 17:41:59,265 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-17 17:41:59,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:59,265 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-17 17:41:59,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:41:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-17 17:41:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:41:59,266 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:59,266 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:59,267 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-17 17:41:59,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:59,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358915827] [2020-04-17 17:41:59,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:59,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358915827] [2020-04-17 17:41:59,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:59,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:41:59,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889234012] [2020-04-17 17:41:59,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:41:59,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:59,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:41:59,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:41:59,379 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 4 states. [2020-04-17 17:41:59,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:59,426 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-17 17:41:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:41:59,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:41:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:59,428 INFO L225 Difference]: With dead ends: 73 [2020-04-17 17:41:59,428 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 17:41:59,428 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 17:41:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 17:41:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 17:41:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-17 17:41:59,431 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-17 17:41:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:59,431 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-17 17:41:59,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:41:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-17 17:41:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:41:59,433 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:59,433 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:59,434 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-17 17:41:59,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:59,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805138169] [2020-04-17 17:41:59,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:59,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805138169] [2020-04-17 17:41:59,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:59,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:41:59,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185853063] [2020-04-17 17:41:59,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:41:59,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:59,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:41:59,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:59,519 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 5 states. [2020-04-17 17:41:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:59,587 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-17 17:41:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:41:59,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 17:41:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:59,588 INFO L225 Difference]: With dead ends: 53 [2020-04-17 17:41:59,588 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 17:41:59,588 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:41:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 17:41:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 17:41:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 17:41:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-17 17:41:59,592 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-17 17:41:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:59,592 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-17 17:41:59,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:41:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-17 17:41:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:41:59,596 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:59,596 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:59,596 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-17 17:41:59,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:59,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981757357] [2020-04-17 17:41:59,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:59,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981757357] [2020-04-17 17:41:59,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:59,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:41:59,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537429555] [2020-04-17 17:41:59,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:41:59,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:59,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:41:59,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:41:59,702 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 6 states. [2020-04-17 17:41:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:59,762 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-17 17:41:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:41:59,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 17:41:59,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:59,763 INFO L225 Difference]: With dead ends: 35 [2020-04-17 17:41:59,763 INFO L226 Difference]: Without dead ends: 29 [2020-04-17 17:41:59,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:41:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-17 17:41:59,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-17 17:41:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-17 17:41:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-17 17:41:59,766 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-17 17:41:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:59,766 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-17 17:41:59,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:41:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-17 17:41:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 17:41:59,767 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:59,767 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:59,768 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-17 17:41:59,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:59,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565243987] [2020-04-17 17:41:59,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:59,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565243987] [2020-04-17 17:41:59,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:59,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:41:59,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984638226] [2020-04-17 17:41:59,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:41:59,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:41:59,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:41:59,812 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-04-17 17:41:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:59,821 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-17 17:41:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:41:59,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-17 17:41:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:59,822 INFO L225 Difference]: With dead ends: 28 [2020-04-17 17:41:59,822 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:41:59,822 INFO L678 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 [2020-04-17 17:41:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:41:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:41:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:41:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:41:59,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-17 17:41:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:59,824 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:41:59,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:41:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:41:59,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:41:59,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:41:59 BasicIcfg [2020-04-17 17:41:59,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:41:59,833 INFO L168 Benchmark]: Toolchain (without parser) took 4907.16 ms. Allocated memory was 136.8 MB in the beginning and 250.6 MB in the end (delta: 113.8 MB). Free memory was 99.8 MB in the beginning and 190.2 MB in the end (delta: -90.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:59,834 INFO L168 Benchmark]: CDTParser took 1.49 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 17:41:59,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.44 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.8 MB in the beginning and 156.9 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:59,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.80 ms. Allocated memory is still 200.3 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:59,842 INFO L168 Benchmark]: Boogie Preprocessor took 31.68 ms. Allocated memory is still 200.3 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:59,842 INFO L168 Benchmark]: RCFGBuilder took 482.35 ms. Allocated memory is still 200.3 MB. Free memory was 153.4 MB in the beginning and 131.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:59,844 INFO L168 Benchmark]: TraceAbstraction took 3548.17 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 130.6 MB in the beginning and 190.2 MB in the end (delta: -59.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 17:41:59,855 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.49 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 761.44 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.8 MB in the beginning and 156.9 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.80 ms. Allocated memory is still 200.3 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.68 ms. Allocated memory is still 200.3 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.35 ms. Allocated memory is still 200.3 MB. Free memory was 153.4 MB in the beginning and 131.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3548.17 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 130.6 MB in the beginning and 190.2 MB in the end (delta: -59.7 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: 1.8s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 144 SDtfs, 109 SDslu, 138 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3162 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...